mirror of
https://github.com/moodle/moodle.git
synced 2025-03-04 16:10:59 +01:00
f8c54a7469
This reverts a change performed by the previous commit where user fieldnames were being translated (and cached) when fetched, causing the information to remain static later, not responding to language switches (and perhaps leading to other problems if those structures are used lated for DB / $USER comparisons. With the commit, the translation happens on output, so no potential interferences will happen and, also, the information changes dynamically on lang switching.
1476 lines
63 KiB
PHP
1476 lines
63 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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* Used for tracking conditions that apply before activities are displayed
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* to students ('conditional availability').
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*
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* @package core_condition
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* @category condition
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* @copyright 1999 onwards Martin Dougiamas http://dougiamas.com
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* CONDITION_STUDENTVIEW_HIDE - The activity is not displayed to students at all when conditions aren't met.
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*/
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define('CONDITION_STUDENTVIEW_HIDE', 0);
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/**
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* CONDITION_STUDENTVIEW_SHOW - The activity is displayed to students as a greyed-out name, with
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* informational text that explains the conditions under which it will be available.
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*/
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define('CONDITION_STUDENTVIEW_SHOW', 1);
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/**
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* CONDITION_MISSING_NOTHING - The $item variable is expected to contain all completion-related data
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*/
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define('CONDITION_MISSING_NOTHING', 0);
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/**
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* CONDITION_MISSING_EXTRATABLE - The $item variable is expected to contain the fields from
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* the relevant table (course_modules or course_sections) but not the _availability data
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*/
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define('CONDITION_MISSING_EXTRATABLE', 1);
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/**
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* CONDITION_MISSING_EVERYTHING - The $item variable is expected to contain nothing except the ID
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*/
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define('CONDITION_MISSING_EVERYTHING', 2);
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/**
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* OP_CONTAINS - comparison operator that determines whether a specified user field contains
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* a provided variable
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*/
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define('OP_CONTAINS', 'contains');
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/**
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* OP_DOES_NOT_CONTAIN - comparison operator that determines whether a specified user field does not
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* contain a provided variable
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*/
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define('OP_DOES_NOT_CONTAIN', 'doesnotcontain');
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/**
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* OP_IS_EQUAL_TO - comparison operator that determines whether a specified user field is equal to
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* a provided variable
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*/
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define('OP_IS_EQUAL_TO', 'isequalto');
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/**
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* OP_STARTS_WITH - comparison operator that determines whether a specified user field starts with
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* a provided variable
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*/
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define('OP_STARTS_WITH', 'startswith');
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/**
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* OP_ENDS_WITH - comparison operator that determines whether a specified user field ends with
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* a provided variable
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*/
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define('OP_ENDS_WITH', 'endswith');
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/**
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* OP_IS_EMPTY - comparison operator that determines whether a specified user field is empty
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*/
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define('OP_IS_EMPTY', 'isempty');
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/**
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* OP_IS_NOT_EMPTY - comparison operator that determines whether a specified user field is not empty
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*/
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define('OP_IS_NOT_EMPTY', 'isnotempty');
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require_once($CFG->libdir.'/completionlib.php');
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/**
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* Core class to handle conditional activites
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*
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* @package core_condition
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* @category condition
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* @copyright 2012 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class condition_info extends condition_info_base {
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/**
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* Constructs with course-module details.
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*
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* @global moodle_database $DB
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* @uses CONDITION_MISSING_NOTHING
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* @param object $cm Moodle course-module object. May have extra fields
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* ->conditionsgrade, ->conditionscompletion which should come from
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* get_fast_modinfo. Should have ->availablefrom, ->availableuntil,
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* and ->showavailability, ->course, ->visible; but the only required
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* thing is ->id.
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* @param int $expectingmissing Used to control whether or not a developer
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* debugging message (performance warning) will be displayed if some of
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* the above data is missing and needs to be retrieved; a
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* CONDITION_MISSING_xx constant
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* @param bool $loaddata If you need a 'write-only' object, set this value
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* to false to prevent database access from constructor
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*/
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public function __construct($cm, $expectingmissing = CONDITION_MISSING_NOTHING,
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$loaddata=true) {
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parent::__construct($cm, 'course_modules', 'coursemoduleid',
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$expectingmissing, $loaddata);
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}
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/**
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* Adds the extra availability conditions (if any) into the given
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* course-module (or section) object.
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*
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* This function may be called statically (for the editing form) or
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* dynamically.
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*
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* @param object $cm Moodle course-module data object
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*/
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public static function fill_availability_conditions($cm) {
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parent::fill_availability_conditions_inner($cm, 'course_modules', 'coursemoduleid');
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}
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/**
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* Gets the course-module object with full necessary data to determine availability.
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* @return object Course-module object with full data
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* @throws coding_exception If data was not supplied when constructing object
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*/
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public function get_full_course_module() {
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return $this->get_full_item();
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}
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/**
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* Utility function called by modedit.php; updates the
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* course_modules_availability table based on the module form data.
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*
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* @param object $cm Course-module with as much data as necessary, min id
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* @param object $fromform Data from form
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* @param bool $wipefirst If true, wipes existing conditions
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*/
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public static function update_cm_from_form($cm, $fromform, $wipefirst=true) {
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$ci = new condition_info($cm, CONDITION_MISSING_EVERYTHING, false);
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parent::update_from_form($ci, $fromform, $wipefirst);
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}
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/**
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* Used in course/lib.php because we need to disable the completion JS if
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* a completion value affects a conditional activity.
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*
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* @global stdClass $CONDITIONLIB_PRIVATE
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* @param object $course Moodle course object
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* @param object $item Moodle course-module
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* @return bool True if this is used in a condition, false otherwise
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*/
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public static function completion_value_used_as_condition($course, $cm) {
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// Have we already worked out a list of required completion values
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// for this course? If so just use that
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global $CONDITIONLIB_PRIVATE, $DB;
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if (!array_key_exists($course->id, $CONDITIONLIB_PRIVATE->usedincondition)) {
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// We don't have data for this course, build it
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$modinfo = get_fast_modinfo($course);
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$CONDITIONLIB_PRIVATE->usedincondition[$course->id] = array();
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// Activities
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foreach ($modinfo->cms as $othercm) {
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foreach ($othercm->conditionscompletion as $cmid => $expectedcompletion) {
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$CONDITIONLIB_PRIVATE->usedincondition[$course->id][$cmid] = true;
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}
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}
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// Sections
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foreach ($modinfo->get_section_info_all() as $section) {
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foreach ($section->conditionscompletion as $cmid => $expectedcompletion) {
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$CONDITIONLIB_PRIVATE->usedincondition[$course->id][$cmid] = true;
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}
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}
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}
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return array_key_exists($cm->id, $CONDITIONLIB_PRIVATE->usedincondition[$course->id]);
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}
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protected function get_context() {
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return context_module::instance($this->item->id);
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}
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}
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/**
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* Handles conditional access to sections.
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*
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* @package core_condition
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* @category condition
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* @copyright 2012 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class condition_info_section extends condition_info_base {
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/**
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* Constructs with course-module details.
