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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   * @package    block_quiz_results
  19   * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  20   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  21   */
  22  
  23  defined('MOODLE_INTERNAL') || die();
  24  
  25  /**
  26   * Specialised restore task for the quiz_results block
  27   * (using execute_after_tasks for recoding of target quiz)
  28   *
  29   * TODO: Finish phpdocs
  30   *
  31   * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  32   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  33   */
  34  class restore_quiz_results_block_task extends restore_block_task {
  35  
  36      protected function define_my_settings() {
  37      }
  38  
  39      protected function define_my_steps() {
  40      }
  41  
  42      public function get_fileareas() {
  43          return array(); // No associated fileareas
  44      }
  45  
  46      public function get_configdata_encoded_attributes() {
  47          return array(); // No special handling of configdata
  48      }
  49  
  50      /**
  51       * This function, executed after all the tasks in the plan
  52       * have been executed, will perform the recode of the
  53       * target quiz for the block. This must be done here
  54       * and not in normal execution steps because the quiz
  55       * can be restored after the block.
  56       */
  57      public function after_restore() {
  58          global $DB;
  59  
  60          // Get the blockid
  61          $blockid = $this->get_blockid();
  62  
  63          // Extract block configdata and update it to point to the new quiz
  64          if ($configdata = $DB->get_field('block_instances', 'configdata', array('id' => $blockid))) {
  65              $config = unserialize(base64_decode($configdata));
  66              if (!empty($config->quizid)) {
  67                  // Get quiz mapping and replace it in config
  68                  if ($quizmap = restore_dbops::get_backup_ids_record($this->get_restoreid(), 'quiz', $config->quizid)) {
  69                      $config->quizid = $quizmap->newitemid;
  70                      $configdata = base64_encode(serialize($config));
  71                      $DB->set_field('block_instances', 'configdata', $configdata, array('id' => $blockid));
  72                  }
  73              }
  74          }
  75      }
  76  
  77      static public function define_decode_contents() {
  78          return array();
  79      }
  80  
  81      static public function define_decode_rules() {
  82          return array();
  83      }
  84  }