mirror of
https://github.com/moodle/moodle.git
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4e4309064d
Added phpdocs and unittests, removed unnecessary fields such as course and userid because they can be retrieved from modinfo
2052 lines
73 KiB
PHP
2052 lines
73 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* modinfolib.php - Functions/classes relating to cached information about module instances on
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* a course.
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* @package core
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* @subpackage lib
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @author sam marshall
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*/
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// Maximum number of modinfo items to keep in memory cache. Do not increase this to a large
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// number because:
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// a) modinfo can be big (megabyte range) for some courses
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// b) performance of cache will deteriorate if there are very many items in it
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if (!defined('MAX_MODINFO_CACHE_SIZE')) {
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define('MAX_MODINFO_CACHE_SIZE', 10);
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}
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/**
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* Information about a course that is cached in the course table 'modinfo' field (and then in
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* memory) in order to reduce the need for other database queries.
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*
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* This includes information about the course-modules and the sections on the course. It can also
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* include dynamic data that has been updated for the current user.
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*/
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class course_modinfo extends stdClass {
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// For convenience we store the course object here as it is needed in other parts of code
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private $course;
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// Array of section data from cache
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private $sectioninfo;
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// Existing data fields
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///////////////////////
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// These are public for backward compatibility. Note: it is not possible to retain BC
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// using PHP magic get methods because behaviour is different with regard to empty().
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/**
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* Course ID
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* @var int
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* @deprecated For new code, use get_course_id instead.
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*/
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public $courseid;
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/**
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* User ID
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* @var int
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* @deprecated For new code, use get_user_id instead.
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*/
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public $userid;
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/**
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* Array from int (section num, e.g. 0) => array of int (course-module id); this list only
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* includes sections that actually contain at least one course-module
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* @var array
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* @deprecated For new code, use get_sections instead
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*/
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public $sections;
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/**
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* Array from int (cm id) => cm_info object
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* @var array
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* @deprecated For new code, use get_cms or get_cm instead.
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*/
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public $cms;
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/**
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* Array from string (modname) => int (instance id) => cm_info object
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* @var array
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* @deprecated For new code, use get_instances or get_instances_of instead.
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*/
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public $instances;
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/**
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* Groups that the current user belongs to. This value is usually not available (set to null)
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* unless the course has activities set to groupmembersonly. When set, it is an array of
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* grouping id => array of group id => group id. Includes grouping id 0 for 'all groups'.
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* @var array
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* @deprecated Don't use this! For new code, use get_groups.
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*/
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public $groups;
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// Get methods for data
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///////////////////////
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/**
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* @return object Moodle course object that was used to construct this data
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*/
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public function get_course() {
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return $this->course;
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}
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/**
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* @return int Course ID
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*/
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public function get_course_id() {
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return $this->courseid;
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}
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/**
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* @return int User ID
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*/
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public function get_user_id() {
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return $this->userid;
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}
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/**
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* @return array Array from section number (e.g. 0) to array of course-module IDs in that
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* section; this only includes sections that contain at least one course-module
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*/
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public function get_sections() {
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return $this->sections;
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}
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/**
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* @return array Array from course-module instance to cm_info object within this course, in
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* order of appearance
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*/
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public function get_cms() {
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return $this->cms;
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}
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/**
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* Obtains a single course-module object (for a course-module that is on this course).
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* @param int $cmid Course-module ID
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* @return cm_info Information about that course-module
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* @throws moodle_exception If the course-module does not exist
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*/
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public function get_cm($cmid) {
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if (empty($this->cms[$cmid])) {
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throw new moodle_exception('invalidcoursemodule', 'error');
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}
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return $this->cms[$cmid];
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}
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/**
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* Obtains all module instances on this course.
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* @return array Array from module name => array from instance id => cm_info
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*/
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public function get_instances() {
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return $this->instances;
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}
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/**
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* Returns array of localised human-readable module names used in this course
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*
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* @param bool $plural if true returns the plural form of modules names
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* @return array
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*/
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public function get_used_module_names($plural = false) {
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$modnames = get_module_types_names($plural);
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$modnamesused = array();
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foreach ($this->get_cms() as $cmid => $mod) {
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if (isset($modnames[$mod->modname]) && $mod->uservisible) {
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$modnamesused[$mod->modname] = $modnames[$mod->modname];
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}
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}
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core_collator::asort($modnamesused);
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return $modnamesused;
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}
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/**
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* Obtains all instances of a particular module on this course.
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* @param $modname Name of module (not full frankenstyle) e.g. 'label'
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* @return array Array from instance id => cm_info for modules on this course; empty if none
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*/
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public function get_instances_of($modname) {
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if (empty($this->instances[$modname])) {
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return array();
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}
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return $this->instances[$modname];
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}
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/**
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* Returns groups that the current user belongs to on the course. Note: If not already
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* available, this may make a database query.
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* @param int $groupingid Grouping ID or 0 (default) for all groups
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* @return array Array of int (group id) => int (same group id again); empty array if none
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*/
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public function get_groups($groupingid=0) {
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if (is_null($this->groups)) {
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// NOTE: Performance could be improved here. The system caches user groups
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// in $USER->groupmember[$courseid] => array of groupid=>groupid. Unfortunately this
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// structure does not include grouping information. It probably could be changed to
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// do so, without a significant performance hit on login, thus saving this one query
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// each request.
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$this->groups = groups_get_user_groups($this->courseid, $this->userid);
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}
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if (!isset($this->groups[$groupingid])) {
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return array();
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}
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return $this->groups[$groupingid];
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}
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/**
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* Gets all sections as array from section number => data about section.
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* @return array Array of section_info objects organised by section number
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*/
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public function get_section_info_all() {
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return $this->sectioninfo;
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}
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/**
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* Gets data about specific numbered section.
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* @param int $sectionnumber Number (not id) of section
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* @param int $strictness Use MUST_EXIST to throw exception if it doesn't
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* @return section_info Information for numbered section or null if not found
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*/
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public function get_section_info($sectionnumber, $strictness = IGNORE_MISSING) {
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if (!array_key_exists($sectionnumber, $this->sectioninfo)) {
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if ($strictness === MUST_EXIST) {
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throw new moodle_exception('sectionnotexist');
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} else {
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return null;
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}
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}
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return $this->sectioninfo[$sectionnumber];
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}
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/**
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* Constructs based on course.
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* Note: This constructor should not usually be called directly.
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* Use get_fast_modinfo($course) instead as this maintains a cache.
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* @param object $course Moodle course object, which may include modinfo
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* @param int $userid User ID
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*/
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public function __construct($course, $userid) {
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global $CFG, $DB, $COURSE, $SITE;
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if (!isset($course->modinfo) || !isset($course->sectioncache)) {
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$course = get_course($course->id, false);
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}
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// Check modinfo field is set. If not, build and load it.
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if (empty($course->modinfo) || empty($course->sectioncache)) {
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rebuild_course_cache($course->id);
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$course = $DB->get_record('course', array('id'=>$course->id), '*', MUST_EXIST);
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}
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// Set initial values
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$this->courseid = $course->id;
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$this->userid = $userid;
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$this->sections = array();
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$this->cms = array();
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$this->instances = array();
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$this->groups = null;
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$this->course = $course;
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// Load modinfo field into memory as PHP object and check it's valid
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$info = unserialize($course->modinfo);
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if (!is_array($info)) {
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// hmm, something is wrong - lets try to fix it
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rebuild_course_cache($course->id);
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$course->modinfo = $DB->get_field('course', 'modinfo', array('id'=>$course->id));
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$info = unserialize($course->modinfo);
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if (!is_array($info)) {
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// If it still fails, abort
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debugging('Problem with "modinfo" data for this course');
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return;
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}
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}
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// Load sectioncache field into memory as PHP object and check it's valid
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$sectioncache = unserialize($course->sectioncache);
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if (!is_array($sectioncache)) {
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// hmm, something is wrong - let's fix it
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rebuild_course_cache($course->id);
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$course->sectioncache = $DB->get_field('course', 'sectioncache', array('id'=>$course->id));
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$sectioncache = unserialize($course->sectioncache);
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if (!is_array($sectioncache)) {
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// If it still fails, abort
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debugging('Problem with "sectioncache" data for this course');
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return;
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}
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}
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// If we haven't already preloaded contexts for the course, do it now
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// Modules are also cached here as long as it's the first time this course has been preloaded.
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context_helper::preload_course($course->id);
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// Quick integrity check: as a result of race conditions modinfo may not be regenerated after the change.
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// It is especially dangerous if modinfo contains the deleted course module, as it results in fatal error.
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// We can check it very cheap by validating the existence of module context.
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if ($course->id == $COURSE->id || $course->id == $SITE->id) {
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// Only verify current course (or frontpage) as pages with many courses may not have module contexts cached.