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*
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* @global moodle_database $DB
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* @uses CONDITION_MISSING_NOTHING
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* @param object $section Moodle section object. May have extra fields
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* ->conditionsgrade, ->conditionscompletion. Should have ->availablefrom,
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* ->availableuntil, and ->showavailability, ->course; but the only
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* required thing is ->id.
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* @param int $expectingmissing Used to control whether or not a developer
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* debugging message (performance warning) will be displayed if some of
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* the above data is missing and needs to be retrieved; a
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* CONDITION_MISSING_xx constant
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* @param bool $loaddata If you need a 'write-only' object, set this value
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* to false to prevent database access from constructor
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*/
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public function __construct($section, $expectingmissing = CONDITION_MISSING_NOTHING,
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$loaddata=true) {
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parent::__construct($section, 'course_sections', 'coursesectionid',
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$expectingmissing, $loaddata);
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}
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/**
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* Adds the extra availability conditions (if any) into the given
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* course-module (or section) object.
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*
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* This function may be called statically (for the editing form) or
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* dynamically.
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*
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* @param object $section Moodle section data object
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*/
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public static function fill_availability_conditions($section) {
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parent::fill_availability_conditions_inner($section, 'course_sections', 'coursesectionid');
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}
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/**
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* Gets the section object with full necessary data to determine availability.
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* @return object Section object with full data
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* @throws coding_exception If data was not supplied when constructing object
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*/
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public function get_full_section() {
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return $this->get_full_item();
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}
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/**
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* Gets list of required fields from main table.
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* @return array Array of field names
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*/
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protected function get_main_table_fields() {
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return array_merge(parent::get_main_table_fields(), array('groupingid'));
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}
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/**
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* Determines whether this particular section is currently available
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* according to these criteria.
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*
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* - This does not include the 'visible' setting (i.e. this might return
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* true even if visible is false); visible is handled independently.
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* - This does not take account of the viewhiddenactivities capability.
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* That should apply later.
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*
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* @global moodle_database $DB
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* @global stdclass $USER
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* @param string $information If the item has availability restrictions,
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* a string that describes the conditions will be stored in this variable;
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* if this variable is set blank, that means don't display anything
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* @param bool $grabthelot Performance hint: if true, caches information
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* required for all course-modules, to make the front page and similar
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* pages work more quickly (works only for current user)
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* @param int $userid If set, specifies a different user ID to check availability for
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* @param object $modinfo Usually leave as null for default. Specify when
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* calling recursively from inside get_fast_modinfo. The value supplied
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* here must include list of all CMs with 'id' and 'name'
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* @return bool True if this item is available to the user, false otherwise
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*/
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public function is_available(&$information, $grabthelot=false, $userid=0, $modinfo=null) {
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global $DB, $USER, $CONDITIONLIB_PRIVATE;
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$available = parent::is_available($information, $grabthelot, $userid, $modinfo);
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// test if user is enrolled to a grouping which has access to the section
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if (!empty($this->item->groupingid)) {
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// Get real user id
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if (!$userid) {
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$userid = $USER->id;
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}
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$context = $this->get_context();
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if ($userid != $USER->id) {
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// We are requesting for a non-current user so check it individually
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// (no cache). Do grouping check first, it's probably faster
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// than the capability check
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$gotit = $DB->record_exists_sql('
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SELECT
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1
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FROM
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{groupings} g
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JOIN {groupings_groups} gg ON g.id = gg.groupingid
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JOIN {groups_members} gm ON gg.groupid = gm.groupid
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WHERE
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g.id = ? AND gm.userid = ?',
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array($this->item->groupingid, $userid));
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if (!$gotit && !has_capability('moodle/site:accessallgroups', $context, $userid)) {
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$available = false;
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$information .= get_string('groupingnoaccess', 'condition');
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}
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} else {
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// Request is for current user - use cache
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if( !array_key_exists($this->item->course, $CONDITIONLIB_PRIVATE->groupingscache)) {
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if (has_capability('moodle/site:accessallgroups', $context)) {
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$CONDITIONLIB_PRIVATE->groupingscache[$this->item->course] = true;
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} else {
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$groupings = $DB->get_records_sql('
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SELECT
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g.id as gid
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FROM
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{groupings} g
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JOIN {groupings_groups} gg ON g.id = gg.groupingid
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JOIN {groups_members} gm ON gg.groupid = gm.groupid
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WHERE
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g.courseid = ? AND gm.userid = ?',
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array($this->item->course, $userid));
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$list = array();
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foreach ($groupings as $grouping) {
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$list[$grouping->gid] = true;
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}
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$CONDITIONLIB_PRIVATE->groupingscache[$this->item->course] = $list;
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}
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}
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$usergroupings = $CONDITIONLIB_PRIVATE->groupingscache[$this->item->course];
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if ($usergroupings !== true && !array_key_exists($this->item->groupingid, $usergroupings)) {
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$available = false;
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$information .= get_string('groupingnoaccess', 'condition');
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}
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}
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}
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$information = trim($information);
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return $available;
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}
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/**
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* Utility function called by modedit.php; updates the
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* course_modules_availability table based on the module form data.
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*
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* @param object $section Section object, must at minimum contain id
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* @param object $fromform Data from form
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* @param bool $wipefirst If true, wipes existing conditions
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*/
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public static function update_section_from_form($section, $fromform, $wipefirst=true) {
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$ci = new condition_info_section($section, CONDITION_MISSING_EVERYTHING);
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parent::update_from_form($ci, $fromform, $wipefirst);
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}
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protected function get_context() {
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return context_course::instance($this->item->course);
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}
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}
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/**
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* Base class to handle conditional items of some kind (currently either
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* course_modules or sections; they must have a corresponding _availability
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* table).
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*
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* @package core_condition
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* @category condition
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* @copyright 2012 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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abstract class condition_info_base {
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protected $item;
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/** @var bool */
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protected $gotdata;
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/** @var string */
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protected $availtable;
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/** @var string */
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protected $availfieldtable;
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/** @var string */
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protected $idfieldname;
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/** @var array */
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protected $usergroupings;
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/** @var array An array of custom profile field ids => to their shortname */
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protected $customprofilefields = null;
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/**
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* Constructs with item details.
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*
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* @global moodle_database $DB
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* @uses CONDITION_MISSING_NOTHING
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* @uses CONDITION_MISSING_EVERYTHING
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* @uses CONDITION_MISSING_EXTRATABLE
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* @uses DEBUG_DEVELOPER
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* @param object $item Object representing some kind of item (cm or section).
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* May have extra fields ->conditionsgrade, ->conditionscompletion.
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* Should have ->availablefrom, ->availableuntil, and ->showavailability,
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* ->course; but the only required thing is ->id.
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* @param string $tableprefix Prefix for table used to store availability
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* data, e.g. 'course_modules' if we are going to look at
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* course_modules_availability.
