Merge pull request #130 from hansegucker/before-create-obj-hook

Add before_create_obj hook to BatchCreateMutation

graphene_django_cud/mutations/core.py

@@ -378,7 +378,11 @@ def create_obj(
             model_field_values[name + "_id"] = obj_id
 
         # Foreign keys are added, we are ready to create our object
-        obj = Model.objects.create(**model_field_values)
+        obj = Model(**model_field_values)
+
+        cls.before_create_obj(info, input, obj)
+
+        obj.save()
 
         # Handle one to one rels
         if len(one_to_one_rels) > 0:
@@ -408,8 +412,6 @@ def create_obj(
 
                 setattr(obj, name, new_value)
 
-            obj.save()
-
         # Handle extras fields
         for name, extras in many_to_many_extras.items():
             field = Model._meta.get_field(name)
@@ -757,6 +759,10 @@ def before_save(cls, root, info, *args, **kwargs):
     def after_mutate(cls, root, info, *args, **kwargs):
         return None
 
+    @classmethod
+    def before_create_obj(cls, info, input, obj):
+        return None
+
     @classmethod
     def resolve_id(cls, id):
         return disambiguate_id(id)