Creating a serializer callable for every type in an index and passing it to elastica

DependencyInjection/Configuration.php

@@ -34,7 +34,15 @@ class Configuration implements ConfigurationInterface
                 ->scalarNode('default_client')->end()
                 ->scalarNode('default_index')->end()
                 ->scalarNode('default_manager')->defaultValue('orm')->end()
-                ->scalarNode('serializer_id')->end()
+                ->arrayNode('serializer')
+                    ->prototype('array')
+                        ->treatNullLike(array())
+                        ->children()
+                            ->scalarNode('callable_class')->end()
+                            ->scalarNode('id')->end()
+                        ->end()
+                    ->end()
+                ->end()
             ->end()
         ;