From 2cb3d4b68e28c6673d810a797fa34945148482a7 Mon Sep 17 00:00:00 2001
From: Anton Zhdan-Pushkin <maqquettex@gmail.com>
Date: Tue, 11 Jul 2017 13:03:08 +0300
Subject: [PATCH] Class attributes for GraphQLView (schema, pretty, graphiql,
 batch)

---
 graphene_django/views.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/graphene_django/views.py b/graphene_django/views.py
index cc9e8bb..e43c9e1 100644
--- a/graphene_django/views.py
+++ b/graphene_django/views.py
@@ -72,14 +72,14 @@ class GraphQLView(View):
         if middleware is None:
             middleware = graphene_settings.MIDDLEWARE
 
-        self.schema = schema
+        self.schema = self.schema or schema
         if middleware is not None:
             self.middleware = list(instantiate_middleware(middleware))
         self.executor = executor
         self.root_value = root_value
-        self.pretty = pretty
-        self.graphiql = graphiql
-        self.batch = batch
+        self.pretty = self.pretty or pretty
+        self.graphiql = self.graphiql or graphiql
+        self.batch = self.batch or batch
 
         assert isinstance(
             self.schema, GraphQLSchema), 'A Schema is required to be provided to GraphQLView.'