Ouzo\Db\FieldTransformer::transform PHP Method

    public function transform(&$results)
    {
        if ($this->field) {
            $fields = FluentArray::from($results)->map(Functions::extractExpression($this->field))->flatten()->filterNotBlank()->toArray();
            $this->transformer->transform($fields);
        } else {
            $this->transformer->transform($results);
        }
    }

 private function _fetchRelations($results, $joinsToStore)
 {
     $joinedRelations = Arrays::map($joinsToStore, Functions::extract()->destinationField());
     foreach ($this->relationsToFetch as $relationToFetch) {
         if (!in_array($relationToFetch->destinationField, $joinedRelations)) {
             $relationFetcher = new RelationFetcher($relationToFetch->relation);
             $fieldTransformer = new FieldTransformer($relationToFetch->field, $relationFetcher);
             $fieldTransformer->transform($results);
         }
     }
     return $results;
 }