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Differences Between: [Versions 310 and 401] [Versions 39 and 401]

   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   * Search area for course custom fields.
  19   *
  20   * @package core_course
  21   * @copyright Toni Barbera <toni@moodle.com>
  22   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace core_course\search;
  26  
  27  use core_course\customfield\course_handler;
  28  use core_customfield\data_controller;
  29  use core_customfield\field_controller;
  30  
  31  defined('MOODLE_INTERNAL') || die();
  32  
  33  /**
  34   * Search area for course custom fields.
  35   *
  36   * @package core_course
  37   * @copyright Toni Barbera <toni@moodle.com>
  38   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  39   */
  40  class customfield extends \core_search\base {
  41  
  42      /**
  43       * Custom fields are indexed at course context.
  44       *
  45       * @var array
  46       */
  47      protected static $levels = [CONTEXT_COURSE];
  48  
  49      /**
  50       * Returns recordset containing required data for indexing
  51       * course custom fields.
  52       *
  53       * @param int $modifiedfrom timestamp
  54       * @param \context|null $context Restriction context
  55       * @return \moodle_recordset|null Recordset or null if no change possible
  56       */
  57      public function get_document_recordset($modifiedfrom = 0, \context $context = null) {
  58          global $DB;
  59  
  60          list ($contextjoin, $contextparams) = $this->get_course_level_context_restriction_sql($context, 'c', SQL_PARAMS_NAMED);
  61          if ($contextjoin === null) {
  62              return null;
  63          }
  64  
  65          $fields = course_handler::create()->get_fields();
  66          if (!$fields) {
  67              $fields = array();
  68          }
  69          list($fieldsql, $fieldparam) = $DB->get_in_or_equal(array_keys($fields), SQL_PARAMS_NAMED, 'fld', true, 0);
  70  
  71          // Restrict recordset to CONTEXT_COURSE (since we are implementing it to core_course\search).
  72          $sql = "SELECT d.*
  73                    FROM {customfield_data} d
  74                    JOIN {course} c ON c.id = d.instanceid
  75                    JOIN {context} cnt ON cnt.instanceid = c.id
  76             $contextjoin
  77                   WHERE d.timemodified >= :modifiedfrom
  78                     AND cnt.contextlevel = :contextlevel
  79                     AND d.fieldid $fieldsql
  80                ORDER BY d.timemodified ASC";
  81          return $DB->get_recordset_sql($sql , array_merge($contextparams,
  82              ['modifiedfrom' => $modifiedfrom, 'contextlevel' => CONTEXT_COURSE], $fieldparam));
  83      }
  84  
  85      /**
  86       * Returns the document associated with this section.
  87       *
  88       * @param \stdClass $record
  89       * @param array $options
  90       * @return \core_search\document|bool
  91       */
  92      public function get_document($record, $options = array()) {
  93          global $PAGE;
  94  
  95          try {
  96              $context = \context_course::instance($record->instanceid);
  97          } catch (\moodle_exception $ex) {
  98              // Notify it as we run here as admin, we should see everything.
  99              debugging('Error retrieving ' . $this->areaid . ' ' . $record->id . ' document, not all required data is available: ' .
 100                  $ex->getMessage(), DEBUG_DEVELOPER);
 101              return false;
 102          }
 103  
 104          $handler = course_handler::create();
 105          $field = $handler->get_fields()[$record->fieldid];
 106          $data = data_controller::create(0, $record, $field);
 107  
 108          // Prepare associative array with data from DB.
 109          $doc = \core_search\document_factory::instance($record->id, $this->componentname, $this->areaname);
 110          $doc->set('title', content_to_text($field->get('name'), false));
 111          $doc->set('content', content_to_text($data->export_value(), FORMAT_HTML));
 112          $doc->set('contextid', $context->id);
 113          $doc->set('courseid', $context->instanceid);
 114          $doc->set('owneruserid', \core_search\manager::NO_OWNER_ID);
 115          $doc->set('modified', $record->timemodified);
 116  
 117          // Check if this document should be considered new.
 118          if (isset($options['lastindexedtime']) && ($options['lastindexedtime'] < $record->timecreated)) {
 119              // If the document was created after the last index time, it must be new.
 120              $doc->set_is_new(true);
 121          }
 122  
 123          return $doc;
 124      }
 125  
 126      /**
 127       * Whether the user can access the document or not.
 128       *
 129       * @param int $id The custom field data ID
 130       * @return int
 131       */
 132      public function check_access($id) {
 133          global $DB;
 134  
 135          $coursesql = '
 136              SELECT c.*
 137                FROM {course} c
 138                JOIN {customfield_data} d ON d.instanceid = c.id
 139               WHERE d.id = :dataid';
 140  
 141          // Verify both the course and data record still exist.
 142          $course = $DB->get_record_sql($coursesql, ['dataid' => $id]);
 143          if (!$course) {
 144              return \core_search\manager::ACCESS_DELETED;
 145          }
 146  
 147          // Check whether user is enrolled and the course is visible, or user can view it while hidden.
 148          $context = \context_course::instance($course->id);
 149          $userenrolled = is_enrolled($context) &&
 150              ($course->visible || has_capability('moodle/course:viewhiddencourses', $context));
 151  
 152          // Grant access if user is considered enrolled, or they can otherwise see the course info.
 153          if ($userenrolled || \core_course_category::can_view_course_info($course)) {
 154              return \core_search\manager::ACCESS_GRANTED;
 155          }
 156  
 157          return \core_search\manager::ACCESS_DENIED;
 158      }
 159  
 160      /**
 161       * Link to the course.
 162       *
 163       * @param \core_search\document $doc
 164       * @return \moodle_url
 165       */
 166      public function get_doc_url(\core_search\document $doc) {
 167          return $this->get_context_url($doc);
 168      }
 169  
 170      /**
 171       * Link to the course.
 172       *
 173       * @param \core_search\document $doc
 174       * @return \moodle_url
 175       */
 176      public function get_context_url(\core_search\document $doc) {
 177          return new \moodle_url('/course/view.php', array('id' => $doc->get('courseid')));
 178      }
 179  
 180      /**
 181       * Returns the moodle component name.
 182       *
 183       * It might be the plugin name (whole frankenstyle name) or the core subsystem name.
 184       *
 185       * @return string
 186       */
 187      public function get_component_name() {
 188          return 'course';
 189      }
 190  
 191      /**
 192       * Returns an icon instance for the document.
 193       *
 194       * @param \core_search\document $doc
 195       * @return \core_search\document_icon
 196       */
 197      public function get_doc_icon(\core_search\document $doc) : \core_search\document_icon {
 198          return new \core_search\document_icon('i/customfield');
 199      }
 200  
 201      /**
 202       * Returns a list of category names associated with the area.
 203       *
 204       * @return array
 205       */
 206      public function get_category_names() {
 207          return [
 208              \core_search\manager::SEARCH_AREA_CATEGORY_COURSE_CONTENT,
 209              \core_search\manager::SEARCH_AREA_CATEGORY_COURSES
 210          ];
 211      }
 212  }