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📄 edit.php(5.54 KB)
📄 edit_form.php(5.95 KB)
📄 index.php(7 KB)

Editing: edit_form.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Edit form for grade scales
 *
 * @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_scale_form extends moodleform {
    function definition() {
        global $CFG;
        $mform =& $this->_form;

// visible elements
        $mform->addElement('header', 'general', get_string('scale'));

$mform->addElement('text', 'name', get_string('name'), 'size="40"');
        $mform->addRule('name', get_string('required'), 'required', null, 'client');
        $mform->setType('name', PARAM_TEXT);

$mform->addElement('advcheckbox', 'standard', get_string('scalestandard'));
        $mform->addHelpButton('standard', 'scalestandard');

$mform->addElement('static', 'used', get_string('used'));

$mform->addElement('textarea', 'scale', get_string('scale'), array('cols'=>50, 'rows'=>2));
        $mform->addHelpButton('scale', 'scale');
        $mform->addRule('scale', get_string('required'), 'required', null, 'client');
        $mform->setType('scale', PARAM_TEXT);

$mform->addElement('editor', 'description_editor', get_string('description'), null, $this->_customdata['editoroptions']);

// hidden params
        $mform->addElement('hidden', 'id', 0);
        $mform->setType('id', PARAM_INT);

$mform->addElement('hidden', 'courseid', 0);
        $mform->setType('courseid', PARAM_INT);

/// add return tracking info
        $gpr = $this->_customdata['gpr'];
        $gpr->add_mform_elements($mform);

//-------------------------------------------------------------------------------
        // buttons
        $this->add_action_buttons();
    }

/// tweak the form - depending on existing data
    function definition_after_data() {
        global $CFG;

$mform =& $this->_form;

$courseid = $mform->getElementValue('courseid');

if ($id = $mform->getElementValue('id')) {
            $scale = grade_scale::fetch(array('id'=>$id));
            $used = $scale->is_used();

if ($used) {
                $mform->hardFreeze('scale');
            }

if (empty($courseid)) {
                $mform->hardFreeze('standard');

} else if (!has_capability('moodle/course:managescales', context_system::instance())) {
                //if they dont have managescales at system level the shouldnt be allowed to make scales standard (or not standard)
                $mform->hardFreeze('standard');

} else if ($used and !empty($scale->courseid)) {
                $mform->hardFreeze('standard');
            }

$usedstr = $scale->is_used() ? get_string('yes') : get_string('no');
            $used_el =& $mform->getElement('used');
            $used_el->setValue($usedstr);

} else {
            $mform->removeElement('used');
            if (empty($courseid) or !has_capability('moodle/course:managescales', context_system::instance())) {
                $mform->hardFreeze('standard');
            }
        }
    }

/// perform extra validation before submission
    function validation($data, $files) {
        global $CFG, $COURSE, $DB;

$errors = parent::validation($data, $files);

// we can not allow 2 scales with the same exact scale as this creates
        // problems for backup/restore

$old = grade_scale::fetch(array('id'=>$data['id']));

if (array_key_exists('standard', $data)) {
            if (empty($data['standard'])) {
                $courseid = $COURSE->id;
            } else {
                $courseid = 0;
            }

} else {
            $courseid = $old->courseid;
        }

if (array_key_exists('scale', $data)) {
            $scalearray = explode(',', $data['scale']);
            $scalearray = array_map('trim', $scalearray);
            $scaleoptioncount = count($scalearray);

if (count($scalearray) < 1) {
                $errors['scale'] = get_string('badlyformattedscale', 'grades');
            } else {
                $thescale = implode(',',$scalearray);

//this check strips out whitespace from the scale we're validating but not from those already in the DB
                $count = $DB->count_records_select('scale', "courseid=:courseid AND ".$DB->sql_compare_text('scale', core_text::strlen($thescale)).'=:scale',
                    array('courseid'=>$courseid, 'scale'=>$thescale));

if ($count) {
                    //if this is a new scale but we found a duplice in the DB
                    //or we found a duplicate in another course report the error
                    if (empty($old->id) or $old->courseid != $courseid) {
                        $errors['scale'] = get_string('duplicatescale', 'grades');
                    } else if ($old->scale !== $thescale and $old->scale !== $data['scale']) {
                        //if the old scale from DB is different but we found a duplicate then we're trying to modify a scale to be a duplicate
                        $errors['scale'] = get_string('duplicatescale', 'grades');
                    }
                }
            }
        }

return $errors;
    }
}

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