mod/quiz/addrandomform.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Defines the Moodle forum used to add random questions to the quiz.
  19  *
  20  * @package   mod_quiz
  21  * @copyright 2008 Olli Savolainen
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 require_once($CFG->libdir.'/formslib.php');
  29
  30
  31 /**
  32  * The add random questions form.
  33  *
  34  * @copyright  1999 onwards Martin Dougiamas and others {@link http://moodle.com}
  35  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  36  */
  37 class quiz_add_random_form extends moodleform {
  38
  39     protected function definition() {
  40         global $CFG, $DB;
  41         $mform =& $this->_form;
  42         $mform->setDisableShortforms();
  43
  44         $contexts = $this->_customdata['contexts'];
  45         $usablecontexts = $contexts->having_cap('moodle/question:useall');
  46
  47         // Random from existing category section.
  48         $mform->addElement('header', 'categoryheader',
  49                 get_string('randomfromexistingcategory', 'quiz'));
  50
  51         $mform->addElement('questioncategory', 'category', get_string('category'),
  52                 array('contexts' => $usablecontexts, 'top' => false));
  53         $mform->setDefault('category', $this->_customdata['cat']);
  54
  55         $mform->addElement('checkbox', 'includesubcategories', '', get_string('recurse', 'quiz'));
  56
  57         $mform->addElement('select', 'numbertoadd', get_string('randomnumber', 'quiz'),
  58                 $this->get_number_of_questions_to_add_choices());
  59
  60         $mform->addElement('submit', 'existingcategory', get_string('addrandomquestion', 'quiz'));
  61
  62         // Random from a new category section.
  63         $mform->addElement('header', 'categoryheader',
  64                 get_string('randomquestionusinganewcategory', 'quiz'));
  65
  66         $mform->addElement('text', 'name', get_string('name'), 'maxlength="254" size="50"');
  67         $mform->setType('name', PARAM_TEXT);
  68
  69         $mform->addElement('questioncategory', 'parent', get_string('parentcategory', 'question'),
  70                 array('contexts' => $usablecontexts, 'top' => true));
  71         $mform->addHelpButton('parent', 'parentcategory', 'question');
  72
  73         $mform->addElement('submit', 'newcategory',
  74                 get_string('createcategoryandaddrandomquestion', 'quiz'));
  75
  76         // Cancel button.
  77         $mform->addElement('cancel');
  78         $mform->closeHeaderBefore('cancel');
  79
  80         $mform->addElement('hidden', 'addonpage', 0, 'id="rform_qpage"');
  81         $mform->setType('addonpage', PARAM_SEQUENCE);
  82         $mform->addElement('hidden', 'cmid', 0);
  83         $mform->setType('cmid', PARAM_INT);
  84         $mform->addElement('hidden', 'returnurl', 0);
  85         $mform->setType('returnurl', PARAM_LOCALURL);
  86     }
  87
  88     public function validation($fromform, $files) {
  89         $errors = parent::validation($fromform, $files);
  90
  91         if (!empty($fromform['newcategory']) && trim($fromform['name']) == '') {
  92             $errors['name'] = get_string('categorynamecantbeblank', 'question');
  93         }
  94
  95         return $errors;
  96     }
  97
  98     /**
  99      * Return an arbitrary array for the dropdown menu
 100      * @return array of integers array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
 101      */
 102     private function get_number_of_questions_to_add_choices() {
 103         $maxrand = 100;
 104         $randomcount = array();
 105         for ($i = 1; $i <= min(10, $maxrand); $i++) {
 106             $randomcount[$i] = $i;
 107         }
 108         for ($i = 20; $i <= min(100, $maxrand); $i += 10) {
 109             $randomcount[$i] = $i;
 110         }
 111         return $randomcount;
 112     }
 113 }