Created LazyField. Abstracted the Django connection into it.

graphene/contrib/django/converter.py

@@ -9,7 +9,7 @@ from graphene.core.fields import (
     FloatField,
     ListField
 )
-from graphene.contrib.django.fields import DjangoModelField
+from graphene.contrib.django.fields import ConnectionOrListField, DjangoModelField
 
 @singledispatch
 def convert_django_field(field, cls):
@@ -48,9 +48,7 @@ def _(field, cls):
 def _(field, cls):
     schema = cls._meta.schema
     model_field = DjangoModelField(field.related_model)
-    if issubclass(cls, schema.relay.Node):
-        return schema.relay.ConnectionField(model_field)
-    return ListField(model_field)
+    return ConnectionOrListField(model_field)
 
 
 @convert_django_field.register(models.ForeignKey)

graphene/contrib/django/fields.py

@@ -1,6 +1,9 @@
-from graphene.core.fields import Field
-from graphene.utils import cached_property
+from graphene.core.fields import (
+    ListField
+)
 
+from graphene.core.fields import Field, LazyField
+from graphene.utils import cached_property
 from graphene.env import get_global_schema
 
 
@@ -13,6 +16,19 @@ def get_type_for_model(schema, model):
             return _type
 
 
+class ConnectionOrListField(LazyField):
+    def get_field(self):
+        schema = self.schema
+        model_field = self.field_type
+        field_object_type = model_field.get_object_type()
+        if field_object_type and issubclass(field_object_type, schema.relay.Node):
+            field = schema.relay.ConnectionField(model_field)
+        else:
+            field = ListField(model_field)
+        field.contribute_to_class(self.object_type, self.field_name)
+        return field
+
+
 class DjangoModelField(Field):
     def __init__(self, model):
         super(DjangoModelField, self).__init__(None)

graphene/core/fields.py

@@ -125,6 +125,19 @@ class NativeField(Field):
         self.field = field or getattr(self, 'field')
 
 
+class LazyField(Field):
+    @cached_property
+    def inner_field(self):
+        return self.get_field()
+
+    @cached_property
+    def type(self):
+        return self.inner_field.type
+
+    @cached_property
+    def field(self):
+        return self.inner_field.field
+
 class TypeField(Field):
     def __init__(self, *args, **kwargs):
         super(TypeField, self).__init__(self.field_type, *args, **kwargs)