controller/frontend/src/Controller/Frontend/Attribute/Standard.php
public function attribute( $attrIds )
	{
		if( !empty( $attrIds ) ) {
			$this->conditions[] = $this->filter->compare( '==', 'attribute.id', $attrIds );
		}

		return $this;
	}
public function attribute( $attrIds )
	{
		if( !empty( $attrIds ) ) {
			$this->conditions[] = $this->filter->compare( '==', 'attribute.id', $attrIds );
		}

		return $this;
	}
public function attribute ( $ attrIds ) { if ( ! empty ( $ attrIds ) ) { $ this -> conditions [ ] = $ this -> filter -> compare ( '==' , 'attribute.id' , $ attrIds ) ; } return $ this ; }
Adds attribute IDs for filtering

@param array|string $attrIds Attribute ID or list of IDs
@return \Aimeos\Controller\Frontend\Attribute\Iface Attribute controller for fluent interface
@since 2019.04
Adds attribute IDs for filtering