protected function missing_old_and_model( $name ) {
		return ( is_null( $this->old( $name ) ) && is_null( $this->get_model_value_attribute( $name ) ) );
	}
protected function missing_old_and_model( $name ) {
		return ( is_null( $this->old( $name ) ) && is_null( $this->get_model_value_attribute( $name ) ) );
	}
protected function missing_old_and_model ( $ name ) { return ( is_null ( $ this -> old ( $ name ) ) && is_null ( $ this -> get_model_value_attribute ( $ name ) ) ) ; }
Determine if old input or model input exists for a key.

@param  string $name
@return bool
Determine if old input or model input exists for a key .