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* @param string $idfield Within this table, name of field used as item id
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* (e.g. 'coursemoduleid')
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* @param int $expectingmissing Used to control whether or not a developer
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* debugging message (performance warning) will be displayed if some of
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* the above data is missing and needs to be retrieved; a
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* CONDITION_MISSING_xx constant
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* @param bool $loaddata If you need a 'write-only' object, set this value
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* to false to prevent database access from constructor
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* @return condition_info Object which can retrieve information about the
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* activity
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*/
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public function __construct($item, $tableprefix, $idfield, $expectingmissing, $loaddata) {
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global $DB;
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// Check ID as otherwise we can't do the other queries
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if (empty($item->id)) {
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throw new coding_exception('Invalid parameters; item ID not included');
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}
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// DB table to store availability conditions
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$this->availtable = $tableprefix . '_availability';
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// DB table to store availability conditions for user fields
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$this->availfieldtable = $tableprefix . '_avail_fields';
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// Name of module/section ID field in DB
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$this->idfieldname = $idfield;
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// If not loading data, don't do anything else
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if (!$loaddata) {
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$this->item = (object)array('id' => $item->id);
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$this->gotdata = false;
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return;
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}
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// Missing basic data from course_modules
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$basicfields = $this->get_main_table_fields();
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$missingbasicfields = false;
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foreach ($basicfields as $field) {
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if (!isset($item->{$field})) {
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$missingbasicfields = true;
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break;
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}
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}
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if ($missingbasicfields) {
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if ($expectingmissing<CONDITION_MISSING_EVERYTHING) {
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debugging('Performance warning: condition_info constructor is ' .
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'faster if you pass in $item with at least basic fields ' .
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'from its table. '.
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'[This warning can be disabled, see phpdoc.]',
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DEBUG_DEVELOPER);
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}
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$item = $DB->get_record($tableprefix, array('id' => $item->id),
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implode(',', $basicfields), MUST_EXIST);
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}
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$this->item = clone($item);
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$this->gotdata = true;
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// Missing extra data
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if (!isset($item->conditionsgrade) || !isset($item->conditionscompletion) || !isset($item->conditionsfield)) {
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if ($expectingmissing<CONDITION_MISSING_EXTRATABLE) {
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debugging('Performance warning: condition_info constructor is ' .
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'faster if you pass in a $item from get_fast_modinfo or ' .
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'the equivalent for sections. ' .
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'[This warning can be disabled, see phpdoc.]',
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DEBUG_DEVELOPER);
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}
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$this->fill_availability_conditions($this->item);
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}
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}
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/**
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* Gets list of required fields from main table.
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*
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* @return array Array of field names
|
|
*/
|
|
protected function get_main_table_fields() {
|
|
return array('id', 'course', 'visible',
|
|
'availablefrom', 'availableuntil', 'showavailability');
|
|
}
|
|
|
|
/**
|
|
* Fills availability conditions into the item object, if they are missing,
|
|
* otherwise does nothing. Called by subclass fill_availability_conditions.
|
|
* @param object $item Item object
|
|
* @param string $tableprefix Prefix of name for _availability table e.g. 'course_modules'
|
|
* @param string $idfield Name of field that contains id e.g. 'coursemoduleid'
|
|
* @throws coding_exception If item object doesn't have id field
|
|
*/
|
|
protected static function fill_availability_conditions_inner($item, $tableprefix, $idfield) {
|
|
global $DB, $CFG;
|
|
if (empty($item->id)) {
|
|
throw new coding_exception('Invalid parameters; item ID not included');
|
|
}
|
|
|
|
// Does nothing if the variables are already present
|
|
if (!isset($item->conditionsgrade) || !isset($item->conditionscompletion) || !isset($item->conditionsfield)) {
|
|
$item->conditionsgrade = array();
|
|
$item->conditionscompletion = array();
|
|
$item->conditionsfield = array();
|
|
|
|
$conditions = $DB->get_records_sql('
|
|
SELECT
|
|
a.id AS aid, gi.*, a.sourcecmid, a.requiredcompletion, a.gradeitemid,
|
|
a.grademin as conditiongrademin, a.grademax as conditiongrademax
|
|
FROM
|
|
{' . $tableprefix . '_availability} a
|
|
LEFT JOIN {grade_items} gi ON gi.id = a.gradeitemid
|
|
WHERE ' . $idfield . ' = ?', array($item->id));
|
|
foreach ($conditions as $condition) {
|
|
if (!is_null($condition->sourcecmid)) {
|
|
$item->conditionscompletion[$condition->sourcecmid] =
|
|
$condition->requiredcompletion;
|
|
} else {
|
|
$minmax = new stdClass;
|
|
$minmax->min = $condition->conditiongrademin;
|
|
$minmax->max = $condition->conditiongrademax;
|
|
$minmax->name = self::get_grade_name($condition);
|
|
$item->conditionsgrade[$condition->gradeitemid] = $minmax;
|
|
}
|
|
}
|
|
|
|
// For user fields
|
|
$sql = "SELECT a.id as cmaid, a.*, uf.*
|
|
FROM {" . $tableprefix . "_avail_fields} a
|
|
LEFT JOIN {user_info_field} uf ON a.customfieldid = uf.id
|
|
WHERE " . $idfield . " = :itemid";
|
|
$conditions = $DB->get_records_sql($sql, array('itemid' => $item->id));
|
|
foreach ($conditions as $condition) {
|
|
// If the custom field is not empty, then we have a custom profile field
|
|
if (!empty($condition->customfieldid)) {
|
|
$field = $condition->customfieldid;
|
|
// Check if the profile field name is not empty, if it is
|
|
// then the custom profile field no longer exists, so
|
|
// display !missing instead.
|
|
if (!empty($condition->name)) {
|
|
$fieldname = $condition->name;
|
|
} else {
|
|
$fieldname = '!missing';
|
|
}
|
|
} else {
|
|
$field = $condition->userfield;
|
|
$fieldname = $condition->userfield;
|
|
}
|
|
$details = new stdClass;
|
|
$details->fieldname = $fieldname;
|
|
$details->operator = $condition->operator;
|
|
$details->value = $condition->value;
|
|
$item->conditionsfield[$field] = $details;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Obtains the name of a grade item.
|
|
*
|
|
* @global object $CFG
|
|
* @param object $gradeitemobj Object from get_record on grade_items table,
|
|
* (can be empty if you want to just get !missing)
|
|
* @return string Name of item of !missing if it didn't exist
|
|
*/
|
|
private static function get_grade_name($gradeitemobj) {
|
|
global $CFG;
|
|
if (isset($gradeitemobj->id)) {
|
|
require_once($CFG->libdir . '/gradelib.php');
|
|
$item = new grade_item;
|
|
grade_object::set_properties($item, $gradeitemobj);
|
|
return $item->get_name();
|
|
} else {
|
|
return '!missing'; // Ooops, missing grade
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the item object with full necessary data to determine availability.
|
|
* @return object Item object with full data
|
|
* @throws coding_exception If data was not supplied when constructing object
|
|
*/
|
|
protected function get_full_item() {
|
|
$this->require_data();
|
|
return $this->item;
|
|
}
|
|
|
|
/**
|
|
* The operators that provide the relationship
|
|
* between a field and a value.
