Fixed many to many relations in Django model

Author: syrusakbary

graphene/contrib/django/converter.py

@@ -58,6 +58,7 @@ def convert_field_to_float(field):
 
 @convert_django_field.register(models.ManyToManyField)
 @convert_django_field.register(models.ManyToOneRel)
+@convert_django_field.register(models.ManyToManyRel)
 def convert_field_to_list_or_connection(field):
     from .fields import DjangoModelField, ConnectionOrListField
     model_field = DjangoModelField(get_related_model(field))

graphene/contrib/django/tests/models.py

@@ -7,6 +7,11 @@ class Pet(models.Model):
     name = models.CharField(max_length=30)
 
 
+class Film(models.Model):
+    reporters = models.ManyToManyField('Reporter',
+                                       related_name='films')
+
+
 class Reporter(models.Model):
     first_name = models.CharField(max_length=30)
     last_name = models.CharField(max_length=30)

graphene/contrib/django/tests/test_schema.py

@@ -29,7 +29,7 @@ class Meta:
             model = Reporter
     assert_equal_lists(
         ReporterType2._meta.fields_map.keys(),
-        ['articles', 'first_name', 'last_name', 'email', 'pets', 'id']
+        ['articles', 'first_name', 'last_name', 'email', 'pets', 'id', 'films']
     )
 
 

graphene/contrib/django/utils.py

@@ -35,6 +35,8 @@ def get_reverse_fields(model):
             yield new_related
         elif isinstance(related, models.ManyToOneRel):
             yield related
+        elif isinstance(related, models.ManyToManyRel) and not related.symmetrical:
+            yield related
 
 
 class WrappedQueryset(LazyList):