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// (Uncached modules will result in a very slow verification).
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foreach ($info as $mod) {
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if (!context_module::instance($mod->cm, IGNORE_MISSING)) {
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debugging('Course cache integrity check failed: course module with id '. $mod->cm.
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' does not have context. Rebuilding cache for course '. $course->id);
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rebuild_course_cache($course->id);
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$this->course = $DB->get_record('course', array('id' => $course->id), '*', MUST_EXIST);
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$info = unserialize($this->course->modinfo);
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$sectioncache = unserialize($this->course->sectioncache);
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break;
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}
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}
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}
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// Loop through each piece of module data, constructing it
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$modexists = array();
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foreach ($info as $mod) {
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if (empty($mod->name)) {
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// something is wrong here
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continue;
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}
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// Skip modules which don't exist
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if (empty($modexists[$mod->mod])) {
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if (!file_exists("$CFG->dirroot/mod/$mod->mod/lib.php")) {
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continue;
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}
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$modexists[$mod->mod] = true;
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}
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// Construct info for this module
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$cm = new cm_info($this, $course, $mod, $info);
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// Store module in instances and cms array
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if (!isset($this->instances[$cm->modname])) {
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$this->instances[$cm->modname] = array();
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}
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$this->instances[$cm->modname][$cm->instance] = $cm;
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$this->cms[$cm->id] = $cm;
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// Reconstruct sections. This works because modules are stored in order
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if (!isset($this->sections[$cm->sectionnum])) {
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$this->sections[$cm->sectionnum] = array();
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}
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$this->sections[$cm->sectionnum][] = $cm->id;
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}
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// Expand section objects
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$this->sectioninfo = array();
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foreach ($sectioncache as $number => $data) {
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$this->sectioninfo[$number] = new section_info($data, $number, null, null,
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$this, null);
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}
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// We need at least 'dynamic' data from each course-module (this is basically the remaining
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// data which was always present in previous version of get_fast_modinfo, so it's required
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// for BC). Creating it in a second pass is necessary because obtain_dynamic_data sometimes
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// needs to be able to refer to a 'complete' (with basic data) modinfo.
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foreach ($this->cms as $cm) {
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$cm->obtain_dynamic_data();
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}
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}
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/**
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* Builds a list of information about sections on a course to be stored in
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* the course cache. (Does not include information that is already cached
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* in some other way.)
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*
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* Used internally by rebuild_course_cache function; do not use otherwise.
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* @param int $courseid Course ID
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* @return array Information about sections, indexed by section number (not id)
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*/
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public static function build_section_cache($courseid) {
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global $DB;
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// Get section data
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$sections = $DB->get_records('course_sections', array('course' => $courseid), 'section',
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'section, id, course, name, summary, summaryformat, sequence, visible, ' .
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'availablefrom, availableuntil, showavailability, groupingid');
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$compressedsections = array();
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$formatoptionsdef = course_get_format($courseid)->section_format_options();
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// Remove unnecessary data and add availability
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foreach ($sections as $number => $section) {
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// Add cached options from course format to $section object
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foreach ($formatoptionsdef as $key => $option) {
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if (!empty($option['cache'])) {
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$formatoptions = course_get_format($courseid)->get_format_options($section);
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if (!array_key_exists('cachedefault', $option) || $option['cachedefault'] !== $formatoptions[$key]) {
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$section->$key = $formatoptions[$key];
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}
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}
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}
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// Clone just in case it is reused elsewhere
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$compressedsections[$number] = clone($section);
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section_info::convert_for_section_cache($compressedsections[$number]);
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}
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return $compressedsections;
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}
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}
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/**
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* Data about a single module on a course. This contains most of the fields in the course_modules
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* table, plus additional data when required.
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*
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* This object has many public fields; code should treat all these fields as read-only and set
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* data only using the supplied set functions. Setting the fields directly is not supported
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* and may cause problems later.
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*/
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class cm_info extends stdClass {
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/**
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* State: Only basic data from modinfo cache is available.
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*/
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const STATE_BASIC = 0;
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/**
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* State: Dynamic data is available too.
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*/
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const STATE_DYNAMIC = 1;
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/**
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* State: View data (for course page) is available.
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*/
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const STATE_VIEW = 2;
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/**
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* Parent object
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* @var course_modinfo
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*/
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private $modinfo;
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/**
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* Level of information stored inside this object (STATE_xx constant)
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* @var int
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*/
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private $state;
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// Existing data fields
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///////////////////////
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/**
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* Course-module ID - from course_modules table
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* @var int
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*/
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public $id;
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/**
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* Module instance (ID within module table) - from course_modules table
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* @var int
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*/
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public $instance;
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/**
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* Course ID - from course_modules table
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* @var int
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*/
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public $course;
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/**
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* 'ID number' from course-modules table (arbitrary text set by user) - from
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* course_modules table
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* @var string
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*/
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public $idnumber;
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/**
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* Time that this course-module was added (unix time) - from course_modules table
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* @var int
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*/
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public $added;
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/**
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* This variable is not used and is included here only so it can be documented.
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* Once the database entry is removed from course_modules, it should be deleted
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* here too.
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* @var int
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* @deprecated Do not use this variable
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*/
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public $score;
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/**
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* Visible setting (0 or 1; if this is 0, students cannot see/access the activity) - from
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* course_modules table
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* @var int
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*/
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public $visible;
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/**
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* Old visible setting (if the entire section is hidden, the previous value for
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* visible is stored in this field) - from course_modules table
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* @var int
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*/
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public $visibleold;
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/**
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* Group mode (one of the constants NONE, SEPARATEGROUPS, or VISIBLEGROUPS) - from
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* course_modules table
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* @var int
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*/
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public $groupmode;
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/**
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* Grouping ID (0 = all groupings)
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* @var int
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*/
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public $groupingid;
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/**
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* Group members only (if set to 1, only members of a suitable group see this link on the
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* course page; 0 = everyone sees it even if they don't belong to a suitable group) - from
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* course_modules table
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* @var int
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*/
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public $groupmembersonly;
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/**
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* Indicates whether the course containing the module has forced the groupmode
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* This means that cm_info::$groupmode should be ignored and cm_info::$coursegroupmode be
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* used instead
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* @var bool
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*/
|
|
public $coursegroupmodeforce;
|
|
|
|
/**
|
|
* Group mode (one of the constants NONE, SEPARATEGROUPS, or VISIBLEGROUPS) - from
|
|
* course table - as specified for the course containing the module
|
|
* Effective only if cm_info::$coursegroupmodeforce is set
|
|
* @var int
|
|
*/
|
|
public $coursegroupmode;
|
|
|
|
/**
|
|
* Indent level on course page (0 = no indent) - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $indent;
|
|
|
|
/**
|
|
* Activity completion setting for this activity, COMPLETION_TRACKING_xx constant - from
|
|
* course_modules table
|
|
* @var int
|
|
*/
|
|
public $completion;
|
|
|
|
/**
|
|
* Set to the item number (usually 0) if completion depends on a particular
|
|
* grade of this activity, or null if completion does not depend on a grade - from
|
|
* course_modules table
|
|
* @var mixed
|
|
*/
|
|
public $completiongradeitemnumber;
|
|
|
|
/**
|
|
* 1 if 'on view' completion is enabled, 0 otherwise - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $completionview;
|
|
|
|
/**
|
|
* Set to a unix time if completion of this activity is expected at a
|
|
* particular time, 0 if no time set - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $completionexpected;
|
|
|
|
/**
|
|
* Available date for this activity (0 if not set, or set to seconds since epoch; before this
|
|
* date, activity does not display to students) - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $availablefrom;
|
|
|
|
/**
|
|
* Available until date for this activity (0 if not set, or set to seconds since epoch; from
|
|
* this date, activity does not display to students) - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $availableuntil;
|
|
|
|
/**
|
|
* When activity is unavailable, this field controls whether it is shown to students (0 =
|
|
* hide completely, 1 = show greyed out with information about when it will be available) -
|
|
* from course_modules table
|
|
* @var int
|
|
*/
|
|
public $showavailability;
|
|
|
|
/**
|
|
* Controls whether the description of the activity displays on the course main page (in
|
|
* addition to anywhere it might display within the activity itself). 0 = do not show
|
|
* on main page, 1 = show on main page.