|
|
*
|
|
* @return array Associative array from operator constant to display name
|
|
*/
|
|
public static function get_condition_user_field_operators() {
|
|
return array(
|
|
OP_CONTAINS => get_string('contains', 'condition'),
|
|
OP_DOES_NOT_CONTAIN => get_string('doesnotcontain', 'condition'),
|
|
OP_IS_EQUAL_TO => get_string('isequalto', 'condition'),
|
|
OP_STARTS_WITH => get_string('startswith', 'condition'),
|
|
OP_ENDS_WITH => get_string('endswith', 'condition'),
|
|
OP_IS_EMPTY => get_string('isempty', 'condition'),
|
|
OP_IS_NOT_EMPTY => get_string('isnotempty', 'condition'),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns list of user fields that can be compared.
|
|
*
|
|
* If you specify $formatoptions, then format_string will be called on the
|
|
* custom field names. This is necessary for multilang support to work so
|
|
* you should include this parameter unless you are going to format the
|
|
* text later.
|
|
*
|
|
* @param array $formatoptions Passed to format_string if provided
|
|
* @return array Associative array from user field constants to display name
|
|
*/
|
|
public static function get_condition_user_fields($formatoptions = null) {
|
|
global $DB;
|
|
|
|
$userfields = array(
|
|
'firstname' => get_user_field_name('firstname'),
|
|
'lastname' => get_user_field_name('lastname'),
|
|
'email' => get_user_field_name('email'),
|
|
'city' => get_user_field_name('city'),
|
|
'country' => get_user_field_name('country'),
|
|
'url' => get_user_field_name('url'),
|
|
'icq' => get_user_field_name('icq'),
|
|
'skype' => get_user_field_name('skype'),
|
|
'aim' => get_user_field_name('aim'),
|
|
'yahoo' => get_user_field_name('yahoo'),
|
|
'msn' => get_user_field_name('msn'),
|
|
'idnumber' => get_user_field_name('idnumber'),
|
|
'institution' => get_user_field_name('institution'),
|
|
'department' => get_user_field_name('department'),
|
|
'phone1' => get_user_field_name('phone1'),
|
|
'phone2' => get_user_field_name('phone2'),
|
|
'address' => get_user_field_name('address')
|
|
);
|
|
|
|
// Go through the custom profile fields now
|
|
if ($user_info_fields = $DB->get_records('user_info_field')) {
|
|
foreach ($user_info_fields as $field) {
|
|
if ($formatoptions) {
|
|
$userfields[$field->id] = format_string($field->name, true, $formatoptions);
|
|
} else {
|
|
$userfields[$field->id] = $field->name;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $userfields;
|
|
}
|
|
|
|
/**
|
|
* Adds to the database a condition based on completion of another module.
|
|
*
|
|
* @global moodle_database $DB
|
|
* @param int $cmid ID of other module
|
|
* @param int $requiredcompletion COMPLETION_xx constant
|
|
*/
|
|
public function add_completion_condition($cmid, $requiredcompletion) {
|
|
global $DB;
|
|
// Add to DB
|
|
$DB->insert_record($this->availtable, (object)array(
|
|
$this->idfieldname => $this->item->id,
|
|
'sourcecmid' => $cmid, 'requiredcompletion' => $requiredcompletion),
|
|
false);
|
|
|
|
// Store in memory too
|
|
$this->item->conditionscompletion[$cmid] = $requiredcompletion;
|
|
}
|
|
|
|
/**
|
|
* Adds user fields condition
|
|
*
|
|
* @param mixed $field numeric if it is a user profile field, character
|
|
* if it is a column in the user table
|
|
* @param int $operator specifies the relationship between field and value
|
|
* @param char $value the value of the field
|
|
*/
|
|
public function add_user_field_condition($field, $operator, $value) {
|
|
global $DB;
|
|
|
|
// Get the field name
|
|
$idfieldname = $this->idfieldname;
|
|
|
|
$objavailfield = new stdClass;
|
|
$objavailfield->$idfieldname = $this->item->id;
|
|
if (is_numeric($field)) { // If the condition field is numeric then it is a custom profile field
|
|
// Need to get the field name so we can add it to the cache
|
|
$ufield = $DB->get_field('user_info_field', 'name', array('id' => $field));
|
|
$objavailfield->fieldname = $ufield;
|
|
$objavailfield->customfieldid = $field;
|
|
} else {
|
|
$objavailfield->fieldname = $field;
|
|
$objavailfield->userfield = $field;
|
|
}
|
|
$objavailfield->operator = $operator;
|
|
$objavailfield->value = $value;
|
|
$DB->insert_record($this->availfieldtable, $objavailfield, false);
|
|
|
|
// Store in memory too
|
|
$this->item->conditionsfield[$field] = $objavailfield;
|
|
}
|
|
|
|
/**
|
|
* Adds to the database a condition based on the value of a grade item.
|
|
*
|
|
* @global moodle_database $DB
|
|
* @param int $gradeitemid ID of grade item
|
|
* @param float $min Minimum grade (>=), up to 5 decimal points, or null if none
|
|
* @param float $max Maximum grade (<), up to 5 decimal points, or null if none
|
|
* @param bool $updateinmemory If true, updates data in memory; otherwise,
|
|
* memory version may be out of date (this has performance consequences,
|
|
* so don't do it unless it really needs updating)
|
|
*/
|
|
public function add_grade_condition($gradeitemid, $min, $max, $updateinmemory=false) {
|
|
global $DB;
|
|
// Normalise nulls
|
|
if ($min==='') {
|
|
$min = null;
|
|
}
|
|
if ($max==='') {
|
|
$max = null;
|
|
}
|
|
// Add to DB
|
|
$DB->insert_record($this->availtable, (object)array(
|
|
$this->idfieldname => $this->item->id,
|
|
'gradeitemid' => $gradeitemid, 'grademin' => $min, 'grademax' => $max),
|
|
false);
|
|
|
|
// Store in memory too
|
|
if ($updateinmemory) {
|
|
$this->item->conditionsgrade[$gradeitemid] = (object) array(
|
|
'min' => $min, 'max' => $max);
|
|
$this->item->conditionsgrade[$gradeitemid]->name = self::get_grade_name(
|
|
$DB->get_record('grade_items', array('id'=>$gradeitemid)));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Erases from the database all conditions for this activity.
|
|
*
|
|
* @global moodle_database $DB
|
|
*/
|
|
public function wipe_conditions() {
|
|
// Wipe from DB
|
|
global $DB;
|
|
|
|
$DB->delete_records($this->availtable, array($this->idfieldname => $this->item->id));
|
|
$DB->delete_records($this->availfieldtable, array($this->idfieldname => $this->item->id));
|
|
|
|
// And from memory
|
|
$this->item->conditionsgrade = array();
|
|
$this->item->conditionscompletion = array();
|
|
$this->item->conditionsfield = array();
|
|
}
|
|
|
|
/**
|
|
* Obtains a string describing all availability restrictions (even if
|
|
* they do not apply any more).
