Merge branch 'refs/heads/master' into feature/adam-django

graphene/__init__.py

@@ -11,7 +11,7 @@ from .core import (
     Interface,
     Mutation,
     Scalar,
-    BaseType,
+    InstanceType,
     LazyType,
     Argument,
     Field,
@@ -51,7 +51,7 @@ __all__ = [
     'NonNull',
     'signals',
     'Schema',
-    'BaseType',
+    'InstanceType',
     'LazyType',
     'ObjectType',
     'InputObjectType',

graphene/contrib/django/debug/__init__.py

@@ -0,0 +1,4 @@
+from .plugin import DjangoDebugPlugin
+from .types import DjangoDebug
+
+__all__ = ['DjangoDebugPlugin', 'DjangoDebug']

graphene/contrib/django/debug/plugin.py

@@ -0,0 +1,79 @@
+from contextlib import contextmanager
+
+from django.db import connections
+
+from ....core.types import Field
+from ....core.schema import GraphQLSchema
+from ....plugins import Plugin
+from .sql.tracking import unwrap_cursor, wrap_cursor
+from .sql.types import DjangoDebugSQL
+from .types import DjangoDebug
+
+
+class WrappedRoot(object):
+
+    def __init__(self, root):
+        self._recorded = []
+        self._root = root
+
+    def record(self, **log):
+        self._recorded.append(DjangoDebugSQL(**log))
+
+    def debug(self):
+        return DjangoDebug(sql=self._recorded)
+
+
+class WrapRoot(object):
+
+    @property
+    def _root(self):
+        return self._wrapped_root.root
+
+    @_root.setter
+    def _root(self, value):
+        self._wrapped_root = value
+
+    def resolve_debug(self, args, info):
+        return self._wrapped_root.debug()
+
+
+def debug_objecttype(objecttype):
+    return type(
+        'Debug{}'.format(objecttype._meta.type_name),
+        (WrapRoot, objecttype),
+        {'debug': Field(DjangoDebug, name='__debug')})
+
+
+class DjangoDebugPlugin(Plugin):
+
+    def enable_instrumentation(self, wrapped_root):
+        # This is thread-safe because database connections are thread-local.
+        for connection in connections.all():
+            wrap_cursor(connection, wrapped_root)
+
+    def disable_instrumentation(self):
+        for connection in connections.all():
+            unwrap_cursor(connection)
+
+    def wrap_schema(self, schema_type):
+        query = schema_type._query
+        if query:
+            class_type = self.schema.objecttype(schema_type.get_query_type())
+            assert class_type, 'The query in schema is not constructed with graphene'
+            _type = debug_objecttype(class_type)
+            self.schema.register(_type, force=True)
+            return GraphQLSchema(
+                self.schema,
+                self.schema.T(_type),
+                schema_type.get_mutation_type(),
+                schema_type.get_subscription_type()
+            )
+        return schema_type
+
+    @contextmanager
+    def context_execution(self, executor):
+        executor['root'] = WrappedRoot(root=executor['root'])
+        executor['schema'] = self.wrap_schema(executor['schema'])
+        self.enable_instrumentation(executor['root'])
+        yield executor
+        self.disable_instrumentation()

