Added ClientIDMutation. All examples working 💪

examples/starwars/schema.py

@@ -21,11 +21,15 @@ class Character(graphene.Interface):
         return [get_character(f) for f in self.friends]
 
 
-class Human(graphene.ObjectType, Character):
+class Human(graphene.ObjectType):
+    class Meta:
+        interfaces = (Character, )
     home_planet = graphene.String()
 
 
-class Droid(graphene.ObjectType, Character):
+class Droid(graphene.ObjectType):
+    class Meta:
+        interfaces = (Character, )
     primary_function = graphene.String()
 
 

examples/starwars_relay/schema.py

@@ -5,9 +5,11 @@ from .data import create_ship, get_empire, get_faction, get_rebels, get_ship
 
 
 class Ship(graphene.ObjectType):
-    class Meta:
-        interfaces = [relay.Node]
     '''A ship in the Star Wars saga'''
+
+    class Meta:
+        interfaces = (relay.Node, )
+
     name = graphene.String(description='The name of the ship.')
 
     @classmethod
@@ -15,8 +17,12 @@ class Ship(graphene.ObjectType):
         return get_ship(id)
 
 
-class Faction(relay.Node, graphene.ObjectType):
+class Faction(graphene.ObjectType):
     '''A faction in the Star Wars saga'''
+
+    class Meta:
+        interfaces = (relay.Node, )
+
     name = graphene.String(description='The name of the faction.')
     ships = relay.ConnectionField(Ship, description='The ships used by the faction.')
 

examples/starwars_relay/tests/test_objectidentification.py

@@ -4,6 +4,67 @@ from ..schema import schema
 setup()
 
 
+def test_str_schema():
+    assert str(schema) == '''schema {
+  query: Query
+  mutation: Mutation
+}
+
+type Faction implements Node {
+  id: ID!
+  name: String
+  ships(before: String, after: String, first: Int, last: Int): ShipConnection
+}
+
+input IntroduceShipInput {
+  shipName: String!
+  factionId: String!
+  clientMutationId: String
+}
+
+type IntroduceShipPayload {
+  ship: Ship
+  faction: Faction
+}
+
+type Mutation {
+  introduceShip(input: IntroduceShipInput): IntroduceShipPayload
+}
+
+interface Node {
+  id: ID!
+}
+
+type PageInfo {
+  hasNextPage: Boolean!
+  hasPreviousPage: Boolean!
+  startCursor: String
+  endCursor: String
+}
+
+type Query {
+  rebels: Faction
+  empire: Faction
+  node(id: ID!): Node
+}
+
+type Ship implements Node {
+  id: ID!
+  name: String
+}
+
+type ShipConnection {
+  pageInfo: PageInfo!
+  edges: [ShipEdge]
+}
+
+type ShipEdge {
+  node: Ship
+  cursor: String!
+}
+'''
+
+
 def test_correctly_fetches_id_name_rebels():
     query = '''
       query RebelsQuery {

graphene/relay/__init__.py

@@ -1,10 +1,10 @@
 from .node import Node
-# from .mutation import ClientIDMutation
+from .mutation import ClientIDMutation
 from .connection import Connection, ConnectionField
 
 __all__ = [
     'Node',
-    # 'ClientIDMutation',
+    'ClientIDMutation',
     'Connection',
     'ConnectionField',
 ]

graphene/relay/connection.py

@@ -5,9 +5,8 @@ from functools import partial
 import six
 
 from graphql_relay import connection_from_list
-from graphql_relay.connection.connection import connection_args
 
-from ..types import Boolean, String, List
+from ..types import Boolean, String, List, Int
 from ..types.field import Field
 from ..types.objecttype import ObjectType, ObjectTypeMeta
 from ..types.options import Options
@@ -15,7 +14,7 @@ from ..utils.is_base_type import is_base_type
 from ..utils.props import props
 from .node import Node
 
-from ..types.utils import get_fields_in_type, yank_fields_from_attrs, merge_fields_in_attrs
+from ..types.utils import get_fields_in_type, yank_fields_from_attrs
 
 
 def is_node(objecttype):
@@ -81,9 +80,14 @@ class ConnectionMeta(ObjectTypeMeta):
             ('cursor', Field(String, required=True, description='A cursor for use in pagination'))
         ])
         edge_attrs = props(edge_class) if edge_class else OrderedDict()
-        edge_fields.update(get_fields_in_type(ObjectType, edge_attrs))
-        EdgeMeta = type('Meta', (object, ), {'fields': edge_fields})
-        Edge = type('{}Edge'.format(base_name), (ObjectType,), {'Meta': EdgeMeta})
+        extended_edge_fields = get_fields_in_type(ObjectType, edge_attrs)
+        edge_fields.update(extended_edge_fields)
+        EdgeMeta = type('Meta', (object, ), {
+            'fields': edge_fields,
+            'name': '{}Edge'.format(base_name)
+        })
+        yank_fields_from_attrs(edge_attrs, extended_edge_fields)
+        Edge = type('Edge', (ObjectType,), dict(edge_attrs, Meta=EdgeMeta))
 
         options.local_fields = OrderedDict([
             ('page_info', Field(PageInfo, name='pageInfo', required=True)),
@@ -101,9 +105,10 @@ class Connection(six.with_metaclass(ConnectionMeta, ObjectType)):
     resolve_node = None
     resolve_cursor = None
 