|
|
* @var int
|
|
*/
|
|
public $showdescription;
|
|
|
|
/**
|
|
* Extra HTML that is put in an unhelpful part of the HTML when displaying this module in
|
|
* course page - from cached data in modinfo field
|
|
* @deprecated This is crazy, don't use it. Replaced by ->extraclasses and ->onclick
|
|
* @var string
|
|
*/
|
|
public $extra;
|
|
|
|
/**
|
|
* Name of icon to use - from cached data in modinfo field
|
|
* @var string
|
|
*/
|
|
public $icon;
|
|
|
|
/**
|
|
* Component that contains icon - from cached data in modinfo field
|
|
* @var string
|
|
*/
|
|
public $iconcomponent;
|
|
|
|
/**
|
|
* Name of module e.g. 'forum' (this is the same name as the module's main database
|
|
* table) - from cached data in modinfo field
|
|
* @var string
|
|
*/
|
|
public $modname;
|
|
|
|
/**
|
|
* ID of module - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $module;
|
|
|
|
/**
|
|
* Name of module instance for display on page e.g. 'General discussion forum' - from cached
|
|
* data in modinfo field
|
|
* @var string
|
|
*/
|
|
public $name;
|
|
|
|
/**
|
|
* Section number that this course-module is in (section 0 = above the calendar, section 1
|
|
* = week/topic 1, etc) - from cached data in modinfo field
|
|
* @var string
|
|
*/
|
|
public $sectionnum;
|
|
|
|
/**
|
|
* Section id - from course_modules table
|
|
* @var int
|
|
*/
|
|
public $section;
|
|
|
|
/**
|
|
* Availability conditions for this course-module based on the completion of other
|
|
* course-modules (array from other course-module id to required completion state for that
|
|
* module) - from cached data in modinfo field
|
|
* @var array
|
|
*/
|
|
public $conditionscompletion;
|
|
|
|
/**
|
|
* Availability conditions for this course-module based on course grades (array from
|
|
* grade item id to object with ->min, ->max fields) - from cached data in modinfo field
|
|
* @var array
|
|
*/
|
|
public $conditionsgrade;
|
|
|
|
/**
|
|
* Availability conditions for this course-module based on user fields
|
|
* @var array
|
|
*/
|
|
public $conditionsfield;
|
|
|
|
/**
|
|
* True if this course-module is available to students i.e. if all availability conditions
|
|
* are met - obtained dynamically
|
|
* @var bool
|
|
*/
|
|
public $available;
|
|
|
|
/**
|
|
* If course-module is not available to students, this string gives information about
|
|
* availability which can be displayed to students and/or staff (e.g. 'Available from 3
|
|
* January 2010') for display on main page - obtained dynamically
|
|
* @var string
|
|
*/
|
|
public $availableinfo;
|
|
|
|
/**
|
|
* True if this course-module is available to the CURRENT user (for example, if current user
|
|
* has viewhiddenactivities capability, they can access the course-module even if it is not
|
|
* visible or not available, so this would be true in that case)
|
|
* @var bool
|
|
*/
|
|
public $uservisible;
|
|
|
|
/**
|
|
* Module context - hacky shortcut
|
|
* @deprecated
|
|
* @var stdClass
|
|
*/
|
|
public $context;
|
|
|
|
|
|
// New data available only via functions
|
|
////////////////////////////////////////
|
|
|
|
/**
|
|
* @var moodle_url
|
|
*/
|
|
private $url;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $content;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $extraclasses;
|
|
|
|
/**
|
|
* @var moodle_url full external url pointing to icon image for activity
|
|
*/
|
|
private $iconurl;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $onclick;
|
|
|
|
/**
|
|
* @var mixed
|
|
*/
|
|
private $customdata;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $afterlink;
|
|
|
|
/**
|
|
* @var string
|
|
*/
|
|
private $afterediticons;
|
|
|
|
/**
|
|
* Magic method getter
|
|
*
|
|
* @param string $name
|
|
* @return mixed
|
|
*/
|
|
public function __get($name) {
|
|
switch ($name) {
|
|
case 'modplural':
|
|
return $this->get_module_type_name(true);
|
|
case 'modfullname':
|
|
return $this->get_module_type_name();
|
|
default:
|
|
debugging('Invalid cm_info property accessed: '.$name);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return bool True if this module has a 'view' page that should be linked to in navigation
|
|
* etc (note: modules may still have a view.php file, but return false if this is not
|
|
* intended to be linked to from 'normal' parts of the interface; this is what label does).
|
|
*/
|
|
public function has_view() {
|
|
return !is_null($this->url);
|
|
}
|
|
|
|
/**
|
|
* @return moodle_url URL to link to for this module, or null if it doesn't have a view page
|
|
*/
|
|
public function get_url() {
|
|
return $this->url;
|
|
}
|
|
|
|
/**
|
|
* Obtains content to display on main (view) page.
|
|
* Note: Will collect view data, if not already obtained.
|
|
* @return string Content to display on main page below link, or empty string if none
|
|
*/
|
|
public function get_content() {
|
|
$this->obtain_view_data();
|
|
return $this->content;
|
|
}
|
|
|
|
/**
|
|
* Returns the content to display on course/overview page, formatted and passed through filters
|
|
*
|
|
* if $options['context'] is not specified, the module context is used
|
|
*
|
|
* @param array|stdClass $options formatting options, see {@link format_text()}
|
|
* @return string
|
|
*/
|
|
public function get_formatted_content($options = array()) {
|
|
$this->obtain_view_data();
|
|
if (empty($this->content)) {
|
|
return '';
|
|
}
|
|
// Improve filter performance by preloading filter setttings for all
|
|
// activities on the course (this does nothing if called multiple
|
|
// times)
|
|
filter_preload_activities($this->get_modinfo());
|
|
|
|
$options = (array)$options;
|
|
if (!isset($options['context'])) {
|
|
$options['context'] = context_module::instance($this->id);
|
|
}
|
|
return format_text($this->content, FORMAT_HTML, $options);
|
|
}
|
|
|
|
/**
|
|
* Returns the name to display on course/overview page, formatted and passed through filters
|
|
*
|
|
* if $options['context'] is not specified, the module context is used
|
|
*
|
|
* @param array|stdClass $options formatting options, see {@link format_string()}
|
|
* @return string
|
|
*/
|
|
public function get_formatted_name($options = array()) {
|
|
$options = (array)$options;
|
|
if (!isset($options['context'])) {
|
|
$options['context'] = context_module::instance($this->id);
|
|
}
|
|
return format_string($this->name, true, $options);
|
|
}
|
|
|
|
/**
|
|
* Note: Will collect view data, if not already obtained.
|
|
* @return string Extra CSS classes to add to html output for this activity on main page
|
|
*/
|
|
public function get_extra_classes() {
|
|
$this->obtain_view_data();
|
|
return $this->extraclasses;
|
|
}
|
|
|
|
/**
|
|
* @return string Content of HTML on-click attribute. This string will be used literally
|
|
* as a string so should be pre-escaped.
|
|
*/
|
|
public function get_on_click() {
|
|
// Does not need view data; may be used by navigation
|
|
return $this->onclick;
|
|
}
|
|
/**
|
|
* @return mixed Optional custom data stored in modinfo cache for this activity, or null if none
|
|
*/
|
|
public function get_custom_data() {
|
|
return $this->customdata;
|
|
}
|
|
|
|
/**
|
|
* Note: Will collect view data, if not already obtained.
|
|
* @return string Extra HTML code to display after link
|
|
*/
|
|
public function get_after_link() {
|
|
$this->obtain_view_data();
|
|
return $this->afterlink;
|
|
}
|
|
|
|
/**
|
|
* Note: Will collect view data, if not already obtained.
|
|
* @return string Extra HTML code to display after editing icons (e.g. more icons)
|
|
*/
|
|
public function get_after_edit_icons() {
|
|
$this->obtain_view_data();
|
|
return $this->afterediticons;
|
|
}
|
|
|
|
/**
|
|
* @param moodle_core_renderer $output Output render to use, or null for default (global)
|
|
* @return moodle_url Icon URL for a suitable icon to put beside this cm
|
|
*/
|
|
public function get_icon_url($output = null) {
|
|
global $OUTPUT;
|
|
if (!$output) {
|
|
$output = $OUTPUT;
|
|
}
|
|
// Support modules setting their own, external, icon image
|
|
if (!empty($this->iconurl)) {
|
|
$icon = $this->iconurl;
|
|
|
|
// Fallback to normal local icon + component procesing
|
|
} else if (!empty($this->icon)) {
|
|
if (substr($this->icon, 0, 4) === 'mod/') {
|
|
list($modname, $iconname) = explode('/', substr($this->icon, 4), 2);
|
|
$icon = $output->pix_url($iconname, $modname);
|
|
} else {
|
|
if (!empty($this->iconcomponent)) {
|
|
// Icon has specified component
|
|
$icon = $output->pix_url($this->icon, $this->iconcomponent);
|
|
} else {
|
|
// Icon does not have specified component, use default
|
|
$icon = $output->pix_url($this->icon);
|
|
}
|
|
}
|
|
} else {
|
|
$icon = $output->pix_url('icon', $this->modname);
|
|
}
|
|
return $icon;
|
|
}
|
|
|
|
/**
|
|
* Returns a localised human-readable name of the module type
|
|
*
|
|
* @param bool $plural return plural form
|
|
* @return string
|
|
*/
|
|
public function get_module_type_name($plural = false) {
|
|
$modnames = get_module_types_names($plural);
|
|
if (isset($modnames[$this->modname])) {
|
|
return $modnames[$this->modname];
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return course_modinfo Modinfo object that this came from
|
|
*/
|
|
public function get_modinfo() {
|
|
return $this->modinfo;
|
|
}
|
|
|
|
/**
|
|
* @return object Moodle course object that was used to construct this data
|
|
*/
|
|
public function get_course() {
|
|
return $this->modinfo->get_course();
|
|
}
|
|
|
|
// Set functions
|
|
////////////////
|
|
|
|
/**
|
|
* Sets content to display on course view page below link (if present).
