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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 and 403]

   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  use core_course\external\helper_for_get_mods_by_courses;
  18  use core_external\external_api;
  19  use core_external\external_files;
  20  use core_external\external_function_parameters;
  21  use core_external\external_multiple_structure;
  22  use core_external\external_single_structure;
  23  use core_external\external_value;
  24  use core_external\external_warnings;
  25  use core_external\util;
  26  
  27  /**
  28   * Resource external functions
  29   *
  30   * @package    mod_resource
  31   * @category   external
  32   * @copyright  2015 Juan Leyva <juan@moodle.com>
  33   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  34   * @since      Moodle 3.0
  35   */
  36  class mod_resource_external extends external_api {
  37  
  38      /**
  39       * Returns description of method parameters
  40       *
  41       * @return external_function_parameters
  42       * @since Moodle 3.0
  43       */
  44      public static function view_resource_parameters() {
  45          return new external_function_parameters(
  46              array(
  47                  'resourceid' => new external_value(PARAM_INT, 'resource instance id')
  48              )
  49          );
  50      }
  51  
  52      /**
  53       * Simulate the resource/view.php web interface page: trigger events, completion, etc...
  54       *
  55       * @param int $resourceid the resource instance id
  56       * @return array of warnings and status result
  57       * @since Moodle 3.0
  58       * @throws moodle_exception
  59       */
  60      public static function view_resource($resourceid) {
  61          global $DB, $CFG;
  62          require_once($CFG->dirroot . "/mod/resource/lib.php");
  63  
  64          $params = self::validate_parameters(self::view_resource_parameters(),
  65                                              array(
  66                                                  'resourceid' => $resourceid
  67                                              ));
  68          $warnings = array();
  69  
  70          // Request and permission validation.
  71          $resource = $DB->get_record('resource', array('id' => $params['resourceid']), '*', MUST_EXIST);
  72          list($course, $cm) = get_course_and_cm_from_instance($resource, 'resource');
  73  
  74          $context = context_module::instance($cm->id);
  75          self::validate_context($context);
  76  
  77          require_capability('mod/resource:view', $context);
  78  
  79          // Call the resource/lib API.
  80          resource_view($resource, $course, $cm, $context);
  81  
  82          $result = array();
  83          $result['status'] = true;
  84          $result['warnings'] = $warnings;
  85          return $result;
  86      }
  87  
  88      /**
  89       * Returns description of method result value
  90       *
  91       * @return \core_external\external_description
  92       * @since Moodle 3.0
  93       */
  94      public static function view_resource_returns() {
  95          return new external_single_structure(
  96              array(
  97                  'status' => new external_value(PARAM_BOOL, 'status: true if success'),
  98                  'warnings' => new external_warnings()
  99              )
 100          );
 101      }
 102  
 103      /**
 104       * Describes the parameters for get_resources_by_courses.
 105       *
 106       * @return external_function_parameters
 107       * @since Moodle 3.3
 108       */
 109      public static function get_resources_by_courses_parameters() {
 110          return new external_function_parameters (
 111              array(
 112                  'courseids' => new external_multiple_structure(
 113                      new external_value(PARAM_INT, 'Course id'), 'Array of course ids', VALUE_DEFAULT, array()
 114                  ),
 115              )
 116          );
 117      }
 118  
 119      /**
 120       * Returns a list of files in a provided list of courses.
 121       * If no list is provided all files that the user can view will be returned.
 122       *
 123       * @param array $courseids course ids
 124       * @return array of warnings and files
 125       * @since Moodle 3.3
 126       */
 127      public static function get_resources_by_courses($courseids = array()) {
 128  
 129          $warnings = array();
 130          $returnedresources = array();
 131  
 132          $params = array(
 133              'courseids' => $courseids,
 134          );
 135          $params = self::validate_parameters(self::get_resources_by_courses_parameters(), $params);
 136  
 137          $mycourses = array();
 138          if (empty($params['courseids'])) {
 139              $mycourses = enrol_get_my_courses();
 140              $params['courseids'] = array_keys($mycourses);
 141          }
 142  
 143          // Ensure there are courseids to loop through.
 144          if (!empty($params['courseids'])) {
 145  
 146              list($courses, $warnings) = util::validate_courses($params['courseids'], $mycourses);
 147  
 148              // Get the resources in this course, this function checks users visibility permissions.
 149              // We can avoid then additional validate_context calls.
 150              $resources = get_all_instances_in_courses("resource", $courses);
 151              foreach ($resources as $resource) {
 152                  $context = context_module::instance($resource->coursemodule);
 153  
 154                  helper_for_get_mods_by_courses::format_name_and_intro($resource, 'mod_resource');
 155                  $resource->contentfiles = util::get_area_files($context->id, 'mod_resource', 'content');
 156  
 157                  $returnedresources[] = $resource;
 158              }
 159          }
 160  
 161          $result = array(
 162              'resources' => $returnedresources,
 163              'warnings' => $warnings
 164          );
 165          return $result;
 166      }
 167  
 168      /**
 169       * Describes the get_resources_by_courses return value.
 170       *
 171       * @return external_single_structure
 172       * @since Moodle 3.3
 173       */
 174      public static function get_resources_by_courses_returns() {
 175          return new external_single_structure(
 176              array(
 177                  'resources' => new external_multiple_structure(
 178                      new external_single_structure(array_merge(
 179                          helper_for_get_mods_by_courses::standard_coursemodule_elements_returns(),
 180                          [
 181                              'contentfiles' => new external_files('Files in the content'),
 182                              'tobemigrated' => new external_value(PARAM_INT, 'Whether this resource was migrated'),
 183                              'legacyfiles' => new external_value(PARAM_INT, 'Legacy files flag'),
 184                              'legacyfileslast' => new external_value(PARAM_INT, 'Legacy files last control flag'),
 185                              'display' => new external_value(PARAM_INT, 'How to display the resource'),
 186                              'displayoptions' => new external_value(PARAM_RAW, 'Display options (width, height)'),
 187                              'filterfiles' => new external_value(PARAM_INT, 'If filters should be applied to the resource content'),
 188                              'revision' => new external_value(PARAM_INT, 'Incremented when after each file changes, to avoid cache'),
 189                              'timemodified' => new external_value(PARAM_INT, 'Last time the resource was modified'),
 190                          ]
 191                      ))
 192                  ),
 193                  'warnings' => new external_warnings(),
 194              )
 195          );
 196      }
 197  }