original_string: public function instance_form_definition(\MoodleQuickForm $mform) {
          $field = $this->get_field();
          // Get the current calendar in use - see MDL-18375.
          $calendartype = \core_calendar\type_factory::get_calendar_instance();
  
          $config = $field->get('configdata');
  
          // Always set the form element to "optional", even when it's required. Otherwise it defaults to the
          // current date and is easy to miss.
          $attributes = ['optional' => true];
  
          if (!empty($config['mindate'])) {
              $attributes['startyear'] = $calendartype->timestamp_to_date_array($config['mindate'])['year'];
          }
  
          if (!empty($config['maxdate'])) {
              $attributes['stopyear'] = $calendartype->timestamp_to_date_array($config['maxdate'])['year'];
          }
  
          if (empty($config['includetime'])) {
              $element = 'date_selector';
          } else {
              $element = 'date_time_selector';
          }
          $elementname = $this->get_form_element_name();
          $mform->addElement($element, $elementname, $this->get_field()->get_formatted_name(), $attributes);
          $mform->setType($elementname, PARAM_INT);
          $mform->setDefault($elementname, time());
          if ($field->get_configdata_property('required')) {
              $mform->addRule($elementname, null, 'required', null, 'client');
          }
      }
code: public function instance_form_definition(\MoodleQuickForm $mform) {
          $field = $this->get_field();
          // Get the current calendar in use - see MDL-18375.
          $calendartype = \core_calendar\type_factory::get_calendar_instance();
  
          $config = $field->get('configdata');
  
          // Always set the form element to "optional", even when it's required. Otherwise it defaults to the
          // current date and is easy to miss.
          $attributes = ['optional' => true];
  
          if (!empty($config['mindate'])) {
              $attributes['startyear'] = $calendartype->timestamp_to_date_array($config['mindate'])['year'];
          }
  
          if (!empty($config['maxdate'])) {
              $attributes['stopyear'] = $calendartype->timestamp_to_date_array($config['maxdate'])['year'];
          }
  
          if (empty($config['includetime'])) {
              $element = 'date_selector';
          } else {
              $element = 'date_time_selector';
          }
          $elementname = $this->get_form_element_name();
          $mform->addElement($element, $elementname, $this->get_field()->get_formatted_name(), $attributes);
          $mform->setType($elementname, PARAM_INT);
          $mform->setDefault($elementname, time());
          if ($field->get_configdata_property('required')) {
              $mform->addRule($elementname, null, 'required', null, 'client');
          }
      }
code_tokens: public function instance_form_definition ( \ MoodleQuickForm $ mform ) { $ field = $ this -> get_field ( ) ; // Get the current calendar in use - see MDL-18375. $ calendartype = \ core_calendar \ type_factory :: get_calendar_instance ( ) ; $ config = $ field -> get ( 'configdata' ) ; // Always set the form element to "optional", even when it's required. Otherwise it defaults to the // current date and is easy to miss. $ attributes = [ 'optional' => true ] ; if ( ! empty ( $ config [ 'mindate' ] ) ) { $ attributes [ 'startyear' ] = $ calendartype -> timestamp_to_date_array ( $ config [ 'mindate' ] ) [ 'year' ] ; } if ( ! empty ( $ config [ 'maxdate' ] ) ) { $ attributes [ 'stopyear' ] = $ calendartype -> timestamp_to_date_array ( $ config [ 'maxdate' ] ) [ 'year' ] ; } if ( empty ( $ config [ 'includetime' ] ) ) { $ element = 'date_selector' ; } else { $ element = 'date_time_selector' ; } $ elementname = $ this -> get_form_element_name ( ) ; $ mform -> addElement ( $ element , $ elementname , $ this -> get_field ( ) -> get_formatted_name ( ) , $ attributes ) ; $ mform -> setType ( $ elementname , PARAM_INT ) ; $ mform -> setDefault ( $ elementname , time ( ) ) ; if ( $ field -> get_configdata_property ( 'required' ) ) { $ mform -> addRule ( $ elementname , null , 'required' , null , 'client' ) ; } }
docstring: Add fields for editing data of a date field on a context.
  
  @param \MoodleQuickForm $mform
docstring_tokens: Add fields for editing data of a date field on a context .