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.
/**
* A moodleform to allow the editing of a calculated grade item
*
* @package core_grades
* @copyright 2007 Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
if (!defined('MOODLE_INTERNAL')) {
die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page
}
require_once $CFG->libdir.'/formslib.php';
class edit_calculation_form extends moodleform {
public $available;
public $noidnumbers;
function definition() {
global $COURSE;
$mform =& $this->_form;
$itemid = $this->_customdata['itemid'];
$this->available = grade_item::fetch_all(array('courseid'=>$COURSE->id));
$this->noidnumbers = array();
// All items that have no idnumbers are added to a separate section of the form (hidden by default),
// enabling the user to assign idnumbers to these grade_items.
foreach ($this->available as $item) {
if (empty($item->idnumber)) {
$this->noidnumbers[$item->id] = $item;
unset($this->available[$item->id]);
}
if ($item->id == $itemid) { // Do not include the current grade_item in the available section
unset($this->available[$item->id]);
}
}
/// visible elements
$mform->addElement('header', 'general', get_string('gradeitem', 'grades'));
$mform->addElement('static', 'itemname', get_string('itemname', 'grades'));
$mform->addElement('textarea', 'calculation', get_string('calculation', 'grades'), 'cols="60" rows="5"');
$mform->addHelpButton('calculation', 'calculation', 'grades');
$mform->setForceLtr('calculation');
/// hidden params
$mform->addElement('hidden', 'id', 0);
$mform->setType('id', PARAM_INT);
$mform->addElement('hidden', 'courseid', 0);
$mform->setType('courseid', PARAM_INT);
$mform->addElement('hidden', 'section', 0);
$mform->setType('section', PARAM_ALPHA);
$mform->setDefault('section', 'calculation');
/// add return tracking info
$gpr = $this->_customdata['gpr'];
$gpr->add_mform_elements($mform);
$this->add_action_buttons();
}
function definition_after_data() {
global $CFG, $COURSE;
$mform =& $this->_form;
}
/// perform extra validation before submission
function validation($data, $files) {
$errors = parent::validation($data, $files);
$mform =& $this->_form;
// check the calculation formula
if ($data['calculation'] != '') {
$grade_item = grade_item::fetch(array('id'=>$data['id'], 'courseid'=>$data['courseid']));
$calculation = calc_formula::unlocalize(stripslashes($data['calculation']));
$result = $grade_item->validate_formula($calculation);
if ($result !== true) {
$errors['calculation'] = $result;
}
}
return $errors;
}
}