Fixed bug in nested model autocomplete filter

Resources/views/Form/Type/sonata_type_model_autocomplete.html.twig

@@ -66,7 +66,7 @@ file that was distributed with this source code.
                                 {% endif %}
 
                                 {% if context == 'filter' %}
-                                    'field':  '{{ full_name|replace({'filter[': '', '][value]': ''}) }}',
+                                    'field':  '{{ full_name|replace({'filter[': '', '][value]': '', '__':'.'}) }}',
                                     '_context': 'filter'
                                 {% else %}
                                     'field':  '{{ name }}'
@@ -165,4 +165,4 @@ file that was distributed with this source code.
             });
         })(jQuery);
     </script>
-{% endspaceless %}
+{% endspaceless %}