map_fields = array_merge(parent::init_map_fields(), array( 'responsability_fonction' => 'http://www.pmbservices.fr/ontology#author_function', )); return $this->map_fields; } protected function init_foreign_fields() { $this->foreign_fields = array_merge(parent::init_foreign_fields(), array( 'responsability_author' => array( 'type' => 'author', 'property' => 'http://www.pmbservices.fr/ontology#has_author' ), )); return $this->foreign_fields; } }