Fix handling of root value to be like Schema.execute.

Author: jhgg

graphene/contrib/django/views.py

@@ -2,9 +2,15 @@
 
 
 class GraphQLView(BaseGraphQLView):
+    graphene_schema = None
+
     def __init__(self, schema, **kwargs):
         super(GraphQLView, self).__init__(
+            graphene_schema=schema,
             schema=schema.schema,
             executor=schema.executor,
             **kwargs
         )
+
+    def get_root_value(self, request):
+        return self.graphene_schema.query(super(GraphQLView, self).get_root_value(request))

tests/contrib_django/test_urls.py

@@ -23,8 +23,7 @@ class Human(DjangoNode):
     class Meta:
         model = Article
 
-    @staticmethod
-    def resolve_raises(*args):
+    def resolve_raises(self, *args):
         raise Exception("This field should raise exception")
 
     def get_node(self, id):