|
|
* @param string $content New content as HTML string (empty string if none)
|
|
* @return void
|
|
*/
|
|
public function set_content($content) {
|
|
$this->content = $content;
|
|
}
|
|
|
|
/**
|
|
* Sets extra classes to include in CSS.
|
|
* @param string $extraclasses Extra classes (empty string if none)
|
|
* @return void
|
|
*/
|
|
public function set_extra_classes($extraclasses) {
|
|
$this->extraclasses = $extraclasses;
|
|
}
|
|
|
|
/**
|
|
* Sets the external full url that points to the icon being used
|
|
* by the activity. Useful for external-tool modules (lti...)
|
|
* If set, takes precedence over $icon and $iconcomponent
|
|
*
|
|
* @param moodle_url $iconurl full external url pointing to icon image for activity
|
|
* @return void
|
|
*/
|
|
public function set_icon_url(moodle_url $iconurl) {
|
|
$this->iconurl = $iconurl;
|
|
}
|
|
|
|
/**
|
|
* Sets value of on-click attribute for JavaScript.
|
|
* Note: May not be called from _cm_info_view (only _cm_info_dynamic).
|
|
* @param string $onclick New onclick attribute which should be HTML-escaped
|
|
* (empty string if none)
|
|
* @return void
|
|
*/
|
|
public function set_on_click($onclick) {
|
|
$this->check_not_view_only();
|
|
$this->onclick = $onclick;
|
|
}
|
|
|
|
/**
|
|
* Sets HTML that displays after link on course view page.
|
|
* @param string $afterlink HTML string (empty string if none)
|
|
* @return void
|
|
*/
|
|
public function set_after_link($afterlink) {
|
|
$this->afterlink = $afterlink;
|
|
}
|
|
|
|
/**
|
|
* Sets HTML that displays after edit icons on course view page.
|
|
* @param string $afterediticons HTML string (empty string if none)
|
|
* @return void
|
|
*/
|
|
public function set_after_edit_icons($afterediticons) {
|
|
$this->afterediticons = $afterediticons;
|
|
}
|
|
|
|
/**
|
|
* Changes the name (text of link) for this module instance.
|
|
* Note: May not be called from _cm_info_view (only _cm_info_dynamic).
|
|
* @param string $name Name of activity / link text
|
|
* @return void
|
|
*/
|
|
public function set_name($name) {
|
|
$this->update_user_visible();
|
|
$this->name = $name;
|
|
}
|
|
|
|
/**
|
|
* Turns off the view link for this module instance.
|
|
* Note: May not be called from _cm_info_view (only _cm_info_dynamic).
|
|
* @return void
|
|
*/
|
|
public function set_no_view_link() {
|
|
$this->check_not_view_only();
|
|
$this->url = null;
|
|
}
|
|
|
|
/**
|
|
* Sets the 'uservisible' flag. This can be used (by setting false) to prevent access and
|
|
* display of this module link for the current user.
|
|
* Note: May not be called from _cm_info_view (only _cm_info_dynamic).
|
|
* @param bool $uservisible
|
|
* @return void
|
|
*/
|
|
public function set_user_visible($uservisible) {
|
|
$this->check_not_view_only();
|
|
$this->uservisible = $uservisible;
|
|
}
|
|
|
|
/**
|
|
* Sets the 'available' flag and related details. This flag is normally used to make
|
|
* course modules unavailable until a certain date or condition is met. (When a course
|
|
* module is unavailable, it is still visible to users who have viewhiddenactivities
|
|
* permission.)
|
|
*
|
|
* When this is function is called, user-visible status is recalculated automatically.
|
|
*
|
|
* Note: May not be called from _cm_info_view (only _cm_info_dynamic).
|
|
* @param bool $available False if this item is not 'available'
|
|
* @param int $showavailability 0 = do not show this item at all if it's not available,
|
|
* 1 = show this item greyed out with the following message
|
|
* @param string $availableinfo Information about why this is not available which displays
|
|
* to those who have viewhiddenactivities, and to everyone if showavailability is set;
|
|
* note that this function replaces the existing data (if any)
|
|
* @return void
|
|
*/
|
|
public function set_available($available, $showavailability=0, $availableinfo='') {
|
|
$this->check_not_view_only();
|
|
$this->available = $available;
|
|
$this->showavailability = $showavailability;
|
|
$this->availableinfo = $availableinfo;
|
|
$this->update_user_visible();
|
|
}
|
|
|
|
/**
|
|
* Some set functions can only be called from _cm_info_dynamic and not _cm_info_view.
|
|
* This is because they may affect parts of this object which are used on pages other
|
|
* than the view page (e.g. in the navigation block, or when checking access on
|
|
* module pages).
|
|
* @return void
|
|
*/
|
|
private function check_not_view_only() {
|
|
if ($this->state >= self::STATE_DYNAMIC) {
|
|
throw new coding_exception('Cannot set this data from _cm_info_view because it may ' .
|
|
'affect other pages as well as view');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Constructor should not be called directly; use get_fast_modinfo.
|
|
* @param course_modinfo $modinfo Parent object
|
|
* @param object $course Course row
|
|
* @param object $mod Module object from the modinfo field of course table
|
|
* @param object $info Entire object from modinfo field of course table
|
|
*/
|
|
public function __construct(course_modinfo $modinfo, $course, $mod, $info) {
|
|
global $CFG;
|
|
$this->modinfo = $modinfo;
|
|
|
|
$this->id = $mod->cm;
|
|
$this->instance = $mod->id;
|
|
$this->course = $course->id;
|
|
$this->modname = $mod->mod;
|
|
$this->idnumber = isset($mod->idnumber) ? $mod->idnumber : '';
|
|
$this->name = $mod->name;
|
|
$this->visible = $mod->visible;
|
|
$this->sectionnum = $mod->section; // Note weirdness with name here
|
|
$this->groupmode = isset($mod->groupmode) ? $mod->groupmode : 0;
|
|
$this->groupingid = isset($mod->groupingid) ? $mod->groupingid : 0;
|
|
$this->groupmembersonly = isset($mod->groupmembersonly) ? $mod->groupmembersonly : 0;
|
|
$this->coursegroupmodeforce = $course->groupmodeforce;
|
|
$this->coursegroupmode = $course->groupmode;
|
|
$this->indent = isset($mod->indent) ? $mod->indent : 0;
|
|
$this->extra = isset($mod->extra) ? $mod->extra : '';
|
|
$this->extraclasses = isset($mod->extraclasses) ? $mod->extraclasses : '';
|
|
// iconurl may be stored as either string or instance of moodle_url.
|
|
$this->iconurl = isset($mod->iconurl) ? new moodle_url($mod->iconurl) : '';
|
|
$this->onclick = isset($mod->onclick) ? $mod->onclick : '';
|
|
$this->content = isset($mod->content) ? $mod->content : '';
|
|
$this->icon = isset($mod->icon) ? $mod->icon : '';
|
|
$this->iconcomponent = isset($mod->iconcomponent) ? $mod->iconcomponent : '';
|
|
$this->customdata = isset($mod->customdata) ? $mod->customdata : '';
|
|
$this->context = context_module::instance($mod->cm);
|
|
$this->showdescription = isset($mod->showdescription) ? $mod->showdescription : 0;
|
|
$this->state = self::STATE_BASIC;
|
|
|
|
// Note: These fields from $cm were not present in cm_info in Moodle
|
|
// 2.0.2 and prior. They may not be available if course cache hasn't
|
|
// been rebuilt since then.