graphene/contrib/django/debug/sql/tracking.py

@@ -0,0 +1,165 @@
+# Code obtained from django-debug-toolbar sql panel tracking
+from __future__ import absolute_import, unicode_literals
+
+import json
+from threading import local
+from time import time
+
+from django.utils import six
+from django.utils.encoding import force_text
+
+
+class SQLQueryTriggered(Exception):
+    """Thrown when template panel triggers a query"""
+
+
+class ThreadLocalState(local):
+
+    def __init__(self):
+        self.enabled = True
+
+    @property
+    def Wrapper(self):
+        if self.enabled:
+            return NormalCursorWrapper
+        return ExceptionCursorWrapper
+
+    def recording(self, v):
+        self.enabled = v
+
+
+state = ThreadLocalState()
+recording = state.recording  # export function
+
+
+def wrap_cursor(connection, panel):
+    if not hasattr(connection, '_djdt_cursor'):
+        connection._djdt_cursor = connection.cursor
+
+        def cursor():
+            return state.Wrapper(connection._djdt_cursor(), connection, panel)
+
+        connection.cursor = cursor
+        return cursor
+
+
+def unwrap_cursor(connection):
+    if hasattr(connection, '_djdt_cursor'):
+        del connection._djdt_cursor
+        del connection.cursor
+
+
+class ExceptionCursorWrapper(object):
+    """
+    Wraps a cursor and raises an exception on any operation.
+    Used in Templates panel.
+    """
+
+    def __init__(self, cursor, db, logger):
+        pass
+
+    def __getattr__(self, attr):
+        raise SQLQueryTriggered()
+
+
+class NormalCursorWrapper(object):
+    """
+    Wraps a cursor and logs queries.
+    """
+
+    def __init__(self, cursor, db, logger):
+        self.cursor = cursor
+        # Instance of a BaseDatabaseWrapper subclass
+        self.db = db
+        # logger must implement a ``record`` method
+        self.logger = logger
+
+    def _quote_expr(self, element):
+        if isinstance(element, six.string_types):
+            return "'%s'" % force_text(element).replace("'", "''")
+        else:
+            return repr(element)
+
+    def _quote_params(self, params):
+        if not params:
+            return params
+        if isinstance(params, dict):
+            return dict((key, self._quote_expr(value))
+                        for key, value in params.items())
+        return list(map(self._quote_expr, params))
+
+    def _decode(self, param):
+        try:
+            return force_text(param, strings_only=True)
+        except UnicodeDecodeError:
+            return '(encoded string)'
+
+    def _record(self, method, sql, params):
+        start_time = time()
+        try:
+            return method(sql, params)
+        finally:
+            stop_time = time()
+            duration = (stop_time - start_time)
+            _params = ''
+            try:
+                _params = json.dumps(list(map(self._decode, params)))
+            except Exception:
+                pass  # object not JSON serializable
+
+            alias = getattr(self.db, 'alias', 'default')
+            conn = self.db.connection
+            vendor = getattr(conn, 'vendor', 'unknown')
+
+            params = {
+                'vendor': vendor,
+                'alias': alias,
+                'sql': self.db.ops.last_executed_query(
+                    self.cursor, sql, self._quote_params(params)),
+                'duration': duration,
+                'raw_sql': sql,
+                'params': _params,
+                'start_time': start_time,
+                'stop_time': stop_time,
+                'is_slow': duration > 10,
+                'is_select': sql.lower().strip().startswith('select'),
+            }
+
+            if vendor == 'postgresql':
+                # If an erroneous query was ran on the connection, it might
+                # be in a state where checking isolation_level raises an
+                # exception.
+                try:
+                    iso_level = conn.isolation_level
+                except conn.InternalError:
+                    iso_level = 'unknown'
+                params.update({
+                    'trans_id': self.logger.get_transaction_id(alias),
+                    'trans_status': conn.get_transaction_status(),
+                    'iso_level': iso_level,
+                    'encoding': conn.encoding,
+                })
+
+            # We keep `sql` to maintain backwards compatibility
+            self.logger.record(**params)
+
+    def callproc(self, procname, params=()):
+        return self._record(self.cursor.callproc, procname, params)
+
+    def execute(self, sql, params=()):
+        return self._record(self.cursor.execute, sql, params)
+
+    def executemany(self, sql, param_list):
+        return self._record(self.cursor.executemany, sql, param_list)
+
+    def __getattr__(self, attr):
+        return getattr(self.cursor, attr)
+
+    def __iter__(self):
+        return iter(self.cursor)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        self.close()

graphene/contrib/django/debug/sql/types.py

@@ -0,0 +1,19 @@
+from .....core import Float, ObjectType, String, Boolean
+
+
+class DjangoDebugSQL(ObjectType):
+    vendor = String()
+    alias = String()
+    sql = String()
+    duration = Float()
+    raw_sql = String()
+    params = String()
+    start_time = Float()
+    stop_time = Float()
+    is_slow = Boolean()
+    is_select = Boolean()
+
+    trans_id = String()
+    trans_status = String()
+    iso_level = String()
+    encoding = String()

graphene/contrib/django/debug/tests/test_query.py

@@ -0,0 +1,70 @@
+import pytest
+
+import graphene
+from graphene.contrib.django import DjangoObjectType
+
+from ...tests.models import Reporter
+from ..plugin import DjangoDebugPlugin
+
+# from examples.starwars_django.models import Character
+
+pytestmark = pytest.mark.django_db
+
+
+def test_should_query_well():
+    r1 = Reporter(last_name='ABA')
+    r1.save()
+    r2 = Reporter(last_name='Griffin')
+    r2.save()
+
+    class ReporterType(DjangoObjectType):
+
+        class Meta:
+            model = Reporter
+
+    class Query(graphene.ObjectType):
+        reporter = graphene.Field(ReporterType)
+        all_reporters = ReporterType.List()
+
+        def resolve_all_reporters(self, *args, **kwargs):
+            return Reporter.objects.all()
+
+        def resolve_reporter(self, *args, **kwargs):
+            return Reporter.objects.first()
+
+    query = '''
+        query ReporterQuery {
+          reporter {
+            lastName
+          }
+          allReporters {
+            lastName
+          }
+          __debug {
+            sql {
+              rawSql
+            }
+          }
+        }
+    '''
+    expected = {
+        'reporter': {
+            'lastName': 'ABA',
+        },
+        'allReporters': [{
+            'lastName': 'ABA',
+        }, {
+            'lastName': 'Griffin',
+        }],
+        '__debug': {
+            'sql': [{
+                'rawSql': str(Reporter.objects.order_by('pk')[:1].query)
+            }, {
+                'rawSql': str(Reporter.objects.all().query)
+            }]
+        }
+    }
+    schema = graphene.Schema(query=Query, plugins=[DjangoDebugPlugin()])
+    result = schema.execute(query)
+    assert not result.errors
+    assert result.data == expected

