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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * Form used to select a file and file format for the import
  20   *
  21   * @package mod_lesson
  22   * @copyright  2009 Sam Hemelryk
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   **/
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  /**
  29   * Form used to select a file and file format for the import
  30   * @copyright  2009 Sam Hemelryk
  31   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  32   */
  33  class lesson_import_form extends moodleform {
  34  
  35      public function definition() {
  36  
  37          $mform = $this->_form;
  38  
  39          $mform->addElement('hidden', 'id');
  40          $mform->setType('id', PARAM_INT);
  41  
  42          $mform->addElement('hidden', 'pageid');
  43          $mform->setType('pageid', PARAM_INT);
  44  
  45          $mform->addElement('select', 'format', get_string('fileformat', 'lesson'), $this->_customdata['formats']);
  46          $mform->setDefault('format', 'gift');
  47          $mform->setType('format', 'text');
  48          $mform->addRule('format', null, 'required');
  49  
  50          //Using filemanager as filepicker
  51          $mform->addElement('filepicker', 'questionfile', get_string('upload'));
  52          $mform->addRule('questionfile', null, 'required', null, 'client');
  53  
  54          $this->add_action_buttons(null, get_string("import"));
  55      }
  56  
  57      /**
  58       * Checks that a file has been uploaded, and that it is of a plausible type.
  59       * @param array $data the submitted data.
  60       * @param array $errors the errors so far.
  61       * @return array the updated errors.
  62       * @throws moodle_exception
  63       */
  64      protected function validate_uploaded_file($data, $errors) {
  65          global $CFG;
  66  
  67          if (empty($data['questionfile'])) {
  68              $errors['questionfile'] = get_string('required');
  69              return $errors;
  70          }
  71  
  72          $files = $this->get_draft_files('questionfile');
  73          if (!is_array($files) || count($files) < 1) {
  74              $errors['questionfile'] = get_string('required');
  75              return $errors;
  76          }
  77  
  78          $formatfile = $CFG->dirroot.'/question/format/'.$data['format'].'/format.php';
  79          if (!is_readable($formatfile)) {
  80              throw new moodle_exception('formatnotfound', 'lesson', '', $data['format']);
  81          }
  82  
  83          require_once($formatfile);
  84  
  85          $classname = 'qformat_' . $data['format'];
  86          $qformat = new $classname();
  87  
  88          return $errors;
  89      }
  90  
  91      public function validation($data, $files) {
  92          $errors = parent::validation($data, $files);
  93          $errors = $this->validate_uploaded_file($data, $errors);
  94          return $errors;
  95      }
  96  }