From 207f4ebb417934ba5194278c738396fe2c8bb4fd Mon Sep 17 00:00:00 2001
From: Tony Angerilli <tony@7geese.com>
Date: Mon, 14 Nov 2016 23:44:50 -0800
Subject: [PATCH] added a test and made the type property better

---
 graphene_django/filter/fields.py            |  4 +++-
 graphene_django/filter/tests/test_fields.py | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/graphene_django/filter/fields.py b/graphene_django/filter/fields.py
index 9fa6130..7e632a7 100644
--- a/graphene_django/filter/fields.py
+++ b/graphene_django/filter/fields.py
@@ -1,3 +1,5 @@
+import inspect
+
 from collections import OrderedDict
 from functools import partial
 
@@ -21,7 +23,7 @@ class DjangoFilterConnectionField(DjangoConnectionField):
 
     @property
     def node_type(self):
-        if callable(self._type):
+        if inspect.isfunction(self._type) or inspect.ismethod(self._type):
             return self._type()
         return self._type
 
diff --git a/graphene_django/filter/tests/test_fields.py b/graphene_django/filter/tests/test_fields.py
index ab3d677..ba1d8fc 100644
--- a/graphene_django/filter/tests/test_fields.py
+++ b/graphene_django/filter/tests/test_fields.py
@@ -350,3 +350,20 @@ def test_filter_filterset_related_results():
     assert not result.errors
     # We should only get two reporters
     assert len(result.data['allReporters']['edges']) == 2
+
+
+def test_recursive_filter_connection():
+    class ReporterFilterNode(DjangoObjectType):
+        child_reporters = DjangoFilterConnectionField(lambda: ReporterFilterNode)
+
+        def resolve_child_reporters(self, args, context, info):
+            return []
+
+        class Meta:
+            model = Reporter
+            interfaces = (Node, )
+
+    class Query(ObjectType):
+        all_reporters = DjangoFilterConnectionField(ReporterFilterNode)
+
+    assert ReporterFilterNode._meta.fields['child_reporters'].node_type == ReporterFilterNode