graphene/contrib/django/debug/types.py

@@ -0,0 +1,7 @@
+from ....core.classtypes.objecttype import ObjectType
+from ....core.types import Field
+from .sql.types import DjangoDebugSQL
+
+
+class DjangoDebug(ObjectType):
+    sql = Field(DjangoDebugSQL.List())

graphene/contrib/django/tests/test_urls.py

@@ -29,7 +29,15 @@ class Human(DjangoNode):
     def get_node(self, id):
         pass
 
-schema = Schema(query=Human)
+
+class Query(graphene.ObjectType):
+    human = graphene.Field(Human)
+
+    def resolve_human(self, args, info):
+        return Human()
+
+
+schema = Schema(query=Query)
 
 
 urlpatterns = [

graphene/contrib/django/tests/test_views.py

@@ -7,11 +7,13 @@ def format_response(response):
 
 def test_client_get_good_query(settings, client):
     settings.ROOT_URLCONF = 'graphene.contrib.django.tests.test_urls'
-    response = client.get('/graphql', {'query': '{ headline }'})
+    response = client.get('/graphql', {'query': '{ human { headline } }'})
     json_response = format_response(response)
     expected_json = {
         'data': {
-            'headline': None
+            'human': {
+                'headline': None
+            }
         }
     }
     assert json_response == expected_json
@@ -19,20 +21,22 @@ def test_client_get_good_query(settings, client):
 
 def test_client_get_good_query_with_raise(settings, client):
     settings.ROOT_URLCONF = 'graphene.contrib.django.tests.test_urls'
-    response = client.get('/graphql', {'query': '{ raises }'})
+    response = client.get('/graphql', {'query': '{ human { raises } }'})
     json_response = format_response(response)
     assert json_response['errors'][0]['message'] == 'This field should raise exception'
-    assert json_response['data']['raises'] is None
+    assert json_response['data']['human']['raises'] is None
 
 
 def test_client_post_good_query_json(settings, client):
     settings.ROOT_URLCONF = 'graphene.contrib.django.tests.test_urls'
     response = client.post(
-        '/graphql', json.dumps({'query': '{ headline }'}), 'application/json')
+        '/graphql', json.dumps({'query': '{ human { headline } }'}), 'application/json')
     json_response = format_response(response)
     expected_json = {
         'data': {
-            'headline': None
+            'human': {
+                'headline': None
+            }
         }
     }
     assert json_response == expected_json
@@ -41,11 +45,13 @@ def test_client_post_good_query_json(settings, client):
 def test_client_post_good_query_graphql(settings, client):
     settings.ROOT_URLCONF = 'graphene.contrib.django.tests.test_urls'
     response = client.post(
-        '/graphql', '{ headline }', 'application/graphql')
+        '/graphql', '{ human { headline } }', 'application/graphql')
     json_response = format_response(response)
     expected_json = {
         'data': {
-            'headline': None
+            'human': {
+                'headline': None
+            }
         }
     }
     assert json_response == expected_json

graphene/contrib/django/views.py

@@ -12,5 +12,5 @@ class GraphQLView(BaseGraphQLView):
             **kwargs
         )
 
-    def get_root_value(self, request):
+    def execute(self, *args, **kwargs):
-        return self.graphene_schema.query(super(GraphQLView, self).get_root_value(request))
+        return self.graphene_schema.execute(*args, **kwargs)

graphene/core/__init__.py

@@ -11,7 +11,7 @@ from .classtypes import (
 )
 
 from .types import (
-    BaseType,
+    InstanceType,
     LazyType,
     Argument,
     Field,
@@ -35,7 +35,7 @@ __all__ = [
     'List',
     'NonNull',
     'Schema',
-    'BaseType',
+    'InstanceType',
     'LazyType',
     'ObjectType',
     'InputObjectType',

graphene/core/classtypes/base.py

@@ -1,11 +1,10 @@
 import copy
 import inspect
-from functools import partial
 from collections import OrderedDict
+from functools import partial
 
 import six
 
-from ..exceptions import SkipField
 from .options import Options
 
 
@@ -82,13 +81,18 @@ class FieldsOptions(Options):
     def fields_map(self):
         return OrderedDict([(f.attname, f) for f in self.fields])
 