-    def __init__(self, *args, **kwargs):
-        kwargs['pageInfo'] = kwargs.pop('pageInfo', kwargs.pop('page_info'))
-        super(Connection, self).__init__(*args, **kwargs)
+    # def __init__(self, *args, **kwargs):
+    #     super(Connection, self).__init__(*args, **kwargs)
+    #     print args, kwargs
+    #     print dir(self.page_info)
 
 
 class IterableConnectionField(Field):
@@ -118,17 +123,21 @@ class IterableConnectionField(Field):
 
         super(IterableConnectionField, self).__init__(
             type,
-            args=connection_args,
             *args,
+            before=String(),
+            after=String(),
+            first=Int(),
+            last=Int(),
             **kwargs
         )
 
     @property
-    def connection(self):
-        if is_node(self.type):
-            connection_type = self.type.Connection
+    def type(self):
+        type = super(IterableConnectionField, self).type
+        if is_node(type):
+            connection_type = type.Connection
         else:
-            connection_type = self.type
+            connection_type = type
         assert issubclass(connection_type, Connection), (
             '{} type have to be a subclass of Connection'
         ).format(str(self))
@@ -146,10 +155,11 @@ class IterableConnectionField(Field):
             args,
             connection_type=connection,
             edge_type=connection.Edge,
+            pageinfo_type=PageInfo
         )
         return connection
 
     def get_resolver(self, parent_resolver):
-        return partial(self.connection_resolver, parent_resolver, self.connection)
+        return partial(self.connection_resolver, parent_resolver, self.type)
 
 ConnectionField = IterableConnectionField

graphene/relay/mutation.py

@@ -0,0 +1,54 @@
+from functools import partial
+
+import six
+import re
+
+from promise import Promise
+
+from ..utils.is_base_type import is_base_type
+from ..utils.props import props
+from ..types import Field, String, InputObjectType, Argument
+from ..types.objecttype import ObjectType, ObjectTypeMeta
+
+
+class ClientIDMutationMeta(ObjectTypeMeta):
+
+    def __new__(cls, name, bases, attrs):
+        # Also ensure initialization is only performed for subclasses of
+        # Mutation
+        if not is_base_type(bases, ClientIDMutationMeta):
+            return type.__new__(cls, name, bases, attrs)
+
+        input_class = attrs.pop('Input', None)
+        base_name = re.sub('Payload$', '', name)
+        cls = ObjectTypeMeta.__new__(cls, '{}Payload'.format(base_name), bases, attrs)
+        mutate_and_get_payload = getattr(cls, 'mutate_and_get_payload', None)
+        if cls.mutate and cls.mutate.__func__ == ClientIDMutation.mutate.__func__: 
+            assert mutate_and_get_payload, (
+                "{}.mutate_and_get_payload method is required"
+                " in a ClientIDMutation."
+            ).format(name)
+        input_attrs = props(input_class) if input_class else {}
+        input_attrs['client_mutation_id'] = String(name='clientMutationId')
+        cls.Input = type('{}Input'.format(base_name), (InputObjectType,), input_attrs)
+        cls.Field = partial(Field, cls, resolver=cls.mutate, input=Argument(cls.Input))
+        return cls
+
+
+class ClientIDMutation(six.with_metaclass(ClientIDMutationMeta, ObjectType)):
+    @classmethod
+    def mutate(cls, root, args, context, info):
+        input = args.get('input')
+
+        def on_resolve(payload):
+            try:
+                payload.clientMutationId = input['clientMutationId']
+            except:
+                raise Exception((
+                    'Cannot set clientMutationId in the payload object {}'
+                ).format(repr(payload)))
+            return payload
+
+        return Promise.resolve(
+            cls.mutate_and_get_payload(input, context, info)
+        ).then(on_resolve)

graphene/relay/node.py

@@ -1,17 +1,55 @@
+import six
+from collections import OrderedDict
+from functools import partial
+
 from graphql_relay import from_global_id, to_global_id
-from ..types import Interface, ID, Field
+from ..types import ObjectType, Interface, ID, Field
+from ..types.interface import InterfaceMeta
 
