moodle-mod-customcert/elements/grade/lib.php
2013-03-13 18:06:01 -07:00

189 lines
6.5 KiB
PHP

<?php
// This file is part of the customcert module for Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* The grade elements core interaction API.
*
* @package customcertelement_grade
* @copyright Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/mod/customcert/elements/element.class.php');
require_once($CFG->dirroot . '/grade/lib.php');
require_once($CFG->dirroot . '/grade/querylib.php');
class customcert_element_grade extends customcert_element_base {
/**
* Constructor.
*
* @param stdClass $element the element data
*/
function __construct($element) {
parent::__construct($element);
}
/**
* This function renders the form elements when adding a customcert element.
*
* @param stdClass $mform the edit_form instance.
*/
public function render_form_elements($mform) {
// The identifier.
$id = $this->element->id;
$gradeitem = '';
$gradeformat = '';
// Check if there is any data for this element.
if (!empty($this->element->data)) {
$gradeinfo = json_decode($this->element->data);
$gradeitem = $gradeinfo->gradeitem;
$gradeformat = $gradeinfo->gradeformat;
}
// The elements unique to this field.
$mform->addElement('select', 'gradeitem_' . $id, get_string('gradeitem', 'customcertelement_grade'), $this->get_grade_items());
$mform->addElement('select', 'gradeformat_' . $id, get_string('gradeformat', 'customcertelement_grade'), $this->get_grade_format_options());
parent::render_form_elements($mform);
$mform->setDefault('gradeitem_' . $id, $gradeitem);
$mform->setDefault('gradeformat_' . $id, $gradeformat);
// Add help buttons.
$mform->addHelpButton('gradeitem_' . $id, 'gradeitem', 'customcertelement_grade');
$mform->addHelpButton('gradeformat_' . $id, 'gradeformat', 'customcertelement_grade');
}
/**
* This will handle how form data will be saved into the data column in the
* customcert column.
*
* @param stdClass $data the form data.
* @return string the json encoded array
*/
public function save_unique_data($data) {
// The identifier.
$id = $this->element->id;
// Get the grade item and format from the form.
$gradeitem = 'gradeitem_' . $id;
$gradeitem = $data->$gradeitem;
$gradeformat = 'gradeformat_' . $id;
$gradeformat = $data->$gradeformat;
// Array of data we will be storing in the database.
$arrtostore = array(
'gradeitem' => $gradeitem,
'gradeformat' => $gradeformat
);
// Encode these variables before saving into the DB.
return json_encode($arrtostore);
}
/**
* Handles displaying the element on the pdf.
*
* @param $pdf the pdf object, see lib/pdflib.php
* @todo functionality missing, add when we start rendering the pdf
*/
public function display($pdf) {
global $USER;
// TO DO.
}
/**
* Helper function to return all the grades items for this course.
*
* @return array the array of gradeable items in the course
*/
public function get_grade_items() {
global $COURSE, $DB;
$strtopic = get_string("topic");
$strweek = get_string("week");
$strsection = get_string("section");
// Array to store the grade items.
$modules = array();
$modules['coursegrade'] = get_string('coursegrade', 'customcertelement_grade');
// Collect course modules data
$modinfo = get_fast_modinfo($COURSE);
$mods = $modinfo->get_cms();
$sections = $modinfo->get_section_info_all();
// Create the section label depending on course format.
switch ($COURSE->format) {
case "topics": $sectionlabel = $strtopic;
case "weeks": $sectionlabel = $strweek;
default: $sectionlabel = $strsection;
}
// Loop through each course section.
for ($i = 0; $i <= count($sections) - 1; $i++) {
// Confirm the index exists, should always be true.
if (isset($sections[$i])) {
// Get the individual section.
$section = $sections[$i];
// Get the mods for this section.
$sectionmods = explode(",", $section->sequence);
// Loop through the section mods.
foreach ($sectionmods as $sectionmod) {
// Should never happen unless DB is borked.
if (empty($mods[$sectionmod])) {
continue;
}
$mod = $mods[$sectionmod];
$mod->courseid = $COURSE->id;
$instance = $DB->get_record($mod->modname, array('id' => $mod->instance));
// Get the grade items for this activity.
if ($grade_items = grade_get_grade_items_for_activity($mod)) {
$mod_item = grade_get_grades($COURSE->id, 'mod', $mod->modname, $mod->instance);
$item = reset($mod_item->items);
if (isset($item->grademax)) {
$modules[$mod->id] = $sectionlabel . ' ' . $section->section . ' : ' . $instance->name;
}
}
}
}
}
return $modules;
}
/**
* Helper function to return all the possible grade formats.
*
* @return array returns an array of grade formats
*/
function get_grade_format_options() {
$gradeformat = array();
$gradeformat[1] = get_string('gradepercent', 'customcertelement_grade');
$gradeformat[2] = get_string('gradepoints', 'customcertelement_grade');
$gradeformat[3] = get_string('gradeletter', 'customcertelement_grade');
return $gradeformat;
}
}