mod_publication_grantextension_form.php

<?php
// This file is part of mod_publication for Moodle - http://moodle.org/
//
// It 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.
//
// It 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
// If not, see <http://www.gnu.org/licenses/>.

/**
 * mod_publication_grantextension_form.php
 *
 * @package       mod_publication
 * @author        Andreas Hruska (andreas.hruska@tuwien.ac.at)
 * @author        Katarzyna Potocka (katarzyna.potocka@tuwien.ac.at)
 * @author        Andreas Windbichler
 * @copyright     2014 Academic Moodle Cooperation {@link http://www.academic-moodle-cooperation.org}
 * @license       http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->dirroot.'/course/moodleform_mod.php');
require_once($CFG->dirroot.'/mod/publication/locallib.php');

/**
 * Form for granting extensions
 * 
 * @package mod_publication
 * @author Andreas Windbichler
 */
class mod_publication_grantextension_form extends moodleform {
	private $instance;
	
	public function definition(){
		global $CFG, $OUTPUT, $DB, $USER;
		
		$publication = &$this->_customdata['publication'];
		$this->instance = $publication->get_instance();
		$userids = &$this->_customdata['userids'];
		
		$mform = $this->_form;
	
		if($publication->get_instance()->allowsubmissionsfromdate){
			$mform->addElement('static','fromdate',
					get_string('allowsubmissionsfromdate', 'publication'), userdate($publication->get_instance()->allowsubmissionsfromdate));
		}
		
		if($publication->get_instance()->duedate){
			$mform->addElement('static','duedate',
					get_string('duedate', 'publication'), userdate($publication->get_instance()->duedate));
			$finaldate = $publication->get_instance()->duedate;
		}
		
		if($publication->get_instance()->cutoffdate){
			$mform->addElement('static','cutoffdate',
					get_string('cutoffdate', 'publication'), userdate($publication->get_instance()->cutoffdate));
			$finaldate = $publication->get_instance()->cutoffdate;
		}
		
		$mform->addElement('date_time_selector', 'extensionduedate',
				get_string('extensionduedate', 'publication'), array('optional'=>true));
		$mform->setDefault('extensionduedate', $finaldate);

		
		if(count($userids) == 1){
			$extensionduedate = $publication->user_extensionduedate($userids[0]);
			if($extensionduedate){
				$mform->setDefault('extensionduedate', $extensionduedate);
			}
		}
		
		$mform->addElement('hidden', 'id', $publication->get_coursemodule()->id);
		$mform->setType('id', PARAM_INT);
		
		foreach($userids as $idx => $userid){
			$mform->addElement('hidden', 'userids[' . $idx . ']', $userid);
			$mform->setType('userids[' . $idx . ']', PARAM_INT);
		}
		
		$this->add_action_buttons(true, get_string('save_changes', 'publication'));
		
	}
	
	/**
	 * Perform validation on the extension form
	 * @param array $data
	 * @param array $files
	 */
	public function validation($data, $files) {
		$errors = parent::validation($data, $files);
		if ($this->instance->duedate && $data['extensionduedate']) {
			if ($this->instance->duedate > $data['extensionduedate']) {
				$errors['extensionduedate'] = get_string('extensionnotafterduedate', 'publication');
			}
		}
		if ($this->instance->allowsubmissionsfromdate && $data['extensionduedate']) {
			if ($this->instance->allowsubmissionsfromdate > $data['extensionduedate']) {
				$errors['extensionduedate'] = get_string('extensionnotafterfromdate', 'publication');
			}
		}
	
		return $errors;
	}
}