|
|
$this->section = isset($mod->sectionid) ? $mod->sectionid : 0;
|
|
$this->module = isset($mod->module) ? $mod->module : 0;
|
|
$this->added = isset($mod->added) ? $mod->added : 0;
|
|
$this->score = isset($mod->score) ? $mod->score : 0;
|
|
$this->visibleold = isset($mod->visibleold) ? $mod->visibleold : 0;
|
|
|
|
// Note: it saves effort and database space to always include the
|
|
// availability and completion fields, even if availability or completion
|
|
// are actually disabled
|
|
$this->completion = isset($mod->completion) ? $mod->completion : 0;
|
|
$this->completiongradeitemnumber = isset($mod->completiongradeitemnumber)
|
|
? $mod->completiongradeitemnumber : null;
|
|
$this->completionview = isset($mod->completionview)
|
|
? $mod->completionview : 0;
|
|
$this->completionexpected = isset($mod->completionexpected)
|
|
? $mod->completionexpected : 0;
|
|
$this->showavailability = isset($mod->showavailability) ? $mod->showavailability : 0;
|
|
$this->availablefrom = isset($mod->availablefrom) ? $mod->availablefrom : 0;
|
|
$this->availableuntil = isset($mod->availableuntil) ? $mod->availableuntil : 0;
|
|
$this->conditionscompletion = isset($mod->conditionscompletion)
|
|
? $mod->conditionscompletion : array();
|
|
$this->conditionsgrade = isset($mod->conditionsgrade)
|
|
? $mod->conditionsgrade : array();
|
|
$this->conditionsfield = isset($mod->conditionsfield)
|
|
? $mod->conditionsfield : array();
|
|
|
|
static $modviews;
|
|
if (!isset($modviews[$this->modname])) {
|
|
$modviews[$this->modname] = !plugin_supports('mod', $this->modname,
|
|
FEATURE_NO_VIEW_LINK);
|
|
}
|
|
$this->url = $modviews[$this->modname]
|
|
? new moodle_url('/mod/' . $this->modname . '/view.php', array('id'=>$this->id))
|
|
: null;
|
|
}
|
|
|
|
/**
|
|
* If dynamic data for this course-module is not yet available, gets it.
|
|
*
|
|
* This function is automatically called when constructing course_modinfo, so users don't
|
|
* need to call it.
|
|
*
|
|
* Dynamic data is data which does not come directly from the cache but is calculated at
|
|
* runtime based on the current user. Primarily this concerns whether the user can access
|
|
* the module or not.
|
|
*
|
|
* As part of this function, the module's _cm_info_dynamic function from its lib.php will
|
|
* be called (if it exists).
|
|
* @return void
|
|
*/
|
|
public function obtain_dynamic_data() {
|
|
global $CFG;
|
|
if ($this->state >= self::STATE_DYNAMIC) {
|
|
return;
|
|
}
|
|
$userid = $this->modinfo->get_user_id();
|
|
|
|
if (!empty($CFG->enableavailability)) {
|
|
require_once($CFG->libdir. '/conditionlib.php');
|
|
// Get availability information
|
|
$ci = new condition_info($this);
|
|
// Note that the modinfo currently available only includes minimal details (basic data)
|
|
// so passing it to this function is a bit dangerous as it would cause infinite
|
|
// recursion if it tried to get dynamic data, however we know that this function only
|
|
// uses basic data.
|
|
$this->available = $ci->is_available($this->availableinfo, true,
|
|
$userid, $this->modinfo);
|
|
|
|
// Check parent section
|
|
$parentsection = $this->modinfo->get_section_info($this->sectionnum);
|
|
if (!$parentsection->available) {
|
|
// Do not store info from section here, as that is already
|
|
// presented from the section (if appropriate) - just change
|
|
// the flag
|
|
$this->available = false;
|
|
}
|
|
} else {
|
|
$this->available = true;
|
|
}
|
|
|
|
// Update visible state for current user
|
|
$this->update_user_visible();
|
|
|
|
// Let module make dynamic changes at this point
|
|
$this->call_mod_function('cm_info_dynamic');
|
|
$this->state = self::STATE_DYNAMIC;
|
|
}
|
|
|
|
/**
|
|
* Works out whether activity is available to the current user
|
|
*
|
|
* If the activity is unavailable, additional checks are required to determine if its hidden or greyed out
|
|
*
|
|
* @see is_user_access_restricted_by_group()
|
|
* @see is_user_access_restricted_by_conditional_access()
|
|
* @return void
|
|
*/
|
|
private function update_user_visible() {
|
|
global $CFG;
|
|
$modcontext = context_module::instance($this->id);
|
|
$userid = $this->modinfo->get_user_id();
|
|
$this->uservisible = true;
|
|
|
|
// If the user cannot access the activity set the uservisible flag to false.
|
|
// Additional checks are required to determine whether the activity is entirely hidden or just greyed out.
|
|
if ((!$this->visible or !$this->available) and
|
|
!has_capability('moodle/course:viewhiddenactivities', $modcontext, $userid)) {
|
|
|
|
$this->uservisible = false;
|
|
}
|
|
|
|
// Check group membership.
|
|
if ($this->is_user_access_restricted_by_group() ||
|
|
$this->is_user_access_restricted_by_capability()) {
|
|
|
|
$this->uservisible = false;
|
|
// Ensure activity is completely hidden from the user.
|
|
$this->showavailability = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks whether the module's group settings restrict the current user's access
|
|
*
|
|
* @return bool True if the user access is restricted
|
|
*/
|
|
public function is_user_access_restricted_by_group() {
|
|
global $CFG;
|
|
|
|
if (!empty($CFG->enablegroupmembersonly) and !empty($this->groupmembersonly)) {
|
|
$modcontext = context_module::instance($this->id);
|
|
$userid = $this->modinfo->get_user_id();
|
|
if (!has_capability('moodle/site:accessallgroups', $modcontext, $userid)) {
|
|
// If the activity has 'group members only' and you don't have accessallgroups...
|
|
$groups = $this->modinfo->get_groups($this->groupingid);
|
|
if (empty($groups)) {
|
|
// ...and you don't belong to a group, then set it so you can't see/access it
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks whether mod/...:view capability restricts the current user's access.
|
|
*
|
|
* @return bool True if the user access is restricted.
|
|
*/
|
|
public function is_user_access_restricted_by_capability() {
|
|
$capability = 'mod/' . $this->modname . ':view';
|
|
$capabilityinfo = get_capability_info($capability);
|
|
if (!$capabilityinfo) {
|
|
// Capability does not exist, no one is prevented from seeing the activity.
|
|
return false;
|
|
}
|
|
|
|
// You are blocked if you don't have the capability.
|
|
$userid = $this->modinfo->get_user_id();
|
|
return !has_capability($capability, context_module::instance($this->id), $userid);
|
|
}
|
|
|
|
/**
|
|
* Checks whether the module's conditional access settings mean that the user cannot see the activity at all
|
|
*
|
|
* @return bool True if the user cannot see the module. False if the activity is either available or should be greyed out.
|
|
*/
|
|
public function is_user_access_restricted_by_conditional_access() {
|
|
global $CFG;
|
|
|
|
if (empty($CFG->enableavailability)) {
|
|
return false;
|
|
}
|
|
|
|
require_once($CFG->libdir. '/conditionlib.php');
|
|
|
|
// If module will always be visible anyway (but greyed out), don't bother checking anything else
|
|
if ($this->showavailability == CONDITION_STUDENTVIEW_SHOW) {
|
|
return false;
|
|
}
|
|
|
|
// Can the user see hidden modules?
|
|
$modcontext = context_module::instance($this->id);
|
|
$userid = $this->modinfo->get_user_id();
|
|
if (has_capability('moodle/course:viewhiddenactivities', $modcontext, $userid)) {
|
|
return false;
|
|
}
|
|
|
|
// Is the module hidden due to unmet conditions?
|
|
if (!$this->available) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Calls a module function (if exists), passing in one parameter: this object.
|
|
* @param string $type Name of function e.g. if this is 'grooblezorb' and the modname is
|
|
* 'forum' then it will try to call 'mod_forum_grooblezorb' or 'forum_grooblezorb'
|
|
* @return void
|
|
*/
|
|
private function call_mod_function($type) {
|
|
global $CFG;
|
|
$libfile = $CFG->dirroot . '/mod/' . $this->modname . '/lib.php';
|
|
if (file_exists($libfile)) {
|
|
include_once($libfile);
|
|
$function = 'mod_' . $this->modname . '_' . $type;
|
|
if (function_exists($function)) {
|
|
$function($this);
|
|
} else {
|
|
$function = $this->modname . '_' . $type;
|
|
if (function_exists($function)) {
|
|
$function($this);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* If view data for this course-module is not yet available, obtains it.
|
|
*
|
|
* This function is automatically called if any of the functions (marked) which require
|
|
* view data are called.
|
|
*
|
|
* View data is data which is needed only for displaying the course main page (& any similar
|
|
* functionality on other pages) but is not needed in general. Obtaining view data may have
|
|
* a performance cost.
|
|
*
|
|
* As part of this function, the module's _cm_info_view function from its lib.php will
|
|
* be called (if it exists).
|
|
* @return void
|
|
*/
|
|
private function obtain_view_data() {
|
|
if ($this->state >= self::STATE_VIEW) {
|
|
return;
|
|
}
|
|
|
|
// Let module make changes at this point
|
|
$this->call_mod_function('cm_info_view');
|
|
$this->state = self::STATE_VIEW;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns reference to full info about modules in course (including visibility).
