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Advanced development with eZ Find - part 2 : Indexing additional fields in Solr

Tuesday 15 June 2010 2:20:10 pm

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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;
  }
}
 
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