grade/edit/scale/edit_form.php

   1 <?php  //$Id$
   2
   3 require_once $CFG->libdir.'/formslib.php';
   4
   5 class edit_scale_form extends moodleform {
   6     function definition() {
   7         global $CFG;
   8         $mform =& $this->_form;
   9
  10         // visible elements
  11         $mform->addElement('header', 'general', get_string('scale'));
  12
  13         $mform->addElement('text', 'name', get_string('name'), 'size="40"');
  14         $mform->addRule('name', get_string('required'), 'required', null, 'client');
  15         $mform->setType('name', PARAM_TEXT);
  16
  17         $mform->addElement('advcheckbox', 'standard', get_string('scalestandard'));
  18
  19         $mform->addElement('static', 'activities', get_string('activities'));
  20
  21         $mform->addElement('textarea', 'scale', get_string('scale'), array('cols'=>50, 'rows'=>2));
  22         $mform->addRule('scale', get_string('required'), 'required', null, 'client');
  23         $mform->setType('scale', PARAM_TEXT);
  24
  25         $mform->addElement('htmleditor', 'description', get_string('description'), array('cols'=>80, 'rows'=>20));
  26
  27
  28         // hidden params
  29         $mform->addElement('hidden', 'id', 0);
  30         $mform->setType('id', PARAM_INT);
  31
  32         $mform->addElement('hidden', 'courseid', 0);
  33         $mform->setType('courseid', PARAM_INT);
  34
  35 /// add return tracking info
  36         $gpr = $this->_customdata['gpr'];
  37         $gpr->add_mform_elements($mform);
  38
  39 //-------------------------------------------------------------------------------
  40         // buttons
  41         $this->add_action_buttons();
  42     }
  43
  44
  45 /// tweak the form - depending on existing data
  46     function definition_after_data() {
  47         global $CFG;
  48
  49         $mform =& $this->_form;
  50
  51         $courseid = $mform->getElementValue('courseid');
  52
  53         if ($id = $mform->getElementValue('id')) {
  54             $scale = grade_scale::fetch(array('id'=>$id));
  55             $count = $scale->get_item_uses_count();
  56
  57             if ($count) {
  58                 $mform->hardFreeze('scale');
  59             }
  60
  61             if (empty($courseid)) {
  62                 $mform->hardFreeze('standard');
  63
  64             } else if (empty($scale->courseid) and !has_capability('moodle/course:managescales', get_context_instance(CONTEXT_SYSTEM))) {
  65                 $mform->hardFreeze('standard');
  66
  67             } else if ($count and !empty($scale->courseid)) {
  68                 $mform->hardFreeze('standard');
  69             }
  70
  71             $activities_el =& $mform->getElement('activities');
  72             $activities_el->setValue(get_string('usedinnplaces', '', $count));
  73
  74         } else {
  75             $mform->removeElement('activities');
  76             if (empty($courseid) or !has_capability('moodle/course:managescales', get_context_instance(CONTEXT_SYSTEM))) {
  77                 $mform->hardFreeze('standard');
  78             }
  79         }
  80     }
  81
  82 /// perform extra validation before submission
  83     function validation($data){
  84
  85         global $CFG;
  86
  87         $errors= array();
  88
  89         // we can not allow 2 scales with the same exact scale as this creates
  90         // problems for backup/restore
  91         $courseid = empty($data['courseid'])?0:$data['courseid'];
  92         if (count_records('scale', 'courseid', $courseid, 'scale', $data['scale'])) {
  93             $errors['scale'] = get_string('duplicatescale', 'grades');
  94         }
  95
  96         $options = explode(',', $data['scale']);
  97         if (count($options) < 2) {
  98             $errors['scale'] = get_string('error');
  99         }
 100
 101         if (0 == count($errors)){
 102             return true;
 103         } else {
 104             return $errors;
 105         }
 106     }
 107 }
 108
 109 ?>