Advanced development with eZ Find - part 2 : Indexing additional fields in Solr
Tuesday 15 June 2010 5:20:10 am
Step 3 : Understanding the role of the getFieldName() method
This method is invoked the attributes names (within eZ Find) to Solr field names. For instance, when building a facet using the following syntax : 'mycontentclass/mydateattribute', this method receives 'mydateattribute' and should return 'attr_mydateattribute_dt'. Here is how we are going to implement the body of this method :
- If a subattribute is specified ( for instance : 'mycontentclass/mydateattribute/year' ), then return the composed name of the subattribute.
- If no subattribute is specified, then execute the associated parent class code
- Important : to make sure the written code is generic enough, and avoid hard-coding the Solr field names, we will use the handy generateSubattributeFieldName and generateAttributeFieldName methods.
const DEFAULT_SUBATTRIBUTE_TYPE = 'date';
public static function getFieldName( eZContentClassAttribute $classAttribute, $subAttribute = null, $context = 'search' )
{
switch ( $classAttribute->attribute( 'data_type_string' ) )
{
case 'ezdate' :
{
if ( $subAttribute and $subAttribute !== '' )
{
// A subattribute was passed
return parent::generateSubattributeFieldName( $classAttribute,
$subAttribute,
self::DEFAULT_SUBATTRIBUTE_TYPE );
}
else
{
// return the default field name here.
return parent::generateAttributeFieldName( $classAttribute, self::getClassAttributeType( $classAttribute, null, $context ) );
}
} break;
default:
{} break;
}
}