grade/edit/scale/edit_form.php

   1 <?php  //$Id$
   2
   3 ///////////////////////////////////////////////////////////////////////////
   4 //                                                                       //
   5 // NOTICE OF COPYRIGHT                                                   //
   6 //                                                                       //
   7 // Moodle - Modular Object-Oriented Dynamic Learning Environment         //
   8 //          http://moodle.com                                            //
   9 //                                                                       //
  10 // Copyright (C) 1999 onwards  Martin Dougiamas  http://moodle.com       //
  11 //                                                                       //
  12 // This program is free software; you can redistribute it and/or modify  //
  13 // it under the terms of the GNU General Public License as published by  //
  14 // the Free Software Foundation; either version 2 of the License, or     //
  15 // (at your option) any later version.                                   //
  16 //                                                                       //
  17 // This program is distributed in the hope that it will be useful,       //
  18 // but WITHOUT ANY WARRANTY; without even the implied warranty of        //
  19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
  20 // GNU General Public License for more details:                          //
  21 //                                                                       //
  22 //          http://www.gnu.org/copyleft/gpl.html                         //
  23 //                                                                       //
  24 ///////////////////////////////////////////////////////////////////////////
  25
  26 require_once $CFG->libdir.'/formslib.php';
  27
  28 class edit_scale_form extends moodleform {
  29     function definition() {
  30         global $CFG;
  31         $mform =& $this->_form;
  32
  33         // visible elements
  34         $mform->addElement('header', 'general', get_string('scale'));
  35
  36         $mform->addElement('text', 'name', get_string('name'), 'size="40"');
  37         $mform->addRule('name', get_string('required'), 'required', null, 'client');
  38         $mform->setType('name', PARAM_TEXT);
  39
  40         $mform->addElement('advcheckbox', 'standard', get_string('scalestandard'));
  41         $mform->setHelpButton('standard', array('scalestandard', get_string('scalestandard'), 'grade'));
  42
  43         $mform->addElement('static', 'used', get_string('used'));
  44
  45         $mform->addElement('textarea', 'scale', get_string('scale'), array('cols'=>50, 'rows'=>2));
  46         $mform->setHelpButton('scale', array('scales', get_string('scale')));
  47         $mform->addRule('scale', get_string('required'), 'required', null, 'client');
  48         $mform->setType('scale', PARAM_TEXT);
  49
  50         $mform->addElement('htmleditor', 'description', get_string('description'), array('cols'=>80, 'rows'=>20));
  51
  52
  53         // hidden params
  54         $mform->addElement('hidden', 'id', 0);
  55         $mform->setType('id', PARAM_INT);
  56
  57         $mform->addElement('hidden', 'courseid', 0);
  58         $mform->setType('courseid', PARAM_INT);
  59
  60 /// add return tracking info
  61         $gpr = $this->_customdata['gpr'];
  62         $gpr->add_mform_elements($mform);
  63
  64 //-------------------------------------------------------------------------------
  65         // buttons
  66         $this->add_action_buttons();
  67     }
  68
  69
  70 /// tweak the form - depending on existing data
  71     function definition_after_data() {
  72         global $CFG;
  73
  74         $mform =& $this->_form;
  75
  76         $courseid = $mform->getElementValue('courseid');
  77
  78         if ($id = $mform->getElementValue('id')) {
  79             $scale = grade_scale::fetch(array('id'=>$id));
  80             $used = $scale->is_used();
  81
  82             if ($used) {
  83                 $mform->hardFreeze('scale');
  84             }
  85
  86             if (empty($courseid)) {
  87                 $mform->hardFreeze('standard');
  88
  89             } else if (empty($scale->courseid) and !has_capability('moodle/course:managescales', get_context_instance(CONTEXT_SYSTEM))) {
  90                 $mform->hardFreeze('standard');
  91
  92             } else if ($used and !empty($scale->courseid)) {
  93                 $mform->hardFreeze('standard');
  94             }
  95
  96             $usedstr = $scale->is_used() ? get_string('yes') : get_string('no');
  97             $used_el =& $mform->getElement('used');
  98             $used_el->setValue($usedstr);
  99
 100         } else {
 101             $mform->removeElement('used');
 102             if (empty($courseid) or !has_capability('moodle/course:managescales', get_context_instance(CONTEXT_SYSTEM))) {
 103                 $mform->hardFreeze('standard');
 104             }
 105         }
 106     }
 107
 108 /// perform extra validation before submission
 109     function validation($data, $files) {
 110         global $CFG, $COURSE;
 111
 112         $errors = parent::validation($data, $files);
 113
 114         // we can not allow 2 scales with the same exact scale as this creates
 115         // problems for backup/restore
 116
 117         $old = grade_scale::fetch(array('id'=>$data['id']));
 118
 119         if (array_key_exists('standard', $data)) {
 120             if (empty($data['standard'])) {
 121                 $courseid = $COURSE->id;
 122             } else {
 123                 $courseid = 0;
 124             }
 125
 126         } else {
 127             $courseid = $old->courseid;
 128         }
 129
 130         if (array_key_exists('scale', $data)) {
 131             $count = count_records('scale', 'courseid', $courseid, 'scale', $data['scale']);
 132
 133             if (empty($old->id) or $old->courseid != $courseid) {
 134                 if ($count) {
 135                     $errors['scale'] = get_string('duplicatescale', 'grades');
 136                 }
 137
 138             } else if ($old->scale != $data['scale']) {
 139                 if ($count) {
 140                     $errors['scale'] = get_string('duplicatescale', 'grades');
 141                 }
 142             }
 143
 144             $options = explode(',', $data['scale']);
 145             if (count($options) < 2) {
 146                 $errors['scale'] = get_string('error');
 147             }
 148         }
 149
 150         return $errors;
 151     }
 152 }
 153
 154 ?>