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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file keeps track of upgrades to the marking guide grading method.
  19   *
  20   * @package   gradingform_guide
  21   * @category  upgrade
  22   * @copyright 2016 Jun Pataleta
  23   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  /**
  29   * Marking guide grading method upgrade task.
  30   *
  31   * @param int $oldversion The version we are upgrading form.
  32   * @return bool Returns true on success.
  33   * @throws coding_exception
  34   * @throws downgrade_exception
  35   * @throws upgrade_exception
  36   */
  37  function xmldb_gradingform_guide_upgrade($oldversion) {
  38      global $DB;
  39  
  40      if ($oldversion < 2016051100) {
  41          // Clean up empty string or null marking guide comments.
  42          $sql = $DB->sql_isempty('gradingform_guide_comments', 'description', true, true);
  43          $sql .= " OR description IS NULL ";
  44          $DB->delete_records_select('gradingform_guide_comments', $sql);
  45          // Main savepoint reached.
  46          upgrade_plugin_savepoint(true, 2016051100, 'gradingform', 'guide');
  47      }
  48  
  49      // Moodle v3.1.0 release upgrade line.
  50      // Put any upgrade step following this.
  51  
  52      return true;
  53  }