9413d65ee0
The images were not loading in the filemanager. This meant that when the element was saved the images would be deleted for that course, affecting existing image elements as well.
325 lines
12 KiB
PHP
325 lines
12 KiB
PHP
<?php
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// This file is part of the customcert module for 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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defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
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require_once($CFG->dirroot . '/mod/customcert/element/element.class.php');
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require_once($CFG->libdir . '/grade/constants.php');
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require_once($CFG->dirroot . '/grade/lib.php');
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require_once($CFG->dirroot . '/grade/querylib.php');
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/**
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* Grade - Course
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*/
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define('CUSTOMCERT_GRADE_COURSE', '0');
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/**
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* The customcert element grade's core interaction API.
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*
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* @package customcertelement_grade
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* @copyright 2013 Mark Nelson <markn@moodle.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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class customcert_element_grade extends customcert_element_base {
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/**
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* This function renders the form elements when adding a customcert element.
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*
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* @param mod_customcert_edit_element_form $mform the edit_form instance
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*/
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public function render_form_elements($mform) {
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// Get the grade items we can display.
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$gradeitems = array();
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$gradeitems[CUSTOMCERT_GRADE_COURSE] = get_string('coursegrade', 'customcertelement_grade');
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$gradeitems = $gradeitems + self::get_grade_items();
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// The grade items.
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$mform->addElement('select', 'gradeitem', get_string('gradeitem', 'customcertelement_grade'), $gradeitems);
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$mform->setType('gradeitem', PARAM_INT);
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$mform->addHelpButton('gradeitem', 'gradeitem', 'customcertelement_grade');
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// The grade format.
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$mform->addElement('select', 'gradeformat', get_string('gradeformat', 'customcertelement_grade'), self::get_grade_format_options());
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$mform->setType('gradeformat', PARAM_INT);
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$mform->addHelpButton('gradeformat', 'gradeformat', 'customcertelement_grade');
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parent::render_form_elements($mform);
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}
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/**
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* This will handle how form data will be saved into the data column in the
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* customcert_elements table.
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*
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* @param stdClass $data the form data.
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* @return string the json encoded array
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*/
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public function save_unique_data($data) {
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// Array of data we will be storing in the database.
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$arrtostore = array(
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'gradeitem' => $data->gradeitem,
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'gradeformat' => $data->gradeformat
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);
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// Encode these variables before saving into the DB.
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return json_encode($arrtostore);
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}
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/**
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* Handles rendering the element on the pdf.
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*
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* @param pdf $pdf the pdf object
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* @param bool $preview true if it is a preview, false otherwise
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*/
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public function render($pdf, $preview) {
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global $COURSE, $USER;
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// If there is no element data, we have nothing to display.
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if (empty($this->element->data)) {
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return;
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}
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// Decode the information stored in the database.
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$gradeinfo = json_decode($this->element->data);
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// If we are previewing this certificate then just show a demonstration grade.
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if ($preview) {
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$courseitem = grade_item::fetch_course_item($COURSE->id);
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$grade = grade_format_gradevalue('100', $courseitem, true, $gradeinfo->gradeformat, 2);
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} else {
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// Get the grade for the grade item.
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$grade = self::get_grade($gradeinfo, $USER->id);
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}
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parent::render_content($pdf, $grade);
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}
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/**
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* Render the element in html.
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*
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* This function is used to render the element when we are using the
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* drag and drop interface to position it.
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*/
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public function render_html() {
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global $COURSE;
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// If there is no element data, we have nothing to display.
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if (empty($this->element->data)) {
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return;
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}
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// Decode the information stored in the database.
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$gradeinfo = json_decode($this->element->data);
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$courseitem = grade_item::fetch_course_item($COURSE->id);
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// Define how many decimals to display.
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$decimals = 2;
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if ($gradeinfo->gradeformat == GRADE_DISPLAY_TYPE_PERCENTAGE) {
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$decimals = 0;
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}
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$grade = grade_format_gradevalue('100', $courseitem, true, $gradeinfo->gradeformat, $decimals);
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return parent::render_html_content($grade);
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}
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/**
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* Sets the data on the form when editing an element.
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*
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* @param mod_customcert_edit_element_form $mform the edit_form instance
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*/
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public function definition_after_data($mform) {
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// Set the item and format for this element.
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if (!empty($this->element->data)) {
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$gradeinfo = json_decode($this->element->data);
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$this->element->gradeitem = $gradeinfo->gradeitem;
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$this->element->gradeformat = $gradeinfo->gradeformat;
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}
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parent::definition_after_data($mform);
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}
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/**
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* This function is responsible for handling the restoration process of the element.
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*
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* We will want to update the course module the grade element is pointing to as it will
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* have changed in the course restore.
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*
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* @param restore_customcert_activity_task $restore
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*/
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public function after_restore($restore) {
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global $DB;
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$gradeinfo = json_decode($this->element->data);
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if ($newitem = restore_dbops::get_backup_ids_record($restore->get_restoreid(), 'course_module', $gradeinfo->gradeitem)) {
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$gradeinfo->gradeitem = $newitem->newitemid;
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$DB->set_field('customcert_elements', 'data', self::save_unique_data($gradeinfo), array('id' => $this->element->id));
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}
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}
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/**
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* Helper function to return all the grades items for this course.
