From 1cbed050b8cfd0812728be67e139dc6d120aa2b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miko=C5=82aj=20Walczak?= <mikiwalczak+github@gmail.com>
Date: Fri, 4 Aug 2017 10:09:03 +0100
Subject: [PATCH] Allow custom Meta attributes in subclasses of Interface

---
 graphene/types/interface.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/graphene/types/interface.py b/graphene/types/interface.py
index f0980b6c..08e5bac5 100644
--- a/graphene/types/interface.py
+++ b/graphene/types/interface.py
@@ -16,12 +16,19 @@ class InterfaceMeta(AbstractTypeMeta):
         if not is_base_type(bases, InterfaceMeta):
             return type.__new__(cls, name, bases, attrs)
 
-        options = Options(
-            attrs.pop('Meta', None),
+        _meta = attrs.pop('_meta', None)
+        defaults = dict(
             name=name,
             description=trim_docstring(attrs.get('__doc__')),
             local_fields=None,
         )
+        if not _meta:
+            options = Options(
+                attrs.pop('Meta', None),
+                **defaults
+            )
+        else:
+            options = _meta.extend_with_defaults(defaults)
 
         options.base_fields = get_base_fields(bases, _as=Field)