Proyectos de Subversion Moodle

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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 coursestats_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('header', 'crformheader', get_string('coursestats', 'block_configurable_reports'), '');
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        $coursestats = array(
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            'totalenrolments' => get_string('statstotalenrolments', 'block_configurable_reports'),
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            'activeenrolments' => get_string('statsactiveenrolments', 'block_configurable_reports'),
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            'activityview' => get_string('activityview', 'block_configurable_reports'),
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            'activitypost' => get_string('activitypost', 'block_configurable_reports')
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        );
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        $mform->addElement('select', 'stat', get_string('stat', 'block_configurable_reports'), $coursestats);
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        $roles = $DB->get_records('role');
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        $userroles = array();
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        foreach ($roles as $r) {
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            $userroles[$r->id] = $r->shortname;
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        }
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        $mform->addElement('select', 'roles', get_string('roles'), $userroles, array('multiple' => 'multiple'));
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        $mform->disabledIf('roles', 'stat', 'eq', 'totalenrolments');
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        $mform->disabledIf('roles', 'stat', 'eq', 'activeenrolments');
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        $this->_customdata['compclass']->add_form_elements($mform, $this);
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        // Buttons.
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        $this->add_action_buttons(true, get_string('add'));
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    }
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    public function validation($data, $files) {
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        global $DB, $CFG;
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        $errors = parent::validation($data, $files);
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        $errors = $this->_customdata['compclass']->validate_form_elements($data, $errors);
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        if (!isset($CFG->enablestats) || !$CFG->enablestats) {
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            $errors['stat'] = get_string('globalstatsshouldbeenabled', 'block_configurable_reports');
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        }
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        if (($data['stat'] == 'activityview' || $data['stat'] == 'activitypost') && !isset($data['roles'])) {
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            $errors['roles'] = get_string('youmustselectarole', 'block_configurable_reports');
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        }
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        return $errors;
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    }
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}