original_string: public function delete() {
          global $CFG, $DB;
          require_once($CFG->libdir.'/gradelib.php');
          require_once($CFG->dirroot.'/calendar/lib.php');
  
          $cm = get_coursemodule_from_instance('lesson', $this->properties->id, $this->properties->course);
          $context = context_module::instance($cm->id);
  
          $this->delete_all_overrides();
  
          grade_update('mod/lesson', $this->properties->course, 'mod', 'lesson', $this->properties->id, 0, null, array('deleted'=>1));
  
          // We must delete the module record after we delete the grade item.
          $DB->delete_records("lesson", array("id"=>$this->properties->id));
          $DB->delete_records("lesson_pages", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_answers", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_attempts", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_grades", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_timer", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_branch", array("lessonid"=>$this->properties->id));
          if ($events = $DB->get_records('event', array("modulename"=>'lesson', "instance"=>$this->properties->id))) {
              $coursecontext = context_course::instance($cm->course);
              foreach($events as $event) {
                  $event->context = $coursecontext;
                  $event = calendar_event::load($event);
                  $event->delete();
              }
          }
  
          // Delete files associated with this module.
          $fs = get_file_storage();
          $fs->delete_area_files($context->id);
  
          return true;
      }
code: public function delete() {
          global $CFG, $DB;
          require_once($CFG->libdir.'/gradelib.php');
          require_once($CFG->dirroot.'/calendar/lib.php');
  
          $cm = get_coursemodule_from_instance('lesson', $this->properties->id, $this->properties->course);
          $context = context_module::instance($cm->id);
  
          $this->delete_all_overrides();
  
          grade_update('mod/lesson', $this->properties->course, 'mod', 'lesson', $this->properties->id, 0, null, array('deleted'=>1));
  
          // We must delete the module record after we delete the grade item.
          $DB->delete_records("lesson", array("id"=>$this->properties->id));
          $DB->delete_records("lesson_pages", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_answers", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_attempts", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_grades", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_timer", array("lessonid"=>$this->properties->id));
          $DB->delete_records("lesson_branch", array("lessonid"=>$this->properties->id));
          if ($events = $DB->get_records('event', array("modulename"=>'lesson', "instance"=>$this->properties->id))) {
              $coursecontext = context_course::instance($cm->course);
              foreach($events as $event) {
                  $event->context = $coursecontext;
                  $event = calendar_event::load($event);
                  $event->delete();
              }
          }
  
          // Delete files associated with this module.
          $fs = get_file_storage();
          $fs->delete_area_files($context->id);
  
          return true;
      }
code_tokens: public function delete ( ) { global $ CFG , $ DB ; require_once ( $ CFG -> libdir . '/gradelib.php' ) ; require_once ( $ CFG -> dirroot . '/calendar/lib.php' ) ; $ cm = get_coursemodule_from_instance ( 'lesson' , $ this -> properties -> id , $ this -> properties -> course ) ; $ context = context_module :: instance ( $ cm -> id ) ; $ this -> delete_all_overrides ( ) ; grade_update ( 'mod/lesson' , $ this -> properties -> course , 'mod' , 'lesson' , $ this -> properties -> id , 0 , null , array ( 'deleted' => 1 ) ) ; // We must delete the module record after we delete the grade item. $ DB -> delete_records ( "lesson" , array ( "id" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_pages" , array ( "lessonid" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_answers" , array ( "lessonid" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_attempts" , array ( "lessonid" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_grades" , array ( "lessonid" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_timer" , array ( "lessonid" => $ this -> properties -> id ) ) ; $ DB -> delete_records ( "lesson_branch" , array ( "lessonid" => $ this -> properties -> id ) ) ; if ( $ events = $ DB -> get_records ( 'event' , array ( "modulename" => 'lesson' , "instance" => $ this -> properties -> id ) ) ) { $ coursecontext = context_course :: instance ( $ cm -> course ) ; foreach ( $ events as $ event ) { $ event -> context = $ coursecontext ; $ event = calendar_event :: load ( $ event ) ; $ event -> delete ( ) ; } } // Delete files associated with this module. $ fs = get_file_storage ( ) ; $ fs -> delete_area_files ( $ context -> id ) ; return true ; }
docstring: Deletes this lesson from the database
docstring_tokens: Deletes this lesson from the database