+    @property
+    def fields_group_type(self):
+        from ..types.field import FieldsGroupType
+        return FieldsGroupType(*self.local_fields)
+
 
 class FieldsClassTypeMeta(ClassTypeMeta):
     options_class = FieldsOptions
 
     def extend_fields(cls, bases):
         new_fields = cls._meta.local_fields
-        field_names = {f.name: f for f in new_fields}
+        field_names = {f.attname: f for f in new_fields}
 
         for base in bases:
             if not isinstance(base, FieldsClassTypeMeta):
@@ -96,17 +100,17 @@ class FieldsClassTypeMeta(ClassTypeMeta):
 
             parent_fields = base._meta.local_fields
             for field in parent_fields:
-                if field.name in field_names and field.type.__class__ != field_names[
+                if field.attname in field_names and field.type.__class__ != field_names[
-                        field.name].type.__class__:
+                        field.attname].type.__class__:
                     raise Exception(
                         'Local field %r in class %r (%r) clashes '
                         'with field with similar name from '
                         'Interface %s (%r)' % (
-                            field.name,
+                            field.attname,
                             cls.__name__,
                             field.__class__,
                             base.__name__,
-                            field_names[field.name].__class__)
+                            field_names[field.attname].__class__)
                     )
                 new_field = copy.copy(field)
                 cls.add_to_class(field.attname, new_field)
@@ -124,11 +128,4 @@ class FieldsClassType(six.with_metaclass(FieldsClassTypeMeta, ClassType)):
 
     @classmethod
     def fields_internal_types(cls, schema):
-        fields = []
+        return schema.T(cls._meta.fields_group_type)
-        for field in cls._meta.fields:
-            try:
-                fields.append((field.name, schema.T(field)))
-            except SkipField:
-                continue
-
-        return OrderedDict(fields)

graphene/core/classtypes/tests/test_mutation.py

@@ -24,4 +24,4 @@ def test_mutation():
     assert list(object_type.get_fields().keys()) == ['name']
     assert MyMutation._meta.fields_map['name'].object_type == MyMutation
     assert isinstance(MyMutation.arguments, ArgumentsGroup)
-    assert 'argName' in MyMutation.arguments
+    assert 'argName' in schema.T(MyMutation.arguments)

graphene/core/schema.py

@@ -10,8 +10,9 @@ from graphql.core.utils.schema_printer import print_schema
 
 from graphene import signals
 
+from ..plugins import CamelCase, PluginManager
 from .classtypes.base import ClassType
-from .types.base import BaseType
+from .types.base import InstanceType
 
 
 class GraphQLSchema(_GraphQLSchema):
@@ -25,7 +26,7 @@ class Schema(object):
     _executor = None
 
     def __init__(self, query=None, mutation=None, subscription=None,
-                 name='Schema', executor=None):
+                 name='Schema', executor=None, plugins=None, auto_camelcase=True):
         self._types_names = {}
         self._types = {}
         self.mutation = mutation
@@ -33,27 +34,34 @@ class Schema(object):
         self.subscription = subscription
         self.name = name
         self.executor = executor
+        plugins = plugins or []
+        if auto_camelcase:
+            plugins.append(CamelCase())
+        self.plugins = PluginManager(self, plugins)
         signals.init_schema.send(self)
 
     def __repr__(self):
         return '<Schema: %s (%s)>' % (str(self.name), hash(self))
 
-    def T(self, object_type):
+    def __getattr__(self, name):
-        if not object_type:
+        if name in self.plugins:
+            return getattr(self.plugins, name)
+        return super(Schema, self).__getattr__(name)
+
+    def T(self, _type):
+        if not _type:
             return
-        if inspect.isclass(object_type) and issubclass(
+        is_classtype = inspect.isclass(_type) and issubclass(_type, ClassType)
-                object_type, (BaseType, ClassType)) or isinstance(
+        is_instancetype = isinstance(_type, InstanceType)
-                object_type, BaseType):
+        if is_classtype or is_instancetype:
-            if object_type not in self._types:
+            if _type not in self._types:
-                internal_type = object_type.internal_type(self)
+                internal_type = _type.internal_type(self)
-                self._types[object_type] = internal_type
+                self._types[_type] = internal_type
-                is_objecttype = inspect.isclass(
+                if is_classtype:
-                    object_type) and issubclass(object_type, ClassType)
+                    self.register(_type)
-                if is_objecttype:
+            return self._types[_type]
-                    self.register(object_type)
-            return self._types[object_type]
         else:
-            return object_type
+            return _type
 