|
|
*
|
|
* @global stdClass $COURSE
|
|
* @global moodle_database $DB
|
|
* @param object $modinfo Usually leave as null for default. Specify when
|
|
* calling recursively from inside get_fast_modinfo. The value supplied
|
|
* here must include list of all CMs with 'id' and 'name'
|
|
* @return string Information string (for admin) about all restrictions on
|
|
* this item
|
|
*/
|
|
public function get_full_information($modinfo=null) {
|
|
global $COURSE, $DB;
|
|
$this->require_data();
|
|
|
|
$information = '';
|
|
|
|
|
|
// Completion conditions
|
|
if (count($this->item->conditionscompletion) > 0) {
|
|
if ($this->item->course == $COURSE->id) {
|
|
$course = $COURSE;
|
|
} else {
|
|
$course = $DB->get_record('course', array('id' => $this->item->course),
|
|
'id, enablecompletion, modinfo, sectioncache', MUST_EXIST);
|
|
}
|
|
foreach ($this->item->conditionscompletion as $cmid => $expectedcompletion) {
|
|
if (!$modinfo) {
|
|
$modinfo = get_fast_modinfo($course);
|
|
}
|
|
if (empty($modinfo->cms[$cmid])) {
|
|
continue;
|
|
}
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string(
|
|
'requires_completion_' . $expectedcompletion,
|
|
'condition', $modinfo->cms[$cmid]->name) . ' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
|
|
// Grade conditions
|
|
if (count($this->item->conditionsgrade) > 0) {
|
|
foreach ($this->item->conditionsgrade as $gradeitemid => $minmax) {
|
|
// String depends on type of requirement. We are coy about
|
|
// the actual numbers, in case grades aren't released to
|
|
// students.
|
|
if (is_null($minmax->min) && is_null($minmax->max)) {
|
|
$string = 'any';
|
|
} else if (is_null($minmax->max)) {
|
|
$string = 'min';
|
|
} else if (is_null($minmax->min)) {
|
|
$string = 'max';
|
|
} else {
|
|
$string = 'range';
|
|
}
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_grade_'.$string, 'condition', $minmax->name).' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
|
|
// User field conditions
|
|
if (count($this->item->conditionsfield) > 0) {
|
|
$context = $this->get_context();
|
|
// Need the array of operators
|
|
foreach ($this->item->conditionsfield as $field => $details) {
|
|
$a = new stdclass;
|
|
// Display the fieldname into current lang.
|
|
$translatedfieldname = get_user_field_name($details->fieldname);
|
|
$a->field = format_string($translatedfieldname, true, array('context' => $context));
|
|
$a->value = s($details->value);
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_user_field_'.$details->operator, 'condition', $a) . ' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
|
|
// The date logic is complicated. The intention of this logic is:
|
|
// 1) display date without time where possible (whenever the date is
|
|
// midnight)
|
|
// 2) when the 'until' date is e.g. 00:00 on the 14th, we display it as
|
|
// 'until the 13th' (experience at the OU showed that students are
|
|
// likely to interpret 'until <date>' as 'until the end of <date>').
|
|
// 3) This behaviour becomes confusing for 'same-day' dates where there
|
|
// are some exceptions.
|
|
// Users in different time zones will typically not get the 'abbreviated'
|
|
// behaviour but it should work OK for them aside from that.
|
|
|
|
// The following cases are possible:
|
|
// a) From 13:05 on 14 Oct until 12:10 on 17 Oct (exact, exact)
|
|
// b) From 14 Oct until 12:11 on 17 Oct (midnight, exact)
|
|
// c) From 13:05 on 14 Oct until 17 Oct (exact, midnight 18 Oct)
|
|
// d) From 14 Oct until 17 Oct (midnight 14 Oct, midnight 18 Oct)
|
|
// e) On 14 Oct (midnight 14 Oct, midnight 15 Oct)
|
|
// f) From 13:05 on 14 Oct until 0:00 on 15 Oct (exact, midnight, same day)
|
|
// g) From 0:00 on 14 Oct until 12:05 on 14 Oct (midnight, exact, same day)
|
|
// h) From 13:05 on 14 Oct (exact)
|
|
// i) From 14 Oct (midnight)
|
|
// j) Until 13:05 on 14 Oct (exact)
|
|
// k) Until 14 Oct (midnight 15 Oct)
|
|
|
|
// Check if start and end dates are 'midnights', if so we show in short form
|
|
$shortfrom = self::is_midnight($this->item->availablefrom);
|
|
$shortuntil = self::is_midnight($this->item->availableuntil);
|
|
|
|
// For some checks and for display, we need the previous day for the 'until'
|
|
// value, if we are going to display it in short form
|
|
if ($this->item->availableuntil) {
|
|
$daybeforeuntil = strtotime('-1 day', usergetmidnight($this->item->availableuntil));
|
|
}
|
|
|
|
// Special case for if one but not both are exact and they are within a day
|
|
if ($this->item->availablefrom && $this->item->availableuntil &&
|
|
$shortfrom != $shortuntil && $daybeforeuntil < $this->item->availablefrom) {
|
|
// Don't use abbreviated version (see examples f, g above)
|
|
$shortfrom = false;
|
|
$shortuntil = false;
|
|
}
|
|
|
|
// When showing short end date, the display time is the 'day before' one
|
|
$displayuntil = $shortuntil ? $daybeforeuntil : $this->item->availableuntil;
|
|
|
|
if ($this->item->availablefrom && $this->item->availableuntil) {
|
|
if ($shortfrom && $shortuntil && $daybeforeuntil == $this->item->availablefrom) {
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_date_both_single_day', 'condition',
|
|
self::show_time($this->item->availablefrom, true));
|
|
$information .= html_writer::end_tag('li');
|
|
} else {
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_date_both', 'condition', (object)array(
|
|
'from' => self::show_time($this->item->availablefrom, $shortfrom),
|
|
'until' => self::show_time($displayuntil, $shortuntil)));
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
} else if ($this->item->availablefrom) {
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_date', 'condition',
|
|
self::show_time($this->item->availablefrom, $shortfrom));
|
|
$information .= html_writer::end_tag('li');
|
|
} else if ($this->item->availableuntil) {
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_date_before', 'condition',
|
|
self::show_time($displayuntil, $shortuntil));
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
|
|
// The information is in <li> tags, but to avoid taking up more space
|
|
// if there is only a single item, we strip out the list tags so that it
|
|
// is plain text in that case.
|
|
if (!empty($information)) {
|
|
$li = strpos($information, '<li>', 4);
|
|
if ($li === false) {
|
|
$information = preg_replace('~^<li>(.*)</li>$~', '$1', $information);
|
|
} else {
|
|
$information = html_writer::tag('ul', $information);
|
|
}
|
|
$information = trim($information);
|
|
}
|
|
return $information;
|
|
}
|
|
|
|
/**
|
|
* Checks whether a given time refers exactly to midnight (in current user
|
|
* timezone).
|
|
*
|
|
* @param int $time Time
|
|
* @return bool True if time refers to midnight, false if it's some other
|
|
* time or if it is set to zero
|
|
*/
|
|
private static function is_midnight($time) {
|
|
return $time && usergetmidnight($time) == $time;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this particular item is currently available
|
|
* according to these criteria.