 
-class Node(Interface):
+def get_default_connection(cls):
+    from .connection import Connection
+    assert issubclass(cls, ObjectType), (
+        'Can only get connection type on implemented Nodes.'
+    )
+
+    class Meta:
+        node = cls
+
+    return type('{}Connection'.format(cls.__name__), (Connection,), {'Meta': Meta})
+
+
+class GlobalID(Field):
+    def __init__(self, node, *args, **kwargs):
+        super(GlobalID, self).__init__(ID, *args, **kwargs)
+        self.node = node
+
+    @staticmethod
+    def id_resolver(parent_resolver, node, root, args, context, info):
+        id = parent_resolver(root, args, context, info)
+        # type_name = root._meta.name  # info.parent_type.name
+        return node.to_global_id(info.parent_type.name, id)
+
+    def get_resolver(self, parent_resolver):
+        return partial(self.id_resolver, parent_resolver, self.node)
+
+
+class NodeMeta(InterfaceMeta):
+
+    def __new__(cls, name, bases, attrs):
+        cls = InterfaceMeta.__new__(cls, name, bases, attrs)
+        cls._meta.fields['id'] = GlobalID(cls, required=True, description='The ID of the object.')
+        # new_fields = OrderedDict([
+        #     ('id', GlobalID(cls, required=True, description='The ID of the object.'))
+        # ])
+        # new_fields.update(cls._meta.fields)
+        # cls._meta.fields = new_fields
+        return cls
+
+
+class Node(six.with_metaclass(NodeMeta, Interface)):
     '''An object with an ID'''
 
-    id = ID(required=True, description='The ID of the object.')
-
-    @classmethod
-    def resolve_id(cls, root, args, context, info):
-        type_name = root._meta.name  # info.parent_type.name
-        return cls.to_global_id(type_name, getattr(root, 'id', None))
-
     @classmethod
     def Field(cls):
         def resolve_node(root, args, context, info):
@@ -45,13 +83,13 @@ class Node(Interface):
 
     @classmethod
     def implements(cls, objecttype):
-        require_get_node = Node in objecttype._meta.interfaces
-        # get_connection = getattr(objecttype, 'get_connection', None)
-        # if not get_connection:
-        #     get_connection = partial(get_default_connection, objecttype)
+        require_get_node = cls.get_node_from_global_id == Node.get_node_from_global_id
+        get_connection = getattr(objecttype, 'get_connection', None)
+        if not get_connection:
+            get_connection = partial(get_default_connection, objecttype)
 
-        # objecttype.Connection = get_connection()
+        objecttype.Connection = get_connection()
         if require_get_node:
-            assert hasattr(
-                objecttype, 'get_node'), '{}.get_node method is required by the Node interface.'.format(
-                objecttype.__name__)
+            assert hasattr(objecttype, 'get_node'), (
+                '{}.get_node method is required by the Node interface.'
+            ).format(objecttype.__name__)

graphene/relay/tests/test_mutation.py

@@ -0,0 +1,66 @@
+import pytest
+
+from ...types import ObjectType, Schema, Field, InputField, InputObjectType, Argument
+from ...types.scalars import String
+from ..mutation import ClientIDMutation
+
+
+class SaySomething(ClientIDMutation):
+
+    class Input:
+        what = String()
+    phrase = String()
+
+    @staticmethod
+    def mutate_and_get_payload(args, context, info):
+        what = args.get('what')
+        return SaySomething(phrase=str(what))
+
+
+class RootQuery(ObjectType):
+    something = String()
+
+
+class Mutation(ObjectType):
+    say = SaySomething.Field()
+
+schema = Schema(query=RootQuery, mutation=Mutation)
+
+
+def test_no_mutate_and_get_payload():
+    with pytest.raises(AssertionError) as excinfo:
+        class MyMutation(ClientIDMutation):
+            pass
+
+    assert "MyMutation.mutate_and_get_payload method is required in a ClientIDMutation." == str(
+        excinfo.value)
+
+
+def test_mutation():
+    fields = SaySomething._meta.fields
+    assert fields.keys() == ['phrase']
+    assert isinstance(fields['phrase'], Field)
+    field = SaySomething.Field()
+    assert field.type == SaySomething
+    assert field.args.keys() == ['input']
+    assert isinstance(field.args['input'], Argument)
+    assert field.args['input'].type == SaySomething.Input
+
+
+def test_mutation_input():
+    Input = SaySomething.Input
+    assert issubclass(Input, InputObjectType)
+    fields = Input._meta.fields
+    assert fields.keys() == ['what', 'client_mutation_id']
+    assert isinstance(fields['what'], InputField)
+    assert fields['what'].type == String
+    assert isinstance(fields['client_mutation_id'], InputField)
+    assert fields['client_mutation_id'].type == String
+
+
+# def test_node_query():
+#     executed = schema.execute(
+#         'mutation a { say(input: {what:"hello", clientMutationId:"1"}) { phrase } }'
+#     )
+#     assert not executed.errors
+#     assert executed.data == {'say': {'phrase': 'hello'}}

graphene/relay/tests/test_node.py

@@ -3,8 +3,7 @@ import pytest
 from graphql_relay import to_global_id
 
 from ...types import ObjectType, Schema, String
-# from ...types.scalars import String
-# from ..connection import Connection
+from ..connection import Connection
 from ..node import Node
 
