protected function _setDisplayField() {
		$orderField = $this->_getOrderField();
		if (empty($orderField)) {
			return false;
		}

		$this->displayField = $orderField;

		return true;
	}
protected function _setDisplayField() {
		$orderField = $this->_getOrderField();
		if (empty($orderField)) {
			return false;
		}

		$this->displayField = $orderField;

		return true;
	}
protected function _setDisplayField ( ) { $ orderField = $ this -> _getOrderField ( ) ; if ( empty ( $ orderField ) ) { return false ; } $ this -> displayField = $ orderField ; return true ; }
Set Display field of model

@return bool Return success.
Set Display field of model