|
|
*
|
|
* - This does not include the 'visible' setting (i.e. this might return
|
|
* true even if visible is false); visible is handled independently.
|
|
* - This does not take account of the viewhiddenactivities capability.
|
|
* That should apply later.
|
|
*
|
|
* @global stdClass $COURSE
|
|
* @global moodle_database $DB
|
|
* @uses COMPLETION_COMPLETE
|
|
* @uses COMPLETION_COMPLETE_FAIL
|
|
* @uses COMPLETION_COMPLETE_PASS
|
|
* @param string $information If the item has availability restrictions,
|
|
* a string that describes the conditions will be stored in this variable;
|
|
* if this variable is set blank, that means don't display anything
|
|
* @param bool $grabthelot Performance hint: if true, caches information
|
|
* required for all course-modules, to make the front page and similar
|
|
* pages work more quickly (works only for current user)
|
|
* @param int $userid If set, specifies a different user ID to check availability for
|
|
* @param object $modinfo Usually leave as null for default. Specify when
|
|
* calling recursively from inside get_fast_modinfo. The value supplied
|
|
* here must include list of all CMs with 'id' and 'name'
|
|
* @return bool True if this item is available to the user, false otherwise
|
|
*/
|
|
public function is_available(&$information, $grabthelot=false, $userid=0, $modinfo=null) {
|
|
global $COURSE, $DB;
|
|
$this->require_data();
|
|
|
|
$available = true;
|
|
$information = '';
|
|
|
|
// Check each completion condition
|
|
if (count($this->item->conditionscompletion) > 0) {
|
|
if ($this->item->course == $COURSE->id) {
|
|
$course = $COURSE;
|
|
} else {
|
|
$course = $DB->get_record('course', array('id' => $this->item->course),
|
|
'id, enablecompletion, modinfo, sectioncache', MUST_EXIST);
|
|
}
|
|
|
|
$completion = new completion_info($course);
|
|
foreach ($this->item->conditionscompletion as $cmid => $expectedcompletion) {
|
|
// If this depends on a deleted module, handle that situation
|
|
// gracefully.
|
|
if (!$modinfo) {
|
|
$modinfo = get_fast_modinfo($course);
|
|
}
|
|
if (empty($modinfo->cms[$cmid])) {
|
|
global $PAGE;
|
|
if (isset($PAGE) && strpos($PAGE->pagetype, 'course-view-')===0) {
|
|
debugging("Warning: activity {$this->item->id} '{$this->item->name}' has condition " .
|
|
"on deleted activity $cmid (to get rid of this message, edit the named activity)");
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// The completion system caches its own data
|
|
$completiondata = $completion->get_data((object)array('id' => $cmid),
|
|
$grabthelot, $userid, $modinfo);
|
|
|
|
$thisisok = true;
|
|
if ($expectedcompletion==COMPLETION_COMPLETE) {
|
|
// 'Complete' also allows the pass, fail states
|
|
switch ($completiondata->completionstate) {
|
|
case COMPLETION_COMPLETE:
|
|
case COMPLETION_COMPLETE_FAIL:
|
|
case COMPLETION_COMPLETE_PASS:
|
|
break;
|
|
default:
|
|
$thisisok = false;
|
|
}
|
|
} else {
|
|
// Other values require exact match
|
|
if ($completiondata->completionstate!=$expectedcompletion) {
|
|
$thisisok = false;
|
|
}
|
|
}
|
|
if (!$thisisok) {
|
|
$available = false;
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string(
|
|
'requires_completion_' . $expectedcompletion,
|
|
'condition', $modinfo->cms[$cmid]->name) . ' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check each grade condition
|
|
if (count($this->item->conditionsgrade)>0) {
|
|
foreach ($this->item->conditionsgrade as $gradeitemid => $minmax) {
|
|
$score = $this->get_cached_grade_score($gradeitemid, $grabthelot, $userid);
|
|
if ($score===false ||
|
|
(!is_null($minmax->min) && $score<$minmax->min) ||
|
|
(!is_null($minmax->max) && $score>=$minmax->max)) {
|
|
// Grade fail
|
|
$available = false;
|
|
// String depends on type of requirement. We are coy about
|
|
// the actual numbers, in case grades aren't released to
|
|
// students.
|
|
if (is_null($minmax->min) && is_null($minmax->max)) {
|
|
$string = 'any';
|
|
} else if (is_null($minmax->max)) {
|
|
$string = 'min';
|
|
} else if (is_null($minmax->min)) {
|
|
$string = 'max';
|
|
} else {
|
|
$string = 'range';
|
|
}
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_grade_' . $string, 'condition', $minmax->name) . ' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if user field condition
|
|
if (count($this->item->conditionsfield) > 0) {
|
|
$context = $this->get_context();
|
|
foreach ($this->item->conditionsfield as $field => $details) {
|
|
$uservalue = $this->get_cached_user_profile_field($userid, $field);
|
|
if (!$this->is_field_condition_met($details->operator, $uservalue, $details->value)) {
|
|
// Set available to false
|
|
$available = false;
|
|
$a = new stdClass();
|
|
$a->field = format_string($details->fieldname, true, array('context' => $context));
|
|
$a->value = s($details->value);
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_user_field_'.$details->operator, 'condition', $a) . ' ';
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
}
|
|
|
|
// Test dates
|
|
if ($this->item->availablefrom) {
|
|
if (time() < $this->item->availablefrom) {
|
|
$available = false;
|
|
|
|
$information .= html_writer::start_tag('li');
|
|
$information .= get_string('requires_date', 'condition',
|
|
self::show_time($this->item->availablefrom,
|
|
self::is_midnight($this->item->availablefrom)));
|
|
$information .= html_writer::end_tag('li');
|
|
}
|
|
}
|
|
|
|
if ($this->item->availableuntil) {
|
|
if (time() >= $this->item->availableuntil) {
|
|
$available = false;
|
|
// But we don't display any information about this case. This is
|
|
// because the only reason to set a 'disappear' date is usually
|
|
// to get rid of outdated information/clutter in which case there
|
|
// is no point in showing it...
|
|
|
|
// Note it would be nice if we could make it so that the 'until'
|
|
// date appears below the item while the item is still accessible,
|
|
// unfortunately this is not possible in the current system. Maybe
|
|
// later, or if somebody else wants to add it.
|
|
}
|
|
}
|
|
|
|
// If the item is marked as 'not visible' then we don't change the available
|
|
// flag (visible/available are treated distinctly), but we remove any
|
|
// availability info. If the item is hidden with the eye icon, it doesn't
|
|
// make sense to show 'Available from <date>' or similar, because even
|
|
// when that date arrives it will still not be available unless somebody
|
|
// toggles the eye icon.
|
|
if (!$this->item->visible) {
|
|
$information = '';
|
|
}
|
|
|
|
// The information is in <li> tags, but to avoid taking up more space
|
|
// if there is only a single item, we strip out the list tags so that it
|
|
// is plain text in that case.
