moodle-mod_htmlcert/element/teachername/lib.php
2013-07-25 13:08:17 +08:00

100 lines
3.4 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/>.
defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
require_once($CFG->dirroot . '/mod/customcert/element/element.class.php');
/**
* The customcert element teachername's core interaction API.
*
* @package customcertelement_teachername
* @copyright 2013 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class customcert_element_teachername extends customcert_element_base {
/**
* This function renders the form elements when adding a customcert element.
*
* @param mod_customcert_edit_element_form $mform the edit_form instance
*/
public function render_form_elements($mform) {
$mform->addElement('select', 'teacher', get_string('teacher', 'customcertelement_teachername'),
$this->get_list_of_teachers());
$mform->addHelpButton('teacher', 'teacher', 'customcertelement_teachername');
parent::render_form_elements($mform);
}
/**
* This will handle how form data will be saved into the data column in the
* customcert_elements table.
*
* @param stdClass $data the form data
* @return string the text
*/
public function save_unique_data($data) {
return $data->teacher;
}
/**
* Handles rendering the element on the pdf.
*
* @param pdf $pdf the pdf object
* @param bool $preview true if it is a preview, false otherwise
*/
public function render($pdf, $preview) {
global $DB;
$teacher = $DB->get_record('user', array('id' => $this->element->data), 'id, firstname, lastname');
$teachername = fullname($teacher);
parent::render_content($pdf, $teachername);
}
/**
* Helper function to return the teachers for this course.
*
* @return array the list of teachers
*/
private function get_list_of_teachers() {
// When editing this element the cmid will be present in the URL.
$cmid = required_param('cmid', PARAM_INT);
// The list of teachers to return.
$teachers = array();
// Now return all users who can manage the customcert in this context.
if ($users = get_users_by_capability(context_module::instance($cmid), 'mod/customcert:manage', 'u.id, u.firstname, u.lastname')) {
foreach ($users as $user) {
$teachers[$user->id] = fullname($user);
}
}
return $teachers;
}
/**
* Sets the data on the form when editing an element.
*
* @param mod_customcert_edit_element_form $mform the edit_form instance
*/
public function definition_after_data($mform) {
$this->element->teacher = $this->element->data;
parent::definition_after_data($mform);
}
}