Proyectos de Subversion Moodle

<?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/>.

/**

 * The form class for editing questions.

 * @package mod_questionnaire

 * @copyright  2016 Mike Churchward (mike.churchward@poetgroup.org)

 * @author Mike Churchward & Joseph Rézeau

 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License

 */

namespace mod_questionnaire;

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir . '/formslib.php');

/**

 * Class edit_question_form

 * @package mod_questionnaire

 * @property \MoodleQuickForm _form

 * @property array _customdata

 */

class edit_question_form extends \moodleform {

    /**

     * Form definition.

     */

    public function definition() {

        // TODO - Find a way to not use globals. Maybe the base class allows more parameters to be passed?

        global $questionnaire, $question, $SESSION;

        // TODO - Is there a better way to do this without session global?

        // The 'sticky' required response value for further new questions.

        if (isset($SESSION->questionnaire->required) && !isset($question->qid)) {

            $question->required = $SESSION->questionnaire->required;

        }

        if (!isset($question->type_id)) {

            throw new \moodle_exception('undefinedquestiontype', 'mod_questionnaire');

        }

        // Each question can provide its own form elements to the provided form, or use the default ones.

        if (!$question->edit_form($this, $questionnaire)) {

            throw new \moodle_exception('Question type had an unknown error in the edit_form method.', 'mod_questionnaire');

        }

    }

    /**

     * Form validation.

     *

     * @param array $data array of ("fieldname"=>value) of submitted data

     * @param array $files array of uploaded files "element_name"=>tmp_file_path

     * @return array of "element_name"=>"error_description" if there are errors,

     *         or an empty array if everything is OK (true allowed for backwards compatibility too).

     */

    public function validation($data, $files) {

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

        // If this is a rate question.

        if ($data['type_id'] == QUESRATE) {

            if ($data['length'] < 2) {

                $errors["length"] = get_string('notenoughscaleitems', 'questionnaire');

            }

            // If this is a rate question with no duplicates option.

            if ($data['precise'] == 2 ) {

                $allchoices = $data['allchoices'];

                $allchoices = explode("\n", $allchoices);

                $nbvalues = 0;

                foreach ($allchoices as $choice) {

                    if ($choice && !preg_match("/^[0-9]{1,3}=/", $choice)) {

                            $nbvalues++;

                    }

                }

                if ($nbvalues < 2) {

                    $errors["allchoices"] = get_string('noduplicateschoiceserror', 'questionnaire');

                }

            }

        }

        // If this is a slider question.

        if ($data['type_id'] == QUESSLIDER) {

            if (isset($data['minrange']) && isset($data['maxrange']) && isset($data['startingvalue']) &&

                    isset($data['stepvalue'])) {

                if ($data['minrange'] >= $data['maxrange']) {

                    $errors['maxrange'] = get_string('invalidrange', 'questionnaire');

                }

                if (($data['startingvalue'] > $data['maxrange']) || ($data['startingvalue'] < $data['minrange'])) {

                    $errors['startingvalue'] = get_string('invalidstartingvalue', 'questionnaire');

                }

                if ($data['startingvalue'] > 100 || $data['startingvalue'] < -100) {

                    $errors['startingvalue'] = get_string('invalidstartingvalue', 'questionnaire');

                }

                if (($data['stepvalue'] > $data['maxrange']) || $data['stepvalue'] < 1) {

                    $errors['stepvalue'] = get_string('invalidincrement', 'questionnaire');

                }

                if ($data['minrange'] < -100) {

                    $errors['minrange'] = get_string('invalidminmaxrange', 'questionnaire');

                }

                if ($data['maxrange'] > 100) {

                    $errors['maxrange'] = get_string('invalidminmaxrange', 'questionnaire');

                }

            }

        }

        return $errors;

    }

    /**

     * Magic method for getting the protected $_form MoodleQuickForm and $_customdata array properties.

     * @param string $name

     * @return mixed

     */

    public function __get($name) {

        if ($name == '_form') {

            return $this->_form;

        } else if ($name == '_customdata') {

            return $this->_customdata;

        } else {

            throw new \coding_exception($name.' is not a publicly accessible property of '.get_class($this));

        }

    }

}