|
|
if (!empty($information)) {
|
|
$li = strpos($information, '<li>', 4);
|
|
if ($li === false) {
|
|
$information = preg_replace('~^<li>(.*)</li>$~', '$1', $information);
|
|
} else {
|
|
$information = html_writer::tag('ul', $information);
|
|
}
|
|
$information = trim($information);
|
|
}
|
|
return $available;
|
|
}
|
|
|
|
/**
|
|
* Shows a time either as a date or a full date and time, according to
|
|
* user's timezone.
|
|
*
|
|
* @param int $time Time
|
|
* @param bool $dateonly If true, uses date only
|
|
* @return string Date
|
|
*/
|
|
private function show_time($time, $dateonly) {
|
|
return userdate($time,
|
|
get_string($dateonly ? 'strftimedate' : 'strftimedatetime', 'langconfig'));
|
|
}
|
|
|
|
/**
|
|
* Checks whether availability information should be shown to normal users.
|
|
*
|
|
* @return bool True if information about availability should be shown to
|
|
* normal users
|
|
* @throws coding_exception If data wasn't loaded
|
|
*/
|
|
public function show_availability() {
|
|
$this->require_data();
|
|
return $this->item->showavailability;
|
|
}
|
|
|
|
/**
|
|
* Internal function cheks that data was loaded.
|
|
*
|
|
* @throws coding_exception If data wasn't loaded
|
|
*/
|
|
private function require_data() {
|
|
if (!$this->gotdata) {
|
|
throw new coding_exception('Error: cannot call when info was ' .
|
|
'constructed without data');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Obtains a grade score. Note that this score should not be displayed to
|
|
* the user, because gradebook rules might prohibit that. It may be a
|
|
* non-final score subject to adjustment later.
|
|
*
|
|
* @global stdClass $USER
|
|
* @global moodle_database $DB
|
|
* @global stdClass $SESSION
|
|
* @param int $gradeitemid Grade item ID we're interested in
|
|
* @param bool $grabthelot If true, grabs all scores for current user on
|
|
* this course, so that later ones come from cache
|
|
* @param int $userid Set if requesting grade for a different user (does
|
|
* not use cache)
|
|
* @return float Grade score as a percentage in range 0-100 (e.g. 100.0
|
|
* or 37.21), or false if user does not have a grade yet
|
|
*/
|
|
private function get_cached_grade_score($gradeitemid, $grabthelot=false, $userid=0) {
|
|
global $USER, $DB, $SESSION;
|
|
if ($userid==0 || $userid==$USER->id) {
|
|
// For current user, go via cache in session
|
|
if (empty($SESSION->gradescorecache) || $SESSION->gradescorecacheuserid!=$USER->id) {
|
|
$SESSION->gradescorecache = array();
|
|
$SESSION->gradescorecacheuserid = $USER->id;
|
|
}
|
|
if (!array_key_exists($gradeitemid, $SESSION->gradescorecache)) {
|
|
if ($grabthelot) {
|
|
// Get all grades for the current course
|
|
$rs = $DB->get_recordset_sql('
|
|
SELECT
|
|
gi.id,gg.finalgrade,gg.rawgrademin,gg.rawgrademax
|
|
FROM
|
|
{grade_items} gi
|
|
LEFT JOIN {grade_grades} gg ON gi.id=gg.itemid AND gg.userid=?
|
|
WHERE
|
|
gi.courseid = ?', array($USER->id, $this->item->course));
|
|
foreach ($rs as $record) {
|
|
$SESSION->gradescorecache[$record->id] =
|
|
is_null($record->finalgrade)
|
|
// No grade = false
|
|
? false
|
|
// Otherwise convert grade to percentage
|
|
: (($record->finalgrade - $record->rawgrademin) * 100) /
|
|
($record->rawgrademax - $record->rawgrademin);
|
|
|
|
}
|
|
$rs->close();
|
|
// And if it's still not set, well it doesn't exist (eg
|
|
// maybe the user set it as a condition, then deleted the
|
|
// grade item) so we call it false
|
|
if (!array_key_exists($gradeitemid, $SESSION->gradescorecache)) {
|
|
$SESSION->gradescorecache[$gradeitemid] = false;
|
|
}
|
|
} else {
|
|
// Just get current grade
|
|
$record = $DB->get_record('grade_grades', array(
|
|
'userid'=>$USER->id, 'itemid'=>$gradeitemid));
|
|
if ($record && !is_null($record->finalgrade)) {
|
|
$score = (($record->finalgrade - $record->rawgrademin) * 100) /
|
|
($record->rawgrademax - $record->rawgrademin);
|
|
} else {
|
|
// Treat the case where row exists but is null, same as
|
|
// case where row doesn't exist
|
|
$score = false;
|
|
}
|
|
$SESSION->gradescorecache[$gradeitemid]=$score;
|
|
}
|
|
}
|
|
return $SESSION->gradescorecache[$gradeitemid];
|
|
} else {
|
|
// Not the current user, so request the score individually
|
|
$record = $DB->get_record('grade_grades', array(
|
|
'userid'=>$userid, 'itemid'=>$gradeitemid));
|
|
if ($record && !is_null($record->finalgrade)) {
|
|
$score = (($record->finalgrade - $record->rawgrademin) * 100) /
|
|
($record->rawgrademax - $record->rawgrademin);
|
|
} else {
|
|
// Treat the case where row exists but is null, same as
|
|
// case where row doesn't exist
|
|
$score = false;
|
|
}
|
|
return $score;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if a field meets the required conditions, false otherwise.
|
|
*
|
|
* @param string $operator the requirement/condition
|
|
* @param string $uservalue the user's value
|
|
* @param string $value the value required
|
|
* @return boolean
|
|
*/
|
|
private function is_field_condition_met($operator, $uservalue, $value) {
|
|
if ($uservalue === false) {
|
|
// If the user value is false this is an instant fail.
|
|
// All user values come from the database as either data or the default.
|
|
// They will always be a string.
|
|
return false;
|
|
}
|
|
$fieldconditionmet = true;
|
|
// Just to be doubly sure it is a string.