|
|
* Cached and as fast as possible (0 or 1 db query).
|
|
*
|
|
* use get_fast_modinfo($courseid, 0, true) to reset the static cache for particular course
|
|
* use get_fast_modinfo(0, 0, true) to reset the static cache for all courses
|
|
*
|
|
* @uses MAX_MODINFO_CACHE_SIZE
|
|
* @param int|stdClass $courseorid object from DB table 'course' or just a course id
|
|
* @param int $userid User id to populate 'uservisible' attributes of modules and sections.
|
|
* Set to 0 for current user (default)
|
|
* @param bool $resetonly whether we want to get modinfo or just reset the cache
|
|
* @return course_modinfo|null Module information for course, or null if resetting
|
|
*/
|
|
function get_fast_modinfo($courseorid, $userid = 0, $resetonly = false) {
|
|
global $CFG, $USER;
|
|
|
|
static $cache = array();
|
|
|
|
// compartibility with syntax prior to 2.4:
|
|
if ($courseorid === 'reset') {
|
|
debugging("Using the string 'reset' as the first argument of get_fast_modinfo() is deprecated. Use get_fast_modinfo(0,0,true) instead.", DEBUG_DEVELOPER);
|
|
$courseorid = 0;
|
|
$resetonly = true;
|
|
}
|
|
|
|
// Function get_fast_modinfo() can never be called during upgrade unless it is used for clearing cache only.
|
|
if (!$resetonly) {
|
|
upgrade_ensure_not_running();
|
|
}
|
|
|
|
if (is_object($courseorid)) {
|
|
$course = $courseorid;
|
|
} else {
|
|
$course = (object)array('id' => $courseorid);
|
|
}
|
|
|
|
// Function is called with $reset = true
|
|
if ($resetonly) {
|
|
if (isset($course->id) && $course->id > 0) {
|
|
$cache[$course->id] = false;
|
|
} else {
|
|
foreach (array_keys($cache) as $key) {
|
|
$cache[$key] = false;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// Function is called with $reset = false, retrieve modinfo
|
|
if (empty($userid)) {
|
|
$userid = $USER->id;
|
|
}
|
|
|
|
if (array_key_exists($course->id, $cache)) {
|
|
if ($cache[$course->id] === false) {
|
|
// this course has been recently reset, do not rely on modinfo and sectioncache in $course
|
|
$course->modinfo = null;
|
|
$course->sectioncache = null;
|
|
} else if ($cache[$course->id]->userid == $userid) {
|
|
// this course's modinfo for the same user was recently retrieved, return cached
|
|
return $cache[$course->id];
|
|
}
|
|
}
|
|
|
|
unset($cache[$course->id]); // prevent potential reference problems when switching users
|
|
|
|
$cache[$course->id] = new course_modinfo($course, $userid);
|
|
|
|
// Ensure cache does not use too much RAM
|
|
if (count($cache) > MAX_MODINFO_CACHE_SIZE) {
|
|
reset($cache);
|
|
$key = key($cache);
|
|
// Unsetting static variable in PHP is percular, it removes the reference,
|
|
// but data remain in memory. Prior to unsetting, the varable needs to be
|
|
// set to empty to remove its remains from memory.
|
|
$cache[$key] = '';
|
|
unset($cache[$key]);
|
|
}
|
|
|
|
return $cache[$course->id];
|
|
}
|
|
|
|
/**
|
|
* Rebuilds the cached list of course activities stored in the database
|
|
* @param int $courseid - id of course to rebuild, empty means all
|
|
* @param boolean $clearonly - only clear the modinfo fields, gets rebuild automatically on the fly
|
|
*/
|
|
function rebuild_course_cache($courseid=0, $clearonly=false) {
|
|
global $COURSE, $SITE, $DB, $CFG;
|
|
|
|
// Function rebuild_course_cache() can not be called during upgrade unless it's clear only.
|
|
if (!$clearonly && !upgrade_ensure_not_running(true)) {
|
|
$clearonly = true;
|
|
}
|
|
|
|
// Destroy navigation caches
|
|
navigation_cache::destroy_volatile_caches();
|
|
|
|
if (class_exists('format_base')) {
|
|
// if file containing class is not loaded, there is no cache there anyway
|
|
format_base::reset_course_cache($courseid);
|
|
}
|
|
|
|
if ($clearonly) {
|
|
if (empty($courseid)) {
|
|
$DB->execute('UPDATE {course} set modinfo = ?, sectioncache = ?', array(null, null));
|
|
} else {
|
|
// Clear both fields in one update
|
|
$resetobj = (object)array('id' => $courseid, 'modinfo' => null, 'sectioncache' => null);
|
|
$DB->update_record('course', $resetobj);
|
|
}
|
|
// update cached global COURSE too ;-)
|
|
if ($courseid == $COURSE->id or empty($courseid)) {
|
|
$COURSE->modinfo = null;
|
|
$COURSE->sectioncache = null;
|
|
}
|
|
if ($courseid == $SITE->id) {
|
|
$SITE->modinfo = null;
|
|
$SITE->sectioncache = null;
|
|
}
|
|
// reset the fast modinfo cache
|
|
get_fast_modinfo($courseid, 0, true);
|
|
return;
|
|
}
|
|
|
|
require_once("$CFG->dirroot/course/lib.php");
|
|
|
|
if ($courseid) {
|
|
$select = array('id'=>$courseid);
|
|
} else {
|
|
$select = array();
|
|
@set_time_limit(0); // this could take a while! MDL-10954
|
|
}
|
|
|
|
$rs = $DB->get_recordset("course", $select,'','id,fullname');
|
|
foreach ($rs as $course) {
|
|
$modinfo = serialize(get_array_of_activities($course->id));
|
|
$sectioncache = serialize(course_modinfo::build_section_cache($course->id));
|
|
$updateobj = (object)array('id' => $course->id,
|
|
'modinfo' => $modinfo, 'sectioncache' => $sectioncache);
|
|
$DB->update_record("course", $updateobj);
|
|
// update cached global COURSE too ;-)
|
|
if ($course->id == $COURSE->id) {
|
|
$COURSE->modinfo = $modinfo;
|
|
$COURSE->sectioncache = $sectioncache;
|
|
}
|
|
if ($course->id == $SITE->id) {
|
|
$SITE->modinfo = $modinfo;
|
|
$SITE->sectioncache = $sectioncache;
|
|
}
|
|
}
|
|
$rs->close();
|
|
// reset the fast modinfo cache
|
|
get_fast_modinfo($courseid, 0, true);
|
|
}
|
|
|
|
|
|
/**
|
|
* Class that is the return value for the _get_coursemodule_info module API function.
|
|
*
|
|
* Note: For backward compatibility, you can also return a stdclass object from that function.
|
|
* The difference is that the stdclass object may contain an 'extra' field (deprecated,
|
|
* use extraclasses and onclick instead). The stdclass object may not contain
|
|
* the new fields defined here (content, extraclasses, customdata).
|
|
*/
|
|
class cached_cm_info {
|
|
/**
|
|
* Name (text of link) for this activity; Leave unset to accept default name
|
|
* @var string
|
|
*/
|
|
public $name;
|
|
|
|
/**
|
|
* Name of icon for this activity. Normally, this should be used together with $iconcomponent
|
|
* to define the icon, as per pix_url function.
|
|
* For backward compatibility, if this value is of the form 'mod/forum/icon' then an icon
|
|
* within that module will be used.
|
|
* @see cm_info::get_icon_url()
|
|
* @see renderer_base::pix_url()
|
|
* @var string
|
|
*/
|
|
public $icon;
|
|
|
|
/**
|
|
* Component for icon for this activity, as per pix_url; leave blank to use default 'moodle'
|
|
* component
|
|
* @see renderer_base::pix_url()
|
|
* @var string
|
|
*/
|
|
public $iconcomponent;
|
|
|
|
/**
|
|
* HTML content to be displayed on the main page below the link (if any) for this course-module
|
|
* @var string
|
|
*/
|
|
public $content;
|
|
|
|
/**
|
|
* Custom data to be stored in modinfo for this activity; useful if there are cases when
|
|
* internal information for this activity type needs to be accessible from elsewhere on the
|
|
* course without making database queries. May be of any type but should be short.