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*
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* @return array the array of gradeable items in the course
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*/
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public static function get_grade_items() {
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global $COURSE, $DB;
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// Array to store the grade items.
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$modules = array();
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// Collect course modules data.
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$modinfo = get_fast_modinfo($COURSE);
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$mods = $modinfo->get_cms();
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$sections = $modinfo->get_section_info_all();
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// Create the section label depending on course format.
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switch ($COURSE->format) {
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case 'topics':
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$sectionlabel = get_string('topic');
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break;
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case 'weeks':
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$sectionlabel = get_string('week');
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break;
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default:
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$sectionlabel = get_string('section');
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break;
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}
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// Loop through each course section.
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for ($i = 0; $i <= count($sections) - 1; $i++) {
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// Confirm the index exists, should always be true.
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if (isset($sections[$i])) {
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// Get the individual section.
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$section = $sections[$i];
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// Get the mods for this section.
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$sectionmods = explode(",", $section->sequence);
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// Loop through the section mods.
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foreach ($sectionmods as $sectionmod) {
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// Should never happen unless DB is borked.
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if (empty($mods[$sectionmod])) {
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continue;
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}
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$mod = $mods[$sectionmod];
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$instance = $DB->get_record($mod->modname, array('id' => $mod->instance));
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// Get the grade items for this activity.
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if ($gradeitems = grade_get_grade_items_for_activity($mod)) {
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$moditem = grade_get_grades($COURSE->id, 'mod', $mod->modname, $mod->instance);
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$gradeitem = reset($moditem->items);
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if (isset($gradeitem->grademax)) {
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$modules[$mod->id] = $sectionlabel . ' ' . $section->section . ' : ' . $instance->name;
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}
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}
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}
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}
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}
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return $modules;
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}
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/**
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* Helper function to return all the possible grade formats.
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*
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* @return array returns an array of grade formats
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*/
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public static function get_grade_format_options() {
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$gradeformat = array();
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$gradeformat[GRADE_DISPLAY_TYPE_REAL] = get_string('gradepoints', 'customcertelement_grade');
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$gradeformat[GRADE_DISPLAY_TYPE_PERCENTAGE] = get_string('gradepercent', 'customcertelement_grade');
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$gradeformat[GRADE_DISPLAY_TYPE_LETTER] = get_string('gradeletter', 'customcertelement_grade');
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return $gradeformat;
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}
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/**
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* Helper function to return the grade to display.
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*
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* @param stdClass $gradeinfo
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* @param int $userid
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* @return string the grade result
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*/
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public static function get_grade($gradeinfo, $userid) {
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global $COURSE;
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// Get the grade information.
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$gradeitem = $gradeinfo->gradeitem;
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$gradeformat = $gradeinfo->gradeformat;
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// Check if we are displaying the course grade.
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if ($gradeitem == CUSTOMCERT_GRADE_COURSE) {
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if ($courseitem = grade_item::fetch_course_item($COURSE->id)) {
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// Set the grade type we want.
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$courseitem->gradetype = GRADE_TYPE_VALUE;
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$grade = new grade_grade(array('itemid' => $courseitem->id, 'userid' => $userid));
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$coursegrade = grade_format_gradevalue($grade->finalgrade, $courseitem, true, $gradeformat, 2);
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return $coursegrade;
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}
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} else { // Get the module grade.
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if ($modinfo = self::get_mod_grade($gradeitem, $gradeformat, $userid)) {
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return $modinfo->gradetodisplay;
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}
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}
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// Only gets here if no grade was retrieved from the DB.
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return '';
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}
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/**
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* Helper function to return the grade the user achieved for a specified module.
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*
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* @param int $moduleid
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* @param int $gradeformat
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* @param int $userid
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* @return stdClass the grade information
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*/
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public static function get_mod_grade($moduleid, $gradeformat, $userid) {
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global $DB;
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$cm = $DB->get_record('course_modules', array('id' => $moduleid), '*', MUST_EXIST);
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$module = $DB->get_record('modules', array('id' => $cm->module), '*', MUST_EXIST);
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$gradeitem = grade_get_grades($cm->course, 'mod', $module->name, $cm->instance, $userid);
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if (!empty($gradeitem)) {
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$item = new grade_item();
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$item->gradetype = GRADE_TYPE_VALUE;
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$item->courseid = $cm->course;
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$itemproperties = reset($gradeitem->items);
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foreach ($itemproperties as $key => $value) {
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$item->$key = $value;
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}
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// Grade for the user.
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$grade = $item->grades[$userid]->grade;
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// Define how many decimals to display.
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$decimals = 2;
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if ($gradeformat == GRADE_DISPLAY_TYPE_PERCENTAGE) {
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$decimals = 0;
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}
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// Create the object we will be returning.
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$modinfo = new stdClass;
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$modinfo->name = $DB->get_field($module->name, 'name', array('id' => $cm->instance));
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$modinfo->gradetodisplay = grade_format_gradevalue($grade, $item, true, $gradeformat, $decimals);
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if ($grade) {
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$modinfo->dategraded = $item->grades[$userid]->dategraded;
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} else {
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$modinfo->dategraded = time();
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}
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return $modinfo;
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}
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return false;
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}
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}
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