|
|
$uservalue = (string)$uservalue;
|
|
switch($operator) {
|
|
case OP_CONTAINS: // contains
|
|
$pos = strpos($uservalue, $value);
|
|
if ($pos === false) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
case OP_DOES_NOT_CONTAIN: // does not contain
|
|
if (!empty($value)) {
|
|
$pos = strpos($uservalue, $value);
|
|
if ($pos !== false) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
}
|
|
break;
|
|
case OP_IS_EQUAL_TO: // equal to
|
|
if ($value !== $uservalue) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
case OP_STARTS_WITH: // starts with
|
|
$length = strlen($value);
|
|
if ((substr($uservalue, 0, $length) !== $value)) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
case OP_ENDS_WITH: // ends with
|
|
$length = strlen($value);
|
|
$start = $length * -1; // negative
|
|
if (substr($uservalue, $start) !== $value) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
case OP_IS_EMPTY: // is empty
|
|
if (!empty($uservalue)) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
case OP_IS_NOT_EMPTY: // is not empty
|
|
if (empty($uservalue)) {
|
|
$fieldconditionmet = false;
|
|
}
|
|
break;
|
|
}
|
|
return $fieldconditionmet;
|
|
}
|
|
|
|
/**
|
|
* Return the value for a user's profile field
|
|
*
|
|
* @param int $userid set if requesting grade for a different user (does not use cache)
|
|
* @param int $fieldid the user profile field id
|
|
* @return string the user value, or false if user does not have a user field value yet
|
|
*/
|
|
protected function get_cached_user_profile_field($userid, $fieldid) {
|
|
global $USER, $DB, $CFG;
|
|
|
|
if ($userid === 0) {
|
|
// Map out userid = 0 to the current user
|
|
$userid = $USER->id;
|
|
}
|
|
$iscurrentuser = $USER->id == $userid;
|
|
|
|
if (isguestuser($userid) || ($iscurrentuser && !isloggedin())) {
|
|
// Must be logged in and can't be the guest. (e.g. front page)
|
|
return false;
|
|
}
|
|
|
|
// Custom profile fields will be numeric, there are no numeric standard profile fields so this is not a problem.
|
|
$iscustomprofilefield = is_numeric($fieldid);
|
|
if ($iscustomprofilefield) {
|
|
// As its a custom profile field we need to map the id back to the actual field.
|
|
// We'll also preload all of the other custom profile fields just in case and ensure we have the
|
|
// default value available as well.
|
|
if ($this->customprofilefields === null) {
|
|
$this->customprofilefields = $DB->get_records('user_info_field', null, 'sortorder ASC, id ASC', 'id, shortname, defaultdata');
|
|
}
|
|
if (!array_key_exists($fieldid, $this->customprofilefields)) {
|
|
// No such field exists.
|
|
// This shouldn't normally happen but occur if things go wrong when deleting a custom profile field
|
|
// or when restoring a backup of a course with user profile field conditions.
|
|
return false;
|
|
}
|
|
$field = $this->customprofilefields[$fieldid]->shortname;
|
|
} else {
|
|
$field = $fieldid;
|
|
}
|
|
|
|
// If its the current user than most likely we will be able to get this information from $USER.
|
|
// If its a regular profile field then it should already be available, if not then we have a mega problem.
|
|
// If its a custom profile field then it should be available but may not be. If it is then we use the value
|
|
// available, otherwise we load all custom profile fields into a temp object and refer to that.
|
|
// Noting its not going be great for performance if we have to use the temp object as it involves loading the
|
|
// custom profile field API and classes.
|
|
if ($iscurrentuser) {
|
|
if (!$iscustomprofilefield) {
|
|
if (property_exists($USER, $field)) {
|
|
return $USER->{$field};
|
|
} else {
|
|
// Unknown user field. This should not happen.
|
|
throw new coding_exception('Requested user profile field does not exist');
|
|
}
|
|
}
|
|
// Checking if the custom profile fields are already available.
|
|
if (!isset($USER->profile)) {
|
|
// Drat! they're not. We need to use a temp object and load them.
|
|
// We don't use $USER as the profile fields are loaded into the object.
|
|
$user = new stdClass;
|
|
$user->id = $USER->id;
|
|
// This should ALWAYS be set, but just in case we check.
|
|
require_once($CFG->dirroot.'/user/profile/lib.php');
|
|
profile_load_custom_fields($user);
|
|
if (array_key_exists($field, $user->profile)) {
|
|
return $user->profile[$field];
|
|
}
|
|
} else if (array_key_exists($field, $USER->profile)) {
|
|
// Hurrah they're available, this is easy.
|
|
return $USER->profile[$field];
|
|
}
|
|
// The profile field doesn't exist.
|
|
return false;
|
|
} else {
|
|
// Loading for another user.
|
|
if ($iscustomprofilefield) {
|
|
// Fetch the data for the field. Noting we keep this query simple so that Database caching takes care of performance
|
|
// for us (this will likely be hit again).
|
|
// We are able to do this because we've already pre-loaded the custom fields.
|
|
$data = $DB->get_field('user_info_data', 'data', array('userid' => $userid, 'fieldid' => $fieldid), IGNORE_MISSING);
|
|
// If we have data return that, otherwise return the default.
|
|
if ($data !== false) {
|
|
return $data;
|
|
} else {
|
|
return $this->customprofilefields[$field]->defaultdata;
|
|
}
|
|
} else {
|
|
// Its a standard field, retrieve it from the user.
|
|
return $DB->get_field('user', $field, array('id' => $userid), MUST_EXIST);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* For testing only. Wipes information cached in user session.
|
|
*
|
|
* @global stdClass $SESSION
|
|
*/
|
|
static function wipe_session_cache() {
|
|
global $SESSION;
|
|
unset($SESSION->gradescorecache);
|
|
unset($SESSION->gradescorecacheuserid);
|
|
unset($SESSION->userfieldcache);
|
|
unset($SESSION->userfieldcacheuserid);
|
|
}
|
|
|
|
/**
|
|
* Initialises the global cache
|
|
* @global stdClass $CONDITIONLIB_PRIVATE
|
|
*/
|
|
public static function init_global_cache() {
|
|
global $CONDITIONLIB_PRIVATE;
|
|
$CONDITIONLIB_PRIVATE = new stdClass;
|
|
$CONDITIONLIB_PRIVATE->usedincondition = array();
|
|
$CONDITIONLIB_PRIVATE->groupingscache = array();
|
|
}
|
|
|
|
/**
|
|
* Utility function that resets grade/completion conditions in table based
|
|
* in data from editing form.
|
|
*
|
|
* @param condition_info_base $ci Condition info
|
|
* @param object $fromform Data from form
|
|
* @param bool $wipefirst If true, wipes existing conditions
|
|
*/
|
|
protected static function update_from_form(condition_info_base $ci, $fromform, $wipefirst) {
|
|
if ($wipefirst) {
|
|
$ci->wipe_conditions();
|
|
}
|
|
foreach ($fromform->conditiongradegroup as $record) {
|
|
if($record['conditiongradeitemid']) {
|
|
$ci->add_grade_condition($record['conditiongradeitemid'],
|
|
unformat_float($record['conditiongrademin']), unformat_float($record['conditiongrademax']));
|
|
}
|
|
}
|
|
foreach ($fromform->conditionfieldgroup as $record) {
|
|
if($record['conditionfield']) {
|
|
$ci->add_user_field_condition($record['conditionfield'],
|
|
$record['conditionfieldoperator'],
|
|
$record['conditionfieldvalue']);
|
|
}
|
|
}
|
|
if(isset ($fromform->conditioncompletiongroup)) {
|
|
foreach($fromform->conditioncompletiongroup as $record) {
|
|
if($record['conditionsourcecmid']) {
|
|
$ci->add_completion_condition($record['conditionsourcecmid'],
|
|
$record['conditionrequiredcompletion']);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Obtains context for any necessary checks.
|
|
*
|
|
* @return context Suitable context for the item
|
|
*/
|
|
protected abstract function get_context();
|
|
}
|
|
|
|
condition_info::init_global_cache();
|