Add the info parameter (ResolveInfo) to get_node() calls.

This allows request_context (or any other ResolveInfo data) to be used while getting nodes.
For example, some data might need to be hidden based on the user's authorization; you would use info.request_context for this.

Fixes #34.

Author: inklesspen

examples/starwars_django/schema.py

@@ -17,7 +17,7 @@ class Meta:
         model = ShipModel
 
     @classmethod
-    def get_node(cls, id):
+    def get_node(cls, id, info):
         return Ship(get_ship(id))
 
 
@@ -33,7 +33,7 @@ class Meta:
         model = FactionModel
 
     @classmethod
-    def get_node(cls, id):
+    def get_node(cls, id, info):
         return Faction(get_faction(id))
 
 

examples/starwars_relay/schema.py

@@ -11,7 +11,7 @@ class Ship(relay.Node):
     name = graphene.String(description='The name of the ship.')
 
     @classmethod
-    def get_node(cls, id):
+    def get_node(cls, id, info):
         return get_ship(id)
 
 
@@ -27,7 +27,7 @@ def resolve_ships(self, **args):
         return [get_ship(ship_id) for ship_id in self.ships]
 
     @classmethod
-    def get_node(cls, id):
+    def get_node(cls, id, info):
         return get_faction(id)
 
 

graphene/contrib/django/tests/test_query.py

@@ -66,7 +66,7 @@ class Meta:
             model = Reporter
 
         @classmethod
-        def get_node(cls, id):
+        def get_node(cls, id, info):
             return ReporterNode(Reporter(id=2, first_name='Cookie Monster'))
 
         def resolve_articles(self, *args, **kwargs):
@@ -78,7 +78,7 @@ class Meta:
             model = Article
 
         @classmethod
-        def get_node(cls, id):
+        def get_node(cls, id, info):
             return ArticleNode(Article(id=1, headline='Article node'))
 
     class Query(graphene.ObjectType):

graphene/relay/fields.py

@@ -92,7 +92,7 @@ def id_fetcher(self, global_id, info):
                                         object_type != self.field_object_type):
             return
 
-        return object_type.get_node(_id)
+        return object_type.get_node(_id, info)
 
     def resolver(self, instance, args, info):
         global_id = args.get('id')

graphene/relay/tests/test_query.py

@@ -1,3 +1,4 @@
+import pytest
 from graphql.core.type import GraphQLID, GraphQLNonNull
 
 import graphene
@@ -15,12 +16,22 @@ class MyNode(relay.Node):
     name = graphene.String()
 
     @classmethod
-    def get_node(cls, id):
+    def get_node(cls, id, info):
         return MyNode(id=id, name='mo')
 
 
+class SpecialNode(relay.Node):
+    value = graphene.String()
+
+    @classmethod
+    def get_node(cls, id, info):
+        value = "!!!" if info.request_context.get('is_special') else "???"
+        return SpecialNode(id=id, value=value)
+
+
 class Query(graphene.ObjectType):
     my_node = relay.NodeField(MyNode)
+    special_node = relay.NodeField(SpecialNode)
     all_my_nodes = relay.ConnectionField(
         MyNode, connection_type=MyConnection, customArg=graphene.String())
 
@@ -79,6 +90,28 @@ def test_nodefield_query():
     assert result.data == expected
 
 
+@pytest.mark.parametrize('specialness,value', [(True, '!!!'), (False, '???')])
+def test_get_node_info(specialness, value):
+    query = '''
+    query ValueQuery {
+      specialNode(id:"U3BlY2lhbE5vZGU6Mg==") {
+        id
+        value
+      }
+    }
+    '''
+
+    expected = {
+        'specialNode': {
+            'id': 'U3BlY2lhbE5vZGU6Mg==',
+            'value': value,
+        },
+    }
+    result = schema.execute(query, request_context={'is_special': specialness})
+    assert not result.errors
+    assert result.data == expected
+
+
 def test_nodeidfield():
     id_field = MyNode._meta.fields_map['id']
     id_field_type = schema.T(id_field)