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Merge branch 'MDL-44646-master' of https://github.com/lucaboesch/moodle
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<?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/>. | ||
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/** | ||
* This is filter is used to see which students are enroled on any courses | ||
* | ||
* @package core_user | ||
* @copyright 2014 Krister Viirsaar | ||
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
*/ | ||
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defined('MOODLE_INTERNAL') || die(); | ||
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/** | ||
* User filter to distinguish users with no or any enroled courses. | ||
* @copyright 2014 Krister Viirsaar | ||
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
*/ | ||
class user_filter_anycourses extends user_filter_yesno { | ||
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/** | ||
* Returns the condition to be used with SQL | ||
* | ||
* @param array $data filter settings | ||
* @return array sql string and $params | ||
*/ | ||
public function get_sql_filter($data) { | ||
$value = $data['value']; | ||
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$not = $value ? '' : 'NOT'; | ||
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return array("EXISTS ( SELECT userid FROM {user_enrolments} ) AND " . | ||
" id $not IN ( SELECT userid FROM {user_enrolments} )", array()); | ||
} | ||
} | ||
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