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efrain |
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Configurable Reports
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* A Moodle block for creating customizable reports
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* @package blocks
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* @author: Juan leyva <http://www.twitter.com/jleyvadelgado>
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* @date: 2009
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*/
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if (!defined('MOODLE_INTERNAL')) {
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// It must be included from a Moodle page.
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die('Direct access to this script is forbidden.');
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}
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require_once($CFG->libdir.'/formslib.php');
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class conditions_form extends moodleform {
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public function definition() {
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global $DB, $USER, $CFG;
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$mform =& $this->_form;
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$mform->addElement('static', 'help', '', get_string('conditionexprhelp', 'block_configurable_reports'));
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$mform->addElement('text', 'conditionexpr', get_string('conditionexpr', 'block_configurable_reports'), 'size="50"');
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$mform->setType('conditionexpr', PARAM_RAW);
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$mform->addHelpButton('conditionexpr', 'conditionexpr_conditions', 'block_configurable_reports');
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// Buttons.
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$this->add_action_buttons(true, get_string('update'));
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}
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public function validation($data, $files) {
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$errors = parent::validation($data, $files);
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// TODO - this reg expr can be improved.
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if (!preg_match("/(\(*\s*\bc\d{1,2}\b\s*\(*\)*\s*(\(|and|or|not)\s*)+\(*\s*\bc\d{1,2}\b\s*\(*\)*\s*$/i", $data['conditionexpr'])) {
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$errors['conditionexpr'] = get_string('badconditionexpr', 'block_configurable_reports');
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}
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if (substr_count($data['conditionexpr'], '(') != substr_count($data['conditionexpr'], ')')) {
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$errors['conditionexpr'] = get_string('badconditionexpr', 'block_configurable_reports');
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}
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if (isset($this->_customdata['elements']) && is_array($this->_customdata['elements'])) {
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$elements = $this->_customdata['elements'];
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$nel = count($elements);
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if (!empty($elements) && $nel > 1) {
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preg_match_all('/(\d+)/', $data['conditionexpr'], $matches, PREG_PATTERN_ORDER);
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foreach ($matches[0] as $num) {
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if ($num > $nel) {
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$errors['conditionexpr'] = get_string('badconditionexpr', 'block_configurable_reports');
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break;
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}
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}
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}
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}
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return $errors;
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}
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}
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