|
|
* @var mixed
|
|
*/
|
|
public $customdata;
|
|
|
|
/**
|
|
* Extra CSS class or classes to be added when this activity is displayed on the main page;
|
|
* space-separated string
|
|
* @var string
|
|
*/
|
|
public $extraclasses;
|
|
|
|
/**
|
|
* External URL image to be used by activity as icon, useful for some external-tool modules
|
|
* like lti. If set, takes precedence over $icon and $iconcomponent
|
|
* @var $moodle_url
|
|
*/
|
|
public $iconurl;
|
|
|
|
/**
|
|
* Content of onclick JavaScript; escaped HTML to be inserted as attribute value
|
|
* @var string
|
|
*/
|
|
public $onclick;
|
|
}
|
|
|
|
|
|
/**
|
|
* Data about a single section on a course. This contains the fields from the
|
|
* course_sections table, plus additional data when required.
|
|
*
|
|
* @property-read int $id Section ID - from course_sections table
|
|
* @property-read int $course Course ID - from course_sections table
|
|
* @property-read int $section Section number - from course_sections table
|
|
* @property-read string $name Section name if specified - from course_sections table
|
|
* @property-read int $visible Section visibility (1 = visible) - from course_sections table
|
|
* @property-read string $summary Section summary text if specified - from course_sections table
|
|
* @property-read int $summaryformat Section summary text format (FORMAT_xx constant) - from course_sections table
|
|
* @property-read int $showavailability When section is unavailable, this field controls whether it is shown to students (0 =
|
|
* hide completely, 1 = show greyed out with information about when it will be available) -
|
|
* from course_sections table
|
|
* @property-read int $availablefrom Available date for this section (0 if not set, or set to seconds since epoch;
|
|
* before this date, section does not display to students) - from course_sections table
|
|
* @property-read int $availableuntil Available until date for this section (0 if not set, or set to seconds since epoch;
|
|
* from this date, section does not display to students) - from course_sections table
|
|
* @property-read int $groupingid If section is restricted to users of a particular grouping, this is its id (0 if not set) -
|
|
* from course_sections table
|
|
* @property-read array $conditionscompletion Availability conditions for this section based on the completion of
|
|
* course-modules (array from course-module id to required completion state
|
|
* for that module) - from cached data in sectioncache field
|
|
* @property-read array $conditionsgrade Availability conditions for this section based on course grades (array from
|
|
* grade item id to object with ->min, ->max fields) - from cached data in
|
|
* sectioncache field
|
|
* @property-read array $conditionsfield Availability conditions for this section based on user fields
|
|
* @property-read bool $available True if this section is available to the given user i.e. if all availability conditions
|
|
* are met - obtained dynamically
|
|
* @property-read string $availableinfo If section is not available to some users, this string gives information about
|
|
* availability which can be displayed to students and/or staff (e.g. 'Available from 3 January 2010')
|
|
* for display on main page - obtained dynamically
|
|
* @property-read bool $uservisible True if this section is available to the given user (for example, if current user
|
|
* has viewhiddensections capability, they can access the section even if it is not
|
|
* visible or not available, so this would be true in that case) - obtained dynamically
|
|
* @property-read string $sequence Comma-separated list of all modules in the section. Note, this field may not exactly
|
|
* match course_sections.sequence if later has references to non-existing modules or not modules of not available module types.
|
|
*/
|
|
class section_info implements IteratorAggregate {
|
|
/**
|
|
* Section ID - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_id;
|
|
|
|
/**
|
|
* Section number - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_section;
|
|
|
|
/**
|
|
* Section name if specified - from course_sections table
|
|
* @var string
|
|
*/
|
|
private $_name;
|
|
|
|
/**
|
|
* Section visibility (1 = visible) - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_visible;
|
|
|
|
/**
|
|
* Section summary text if specified - from course_sections table
|
|
* @var string
|
|
*/
|
|
private $_summary;
|
|
|
|
/**
|
|
* Section summary text format (FORMAT_xx constant) - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_summaryformat;
|
|
|
|
/**
|
|
* When section is unavailable, this field controls whether it is shown to students (0 =
|
|
* hide completely, 1 = show greyed out with information about when it will be available) -
|
|
* from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_showavailability;
|
|
|
|
/**
|
|
* Available date for this section (0 if not set, or set to seconds since epoch; before this
|
|
* date, section does not display to students) - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_availablefrom;
|
|
|
|
/**
|
|
* Available until date for this section (0 if not set, or set to seconds since epoch; from
|
|
* this date, section does not display to students) - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_availableuntil;
|
|
|
|
/**
|
|
* If section is restricted to users of a particular grouping, this is its id
|
|
* (0 if not set) - from course_sections table
|
|
* @var int
|
|
*/
|
|
private $_groupingid;
|
|
|
|
/**
|
|
* Availability conditions for this section based on the completion of
|
|
* course-modules (array from course-module id to required completion state
|
|
* for that module) - from cached data in sectioncache field
|
|
* @var array
|
|
*/
|
|
private $_conditionscompletion;
|
|
|
|
/**
|
|
* Availability conditions for this section based on course grades (array from
|
|
* grade item id to object with ->min, ->max fields) - from cached data in
|
|
* sectioncache field
|
|
* @var array
|
|
*/
|
|
private $_conditionsgrade;
|
|
|
|
/**
|
|
* Availability conditions for this section based on user fields
|
|
* @var array
|
|
*/
|
|
private $_conditionsfield;
|
|
|
|
/**
|
|
* True if this section is available to students i.e. if all availability conditions
|
|
* are met - obtained dynamically on request, see function {@link section_info::get_available()}
|
|
* @var bool|null
|
|
*/
|
|
private $_available;
|
|
|
|
/**
|
|
* If section is not available to some users, this string gives information about
|
|
* availability which can be displayed to students and/or staff (e.g. 'Available from 3
|
|
* January 2010') for display on main page - obtained dynamically on request, see
|
|
* function {@link section_info::get_availableinfo()}
|
|
* @var string
|
|
*/
|
|
private $_availableinfo;
|
|
|
|
/**
|
|
* True if this section is available to the CURRENT user (for example, if current user
|
|
* has viewhiddensections capability, they can access the section even if it is not
|
|
* visible or not available, so this would be true in that case) - obtained dynamically
|
|
* on request, see function {@link section_info::get_uservisible()}
|
|
* @var bool|null
|
|
*/
|
|
private $_uservisible;
|
|
|
|
/**
|
|
* Default values for sectioncache fields; if a field has this value, it won't
|
|
* be stored in the sectioncache cache, to save space. Checks are done by ===
|
|
* which means values must all be strings.
|
|
* @var array
|
|
*/
|
|
private static $sectioncachedefaults = array(
|
|
'name' => null,
|
|
'summary' => '',
|
|
'summaryformat' => '1', // FORMAT_HTML, but must be a string
|
|
'visible' => '1',
|
|
'showavailability' => '0',
|
|
'availablefrom' => '0',
|
|
'availableuntil' => '0',
|
|
'groupingid' => '0',
|
|
);
|
|
|
|
/**
|
|
* Stores format options that have been cached when building 'coursecache'
|
|
* When the format option is requested we look first if it has been cached
|
|
* @var array
|
|
*/
|
|
private $cachedformatoptions = array();
|
|
|
|
/**
|
|
* Stores the list of all possible section options defined in each used course format.
|
|
* @var array
|
|
*/
|
|
static private $sectionformatoptions = array();
|
|
|
|
/**
|
|
* Stores the modinfo object passed in constructor, may be used when requesting
|
|
* dynamically obtained attributes such as available, availableinfo, uservisible.
|
|
* Also used to retrun information about current course or user.
|
|
* @var course_modinfo
|
|
*/
|
|
private $modinfo;
|
|
|
|
/**
|
|
* Constructs object from database information plus extra required data.
|
|
* @param object $data Array entry from cached sectioncache
|
|
* @param int $number Section number (array key)
|
|
* @param int $notused1 argument not used (informaion is available in $modinfo)
|
|
* @param int $notused2 argument not used (informaion is available in $modinfo)
|
|
* @param course_modinfo $modinfo Owner (needed for checking availability)
|
|
* @param int $notused3 argument not used (informaion is available in $modinfo)
|
|
*/
|
|
public function __construct($data, $number, $notused1, $notused2, $modinfo, $notused3) {
|
|
global $CFG;
|
|
require_once($CFG->dirroot.'/course/lib.php');
|
|
|
|
// Data that is always present
|
|
$this->_id = $data->id;
|
|
|
|
$defaults = self::$sectioncachedefaults +
|
|
array('conditionscompletion' => array(),
|
|
'conditionsgrade' => array(),
|
|
'conditionsfield' => array());
|
|
|
|
// Data that may use default values to save cache size
|
|
foreach ($defaults as $field => $value) {
|
|
if (isset($data->{$field})) {
|
|
$this->{'_'.$field} = $data->{$field};
|
|
} else {
|
|
$this->{'_'.$field} = $value;
|
|
}
|
|
}
|
|
|
|
// Other data from constructor arguments.
|
|
$this->_section = $number;
|
|
$this->modinfo = $modinfo;
|
|
|
|
// Cached course format data.
|
|
$course = $modinfo->get_course();
|
|
if (!isset($course->format) || !isset(self::$sectionformatoptions[$course->format])) {
|
|
$courseformat = course_get_format(isset($course->format) ? $course : $course->id);
|
|
if (!isset($course->format)) {
|
|
$course->format = $courseformat->get_format();
|
|
}
|
|
self::$sectionformatoptions[$course->format] = $courseformat->section_format_options();
|
|
}
|
|
foreach (self::$sectionformatoptions[$course->format] as $field => $option) {
|
|
if (!empty($option['cache'])) {
|
|
if (isset($data->{$field})) {
|
|
$this->cachedformatoptions[$field] = $data->{$field};
|
|
} else if (array_key_exists('cachedefault', $option)) {
|
|
$this->cachedformatoptions[$field] = $option['cachedefault'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Magic method to check if the property is set
|
|
*
|
|
* @param string $name name of the property
|
|
* @return bool
|
|
*/
|
|
public function __isset($name) {
|
|
if (method_exists($this, 'get_'.$name) ||
|
|
property_exists($this, '_'.$name) ||
|
|
array_key_exists($name, self::$sectionformatoptions[$this->modinfo->get_course()->format])) {
|
|
$value = $this->__get($name);
|
|
return isset($value);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Magic method to check if the property is empty
|
|
*
|
|
* @param string $name name of the property
|
|
* @return bool
|
|
*/
|
|
public function __empty($name) {
|
|
if (method_exists($this, 'get_'.$name) ||
|
|
property_exists($this, '_'.$name) ||
|
|
in_array($name, self::$sectionformatoptions[$this->modinfo->get_course()->format])) {
|
|
$value = $this->__get($name);
|
|
return empty($value);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Magic method to retrieve the property, this is either basic section property
|
|
* or availability information or additional properties added by course format
|
|
*
|
|
* @param string $name name of the property
|
|
* @return bool
|
|
*/
|
|
public function __get($name) {
|
|
if (method_exists($this, 'get_'.$name)) {
|
|
return $this->{'get_'.$name}();
|
|
}
|
|
if (property_exists($this, '_'.$name)) {
|
|
return $this->{'_'.$name};
|
|
}
|
|
if (array_key_exists($name, $this->cachedformatoptions)) {
|
|
return $this->cachedformatoptions[$name];
|
|
}
|
|
// precheck if the option is defined in format to avoid unnecessary DB queries in get_format_options()
|
|
if (in_array($name, self::$sectionformatoptions[$this->modinfo->get_course()->format])) {
|
|
$formatoptions = course_get_format($this->modinfo->get_course())->get_format_options($this);
|
|
return $formatoptions[$name];
|
|
}
|
|
debugging('Invalid section_info property accessed! '.$name);
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Finds whether this section is available at the moment for the current user.
|
|
*
|
|
* The value can be accessed publicly as $sectioninfo->available
|
|
*
|
|
* @return bool
|
|
*/
|
|
private function get_available() {
|
|
global $CFG;
|
|
if ($this->_available !== null) {
|
|
// Has already been calculated.
|
|
return $this->_available;
|
|
}
|
|
if (!empty($CFG->enableavailability)) {
|
|
require_once($CFG->libdir. '/conditionlib.php');
|
|
// Get availability information
|
|
$ci = new condition_info_section($this);
|
|
$this->_available = $ci->is_available($this->_availableinfo, true,
|
|
$this->modinfo->get_user_id(), $this->modinfo);
|
|
if ($this->_availableinfo === '' && $this->_groupingid) {
|
|
// Still may have some extra text in availableinfo because of groupping.
|
|
// Set as undefined so the next call to get_availabeinfo() calculates it.
|
|
$this->_availableinfo = null;
|
|
}
|
|
} else {
|
|
$this->_available = true;
|
|
$this->_availableinfo = '';
|
|
}
|
|
return $this->_available;
|
|
}
|
|
|
|
/**
|
|
* Returns the availability text shown next to the section on course page.
|
|
*
|
|
* @return string
|
|
*/
|
|
private function get_availableinfo() {
|
|
// Make sure $this->_available has been calculated, it may also fill the _availableinfo property.
|
|
$this->get_available();
|
|
if ($this->_availableinfo !== null) {
|
|
// It has been already calculated.
|
|
return $this->_availableinfo;
|
|
}
|
|
$this->_availableinfo = '';
|
|
// Display grouping info if available & not already displaying
|
|
// (it would already display if current user doesn't have access)
|
|
// for people with managegroups - same logic/class as grouping label
|
|
// on individual activities.
|
|
$context = context_course::instance($this->get_course());
|
|
$userid = $this->modinfo->get_user_id();
|
|
if ($this->_groupingid && has_capability('moodle/course:managegroups', $context, $userid)) {
|
|
$groupings = groups_get_all_groupings($this->get_course());
|
|
$this->_availableinfo = html_writer::tag('span', '(' . format_string(
|
|
$groupings[$this->_groupingid]->name, true, array('context' => $context)) .
|
|
')', array('class' => 'groupinglabel'));
|
|
}
|
|
return $this->_availableinfo;
|
|
}
|
|
|
|
/**
|
|
* Implementation of IteratorAggregate::getIterator(), allows to cycle through properties
|
|
* and use {@link convert_to_array()}
|
|
*
|
|
* @return ArrayIterator
|
|
*/
|
|
public function getIterator() {
|
|
$ret = array();
|
|
foreach (get_object_vars($this) as $key => $value) {
|
|
if (substr($key, 0, 1) == '_') {
|
|
if (method_exists($this, 'get'.$key)) {
|
|
$ret[substr($key, 1)] = $this->{'get'.$key}();
|
|
} else {
|
|
$ret[substr($key, 1)] = $this->$key;
|
|
}
|
|
}
|
|
}
|
|
$ret['sequence'] = $this->get_sequence();
|
|
$ret['course'] = $this->get_course();
|
|
$ret = array_merge($ret, course_get_format($this->modinfo->get_course())->get_format_options($this->_section));
|
|
return new ArrayIterator($ret);
|
|
}
|
|
|
|
/**
|
|
* Works out whether activity is visible *for current user* - if this is false, they
|
|
* aren't allowed to access it.
|
|
*
|
|
* @return bool
|
|
*/
|
|
private function get_uservisible() {
|
|
if ($this->_uservisible !== null) {
|
|
// Has already been calculated.
|
|
return $this->_uservisible;
|
|
}
|
|
$this->_uservisible = true;
|
|
if (!$this->_visible || !$this->get_available()) {
|
|
$coursecontext = context_course::instance($this->get_course());
|
|
$userid = $this->modinfo->get_user_id();
|
|
if (!has_capability('moodle/course:viewhiddensections', $coursecontext, $userid)) {
|
|
$this->_uservisible = false;
|
|
}
|
|
}
|
|
return $this->_uservisible;
|
|
}
|
|
|
|
/**
|
|
* Restores the course_sections.sequence value
|
|
*
|
|
* @return string
|
|
*/
|
|
private function get_sequence() {
|
|
if (!empty($this->modinfo->sections[$this->_section])) {
|
|
return implode(',', $this->modinfo->sections[$this->_section]);
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns course ID - from course_sections table
|
|
*
|
|
* @return int
|
|
*/
|
|
private function get_course() {
|
|
return $this->modinfo->get_course_id();
|
|
}
|
|
|
|
/**
|
|
* Prepares section data for inclusion in sectioncache cache, removing items
|
|
* that are set to defaults, and adding availability data if required.
|
|
*
|
|
* Called by build_section_cache in course_modinfo only; do not use otherwise.
|
|
* @param object $section Raw section data object
|
|
*/
|
|
public static function convert_for_section_cache($section) {
|
|
global $CFG;
|
|
|
|
// Course id stored in course table
|
|
unset($section->course);
|
|
// Section number stored in array key
|
|
unset($section->section);
|
|
// Sequence stored implicity in modinfo $sections array
|
|
unset($section->sequence);
|
|
|
|
// Add availability data if turned on
|
|
if ($CFG->enableavailability) {
|
|
require_once($CFG->dirroot . '/lib/conditionlib.php');
|
|
condition_info_section::fill_availability_conditions($section);
|
|
if (count($section->conditionscompletion) == 0) {
|
|
unset($section->conditionscompletion);
|
|
}
|
|
if (count($section->conditionsgrade) == 0) {
|
|
unset($section->conditionsgrade);
|
|
}
|
|
}
|
|
|
|
// Remove default data
|
|
foreach (self::$sectioncachedefaults as $field => $value) {
|
|
// Exact compare as strings to avoid problems if some strings are set
|
|
// to "0" etc.
|
|
if (isset($section->{$field}) && $section->{$field} === $value) {
|
|
unset($section->{$field});
|
|
}
|
|
}
|
|
}
|
|
}
|