grade/edit/tree/calculation_form.php

   1 <?php  //$Id$
   2
   3 require_once $CFG->libdir.'/formslib.php';
   4
   5 class edit_calculation_form extends moodleform {
   6     function definition() {
   7         global $COURSE;
   8
   9         $mform =& $this->_form;
  10
  11 /// visible elements
  12         $mform->addElement('header', 'general', get_string('gradeitem', 'grades'));
  13
  14         $mform->addElement('static', 'itemname', get_string('itemname', 'grades'));
  15         $mform->addElement('text', 'calculation', get_string('calculation', 'grades'));
  16
  17 /// hidden params
  18         $mform->addElement('hidden', 'id', 0);
  19         $mform->setType('id', PARAM_INT);
  20
  21         $mform->addElement('hidden', 'courseid', 0);
  22         $mform->setType('courseid', PARAM_INT);
  23
  24 /// add return tracking info
  25         $gpr = $this->_customdata['gpr'];
  26         $gpr->add_mform_elements($mform);
  27
  28 //-------------------------------------------------------------------------------
  29         // buttons
  30         $this->add_action_buttons();
  31     }
  32
  33 /// perform extra validation before submission
  34     function validation($data){
  35         $errors= array();
  36
  37         if ($data['calculation'] != '') {
  38             $grade_item = grade_item::fetch(array('id'=>$data['id'], 'courseid'=>$data['courseid']));
  39             $result = $grade_item->validate_formula($data['calculation']);
  40             if ($result !== true) {
  41                 $errors['calculation'] = $result;
  42             }
  43         }
  44         if (0 == count($errors)){
  45             return true;
  46         } else {
  47             return $errors;
  48         }
  49     }
  50
  51 }
  52 ?>