 
@@ -47,13 +46,13 @@ def test_node_good():
     assert 'id' in MyNode._meta.fields
 
 
-# def test_node_get_connection():
-#     connection = MyNode.Connection
-#     assert issubclass(connection, Connection)
+def test_node_get_connection():
+    connection = MyNode.Connection
+    assert issubclass(connection, Connection)
 
 
-# def test_node_get_connection_dont_duplicate():
-#     assert MyNode.Connection == MyNode.Connection
+def test_node_get_connection_dont_duplicate():
+    assert MyNode.Connection == MyNode.Connection
 
 
 def test_node_query():

graphene/types/inputobjecttype.py

@@ -5,6 +5,7 @@ from .options import Options
 
 from .abstracttype import AbstractTypeMeta
 from .utils import get_fields_in_type, yank_fields_from_attrs, merge_fields_in_attrs
+from .unmountedtype import UnmountedType
 
 
 class InputObjectTypeMeta(AbstractTypeMeta):
@@ -19,11 +20,13 @@ class InputObjectTypeMeta(AbstractTypeMeta):
             attrs.pop('Meta', None),
             name=name,
             description=attrs.get('__doc__'),
+            fields=None,
         )
 
         attrs = merge_fields_in_attrs(bases, attrs)
-        options.fields = get_fields_in_type(InputObjectType, attrs)
-        yank_fields_from_attrs(attrs, options.fields)
+        if not options.fields:
+            options.fields = get_fields_in_type(InputObjectType, attrs)
+            yank_fields_from_attrs(attrs, options.fields)
 
         return type.__new__(cls, name, bases, dict(attrs, _meta=options))
 
@@ -31,6 +34,9 @@ class InputObjectTypeMeta(AbstractTypeMeta):
         return cls._meta.name
 
 
-class InputObjectType(six.with_metaclass(InputObjectTypeMeta)):
-    def __init__(self, *args, **kwargs):
-        raise Exception("An InputObjectType cannot be intitialized")
+class InputObjectType(six.with_metaclass(InputObjectTypeMeta, UnmountedType)):
+    @classmethod
+    def get_type(cls):
+        return cls
+    # def __init__(self, *args, **kwargs):
+    #     raise Exception("An InputObjectType cannot be intitialized")

graphene/types/interface.py

@@ -19,11 +19,13 @@ class InterfaceMeta(AbstractTypeMeta):
             attrs.pop('Meta', None),
             name=name,
             description=attrs.get('__doc__'),
+            fields=None,
         )
 
         attrs = merge_fields_in_attrs(bases, attrs)
-        options.fields = get_fields_in_type(Interface, attrs)
-        yank_fields_from_attrs(attrs, options.fields)
+        if not options.fields:
+            options.fields = get_fields_in_type(Interface, attrs)
+            yank_fields_from_attrs(attrs, options.fields)
 
         return type.__new__(cls, name, bases, dict(attrs, _meta=options))
 

graphene/types/objecttype.py

@@ -22,20 +22,21 @@ class ObjectTypeMeta(AbstractTypeMeta):
             name=name,
             description=attrs.get('__doc__'),
             interfaces=(),
-            fields=OrderedDict(),
+            fields=None,
         )
 
         attrs = merge_fields_in_attrs(bases, attrs)
-        options.local_fields = get_fields_in_type(ObjectType, attrs)
-        yank_fields_from_attrs(attrs, options.local_fields)
-        options.interface_fields = OrderedDict()
-        for interface in options.interfaces:
-            assert issubclass(interface, Interface), (
-                'All interfaces of {} must be a subclass of Interface. Received "{}".'
-            ).format(name, interface)
-            options.interface_fields.update(interface._meta.fields)
-        options.fields.update(options.interface_fields)
-        options.fields.update(options.local_fields)
+        if not options.fields:
+            options.local_fields = get_fields_in_type(ObjectType, attrs)
+            yank_fields_from_attrs(attrs, options.local_fields)
+            options.interface_fields = OrderedDict()
+            for interface in options.interfaces:
+                assert issubclass(interface, Interface), (
+                    'All interfaces of {} must be a subclass of Interface. Received "{}".'
+                ).format(name, interface)
+                options.interface_fields.update(interface._meta.fields)
+            options.fields = OrderedDict(options.interface_fields)
+            options.fields.update(options.local_fields)
 
         cls = type.__new__(cls, name, bases, dict(attrs, _meta=options))
         for interface in options.interfaces: