code: public function actionIndex($option = null)
  	{
  		$fixtures = Yii::createObject(Fixtures::className());
  		$option = Question::displayWithQuit('Select operation', ['Export', 'Import'], $option);
  		if($option == 'e') {
  			$allTables = $fixtures->tableNameList();
  			if(!empty($allTables)) {
  				$answer = Select::display('Select tables for export', $allTables, 1);
  				$tables = $fixtures->export($answer);
  				Output::items($tables, 'Exported tables');
  			} else {
  				Output::block("not tables for export!");
  			}
  		} elseif($option == 'i') {
  			$allTables = $fixtures->fixtureNameList();
  			if(!empty($allTables)) {
  				$answer = Select::display('Select tables for import', $allTables, 1);
  				$tables = $fixtures->import($answer);
  				Output::items($tables, 'Imported tables');
  			} else {
  				Output::block("not tables for import!");
  			}
  		}
  		
  	}
docs: Export or import fixtures