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7e93539cf6
Some grade object (outcomes,scales) can be created at site or course context, so this patch just makes sure we use the respective context when applying format_string to the name in the get_name() function.
425 lines
13 KiB
PHP
425 lines
13 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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* Definition of grade outcome class
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*
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* @package core_grades
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* @category grade
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* @copyright 2006 Nicolas Connault
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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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require_once('grade_object.php');
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/**
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* Class representing a grade outcome.
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*
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* It is responsible for handling its DB representation, modifying and returning its metadata.
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*
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* @package core_grades
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* @category grade
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* @copyright 2006 Nicolas Connault
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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 grade_outcome extends grade_object {
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/**
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* DB Table (used by grade_object).
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* @var string $table
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*/
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public $table = 'grade_outcomes';
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/**
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* Array of required table fields, must start with 'id'.
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* @var array $required_fields
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*/
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public $required_fields = array('id', 'courseid', 'shortname', 'fullname', 'scaleid','description',
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'descriptionformat', 'timecreated', 'timemodified', 'usermodified');
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/**
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* The course this outcome belongs to.
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* @var int $courseid
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*/
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public $courseid;
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/**
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* The shortname of the outcome.
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* @var string $shortname
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*/
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public $shortname;
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/**
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* The fullname of the outcome.
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* @var string $fullname
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*/
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public $fullname;
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/**
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* A full grade_scale object referenced by $this->scaleid.
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* @var object $scale
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*/
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public $scale;
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/**
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* The id of the scale referenced by this outcome.
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* @var int $scaleid
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*/
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public $scaleid;
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/**
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* The description of this outcome - FORMAT_MOODLE.
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* @var string $description
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*/
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public $description;
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/**
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* The userid of the person who last modified this outcome.
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*
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* @var int $usermodified
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*/
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public $usermodified;
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/**
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* Deletes this outcome from the database.
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*
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* @param string $source from where was the object deleted (mod/forum, manual, etc.)
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* @return bool success
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*/
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public function delete($source=null) {
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global $DB;
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if (!empty($this->courseid)) {
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$DB->delete_records('grade_outcomes_courses', array('outcomeid' => $this->id, 'courseid' => $this->courseid));
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}
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if (parent::delete($source)) {
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$context = context_system::instance();
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$fs = get_file_storage();
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$files = $fs->get_area_files($context->id, 'grade', 'outcome', $this->id);
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foreach ($files as $file) {
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$file->delete();
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}
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return true;
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}
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return false;
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}
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/**
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* Records this object in the Database, sets its id to the returned value, and returns that value.
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* If successful this function also fetches the new object data from database and stores it
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* in object properties.
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*
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* @param string $source from where was the object inserted (mod/forum, manual, etc.)
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* @return int PK ID if successful, false otherwise
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*/
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public function insert($source=null) {
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global $DB;
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$this->timecreated = $this->timemodified = time();
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if ($result = parent::insert($source)) {
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if (!empty($this->courseid)) {
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$goc = new stdClass();
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$goc->courseid = $this->courseid;
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$goc->outcomeid = $this->id;
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$DB->insert_record('grade_outcomes_courses', $goc);
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}
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}
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return $result;
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}
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/**
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* In addition to update() it also updates grade_outcomes_courses if needed
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*
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* @param string $source from where was the object inserted
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* @return bool success
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*/
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public function update($source=null) {
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$this->timemodified = time();
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if ($result = parent::update($source)) {
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if (!empty($this->courseid)) {
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$this->use_in($this->courseid);
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}
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}
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return $result;
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}
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/**
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* Mark outcome as used in a course
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*
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* @param int $courseid
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* @return False if invalid courseid requested
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*/
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public function use_in($courseid) {
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global $DB;
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if (!empty($this->courseid) and $courseid != $this->courseid) {
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return false;
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}
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if (!$DB->record_exists('grade_outcomes_courses', array('courseid' => $courseid, 'outcomeid' => $this->id))) {
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$goc = new stdClass();
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$goc->courseid = $courseid;
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$goc->outcomeid = $this->id;
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$DB->insert_record('grade_outcomes_courses', $goc);
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}
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return true;
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}
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/**
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* Finds and returns a grade_outcome instance based on params.
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*
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* @static
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* @param array $params associative arrays varname=>value
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* @return object grade_outcome instance or false if none found.
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*/
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public static function fetch($params) {
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return grade_object::fetch_helper('grade_outcomes', 'grade_outcome', $params);
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}
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/**
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* Finds and returns all grade_outcome instances based on params.
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*
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* @static
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* @param array $params associative arrays varname=>value
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* @return array array of grade_outcome insatnces or false if none found.
