eventespresso / event-espresso-core

		}

		//if we couldn't export anything, we want to at least show the column headers

		if(empty($registrations_csv_ready_array)){

			$reg_csv_array = array();

			$model_and_fields_to_include = array(

				'Registration' => $reg_fields_to_include,

				'Attendee' => $att_fields_to_include

			);

			foreach($model_and_fields_to_include as $model_name => $field_list){

				$model = EE_Registry::instance()->load_model($model_name);

				foreach($field_list as $field_name){

					$field = $model->field_settings_for($field_name);

					$reg_csv_array[$this->_get_column_name_for_field($field)] = null;//$registration->get($field->get_name());

				}

			}

			$registrations_csv_ready_array [] = $reg_csv_array;

		}

		if( $event_id ){

			$event_slug =  EEM_Event::instance()->get_var( array( array( 'EVT_ID' => $event_id ) ), 'EVT_slug' );

			if( ! $event_slug ) {

			}

		}

		//if we couldn't export anything, we want to at least show the column headers

		if ( empty( $registrations_csv_ready_array ) ) {

			$reg_csv_array = array();

			$model_and_fields_to_include = array(

				'Registration' => $reg_fields_to_include,

				'Attendee'     => $att_fields_to_include

			);

			foreach ( $model_and_fields_to_include as $model_name => $field_list ) {

				$model = \EE_Registry::instance()->load_model( $model_name );

				foreach ( $field_list as $field_name ) {

					$field = $model->field_settings_for( $field_name );

					$reg_csv_array[ \EEH_Export::get_column_name_for_field( $field ) ] = null;

				}

			}

			$registrations_csv_ready_array[] = $reg_csv_array;

		}

		return $registrations_csv_ready_array;

	}