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*/
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public static function fetch_all($params) {
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return grade_object::fetch_all_helper('grade_outcomes', 'grade_outcome', $params);
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}
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/**
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* Instantiates a grade_scale object whose data is retrieved from the database
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*
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* @return grade_scale
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*/
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public function load_scale() {
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if (empty($this->scale->id) or $this->scale->id != $this->scaleid) {
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$this->scale = grade_scale::fetch(array('id'=>$this->scaleid));
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$this->scale->load_items();
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}
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return $this->scale;
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}
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/**
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* Static function returning all global outcomes
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*
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* @static
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* @return array
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*/
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public static function fetch_all_global() {
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if (!$outcomes = grade_outcome::fetch_all(array('courseid'=>null))) {
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$outcomes = array();
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}
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return $outcomes;
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}
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/**
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* Static function returning all local course outcomes
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*
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* @static
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* @param int $courseid
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* @return array
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*/
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public static function fetch_all_local($courseid) {
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if (!$outcomes =grade_outcome::fetch_all(array('courseid'=>$courseid))) {
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$outcomes = array();
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}
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return $outcomes;
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}
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/**
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* Static method that returns all outcomes available in course
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*
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* @static
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* @param int $courseid
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* @return array
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*/
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public static function fetch_all_available($courseid) {
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global $CFG, $DB;
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$result = array();
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$params = array($courseid);
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$sql = "SELECT go.*
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FROM {grade_outcomes} go, {grade_outcomes_courses} goc
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WHERE go.id = goc.outcomeid AND goc.courseid = ?
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ORDER BY go.id ASC";
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if ($datas = $DB->get_records_sql($sql, $params)) {
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foreach($datas as $data) {
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$instance = new grade_outcome();
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grade_object::set_properties($instance, $data);
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$result[$instance->id] = $instance;
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}
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}
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return $result;
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}
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/**
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* Returns the most descriptive field for this object. This is a standard method used
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* when we do not know the exact type of an object.
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*
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* @return string name
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*/
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public function get_name() {
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// Grade outcomes can be created at site or course context, so set the filter context appropriately.
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$context = empty($this->courseid) ? context_system::instance() : context_course::instance($this->courseid);
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return format_string($this->fullname, false, ["context" => $context]);
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}
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/**
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* Returns unique outcome short name.
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*
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* @return string name
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*/
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public function get_shortname() {
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return $this->shortname;
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}
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/**
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* Returns the formatted grade description with URLs converted
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*
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* @return string
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*/
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public function get_description() {
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global $CFG;
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require_once($CFG->libdir . '/filelib.php');
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$options = new stdClass;
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$options->noclean = true;
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$systemcontext = context_system::instance();
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$description = file_rewrite_pluginfile_urls($this->description, 'pluginfile.php', $systemcontext->id, 'grade', 'outcome', $this->id);
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return format_text($description, $this->descriptionformat, $options);
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}
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/**
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* Checks if outcome can be deleted.
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*
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* @return bool
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*/
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public function can_delete() {
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if ($this->get_item_uses_count()) {
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return false;
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}
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if (empty($this->courseid)) {
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if ($this->get_course_uses_count()) {
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return false;
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}
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}
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return true;
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}
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/**
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* Returns the number of places where outcome is used.
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*
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* @return int
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*/
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public function get_course_uses_count() {
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global $DB;
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if (!empty($this->courseid)) {
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return 1;
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}
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return $DB->count_records('grade_outcomes_courses', array('outcomeid' => $this->id));
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}
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/**
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* Returns the number of grade items that use this grade outcome
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*
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* @return int
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*/
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public function get_item_uses_count() {
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global $DB;
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return $DB->count_records('grade_items', array('outcomeid' => $this->id));
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}
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/**
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* Computes then returns extra information about this outcome and other objects that are linked to it.
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* The average of all grades that use this outcome, for all courses (or 1 course if courseid is given) can
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* be requested, and is returned as a float if requested alone. If the list of items that use this outcome
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* is also requested, then a single array is returned, which contains the grade_items AND the average grade
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* if such is still requested (array('items' => array(...), 'avg' => 2.30)). This combining of two
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* methods into one is to save on DB queries, since both queries are similar and can be performed together.
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*
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* @param int $courseid An optional courseid to narrow down the average to 1 course only
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* @param bool $average Whether or not to return the average grade for this outcome
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* @param bool $items Whether or not to return the list of items using this outcome
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* @return float
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*/
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public function get_grade_info($courseid=null, $average=true, $items=false) {
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global $CFG, $DB;
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if (!isset($this->id)) {
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debugging("You must setup the outcome's id before calling its get_grade_info() method!");
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return false; // id must be defined for this to work
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}
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if ($average === false && $items === false) {
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debugging('Either the 1st or 2nd param of grade_outcome::get_grade_info() must be true, or both, but not both false!');
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return false;
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}
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$params = array($this->id);
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$wheresql = '';
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if (!is_null($courseid)) {
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$wheresql = " AND {grade_items}.courseid = ? ";
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$params[] = $courseid;
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}
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$selectadd = '';
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if ($items !== false) {
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$selectadd = ", {grade_items}.* ";
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}
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$sql = "SELECT finalgrade $selectadd
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FROM {grade_grades}, {grade_items}, {grade_outcomes}
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WHERE {grade_outcomes}.id = {grade_items}.outcomeid
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AND {grade_items}.id = {grade_grades}.itemid
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AND {grade_outcomes}.id = ?
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$wheresql";
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$grades = $DB->get_records_sql($sql, $params);
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$retval = array();
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if ($average !== false && count($grades) > 0) {
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$count = 0;
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$total = 0;
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foreach ($grades as $k => $grade) {
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// Skip null finalgrades
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if (!is_null($grade->finalgrade)) {
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$total += $grade->finalgrade;
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$count++;
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}
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unset($grades[$k]->finalgrade);
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}
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$retval['avg'] = $total / $count;
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}
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if ($items !== false) {
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foreach ($grades as $grade) {
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$retval['items'][$grade->id] = new grade_item($grade);
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}
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}
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return $retval;
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}
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}
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