     @property
     def executor(self):
@@ -76,9 +84,9 @@ class Schema(object):
             mutation=self.T(self.mutation),
             subscription=self.T(self.subscription))
 
-    def register(self, object_type):
+    def register(self, object_type, force=False):
         type_name = object_type._meta.type_name
-        registered_object_type = self._types_names.get(type_name, None)
+        registered_object_type = not force and self._types_names.get(type_name, None)
         if registered_object_type:
             assert registered_object_type == object_type, 'Type {} already registered with other object type'.format(
                 type_name)
@@ -110,17 +118,10 @@ class Schema(object):
     def types(self):
         return self._types_names
 
-    def execute(self, request='', root=None, vars=None,
+    def execute(self, request='', root=None, args=None, **kwargs):
-                operation_name=None, **kwargs):
+        kwargs = dict(kwargs, request=request, root=root, args=args, schema=self.schema)
-        root = root or object()
+        with self.plugins.context_execution(**kwargs) as execute_kwargs:
-        return self.executor.execute(
+            return self.executor.execute(**execute_kwargs)
-            self.schema,
-            request,
-            root=root,
-            args=vars,
-            operation_name=operation_name,
-            **kwargs
-        )
 
     def introspect(self):
         return self.execute(introspection_query).data

graphene/core/tests/test_old_fields.py

@@ -34,10 +34,11 @@ def test_field_type():
     assert schema.T(f).type == GraphQLString
 
 
-def test_field_name_automatic_camelcase():
+def test_field_name():
     f = Field(GraphQLString)
     f.contribute_to_class(MyOt, 'field_name')
-    assert f.name == 'fieldName'
+    assert f.name is None
+    assert f.attname == 'field_name'
 
 
 def test_field_name_use_name_if_exists():

graphene/core/types/__init__.py

@@ -1,14 +1,14 @@
-from .base import BaseType, LazyType, OrderedType
+from .base import InstanceType, LazyType, OrderedType
 from .argument import Argument, ArgumentsGroup, to_arguments
 from .definitions import List, NonNull
 # Compatibility import
 from .objecttype import Interface, ObjectType, Mutation, InputObjectType
 
-from .scalars import String, ID, Boolean, Int, Float, Scalar
+from .scalars import String, ID, Boolean, Int, Float
 from .field import Field, InputField
 
 __all__ = [
-    'BaseType',
+    'InstanceType',
     'LazyType',
     'OrderedType',
     'Argument',
@@ -26,5 +26,4 @@ __all__ = [
     'ID',
     'Boolean',
     'Int',
-    'Float',
+    'Float']
-    'Scalar']

graphene/core/types/argument.py

@@ -1,19 +1,17 @@
-from collections import OrderedDict
 from functools import wraps
 from itertools import chain
 
 from graphql.core.type import GraphQLArgument
 
-from ...utils import ProxySnakeDict, to_camel_case
+from ...utils import ProxySnakeDict
-from .base import ArgumentType, BaseType, OrderedType
+from .base import ArgumentType, GroupNamedType, NamedType, OrderedType
 
 
-class Argument(OrderedType):
+class Argument(NamedType, OrderedType):
 
     def __init__(self, type, description=None, default=None,
                  name=None, _creation_counter=None):
-        super(Argument, self).__init__(_creation_counter=_creation_counter)
+        super(Argument, self).__init__(name=name, _creation_counter=_creation_counter)
-        self.name = name
         self.type = type
         self.description = description
         self.default = default
@@ -27,47 +25,32 @@ class Argument(OrderedType):
         return self.name
 
 
-class ArgumentsGroup(BaseType):
+class ArgumentsGroup(GroupNamedType):
 
     def __init__(self, *args, **kwargs):
         arguments = to_arguments(*args, **kwargs)
-        self.arguments = OrderedDict([(arg.name, arg) for arg in arguments])
+        super(ArgumentsGroup, self).__init__(*arguments)
-
-    def internal_type(self, schema):
-        return OrderedDict([(arg.name, schema.T(arg))
-                            for arg in self.arguments.values()])
-
-    def __len__(self):
-        return len(self.arguments)
-
-    def __iter__(self):
-        return iter(self.arguments)
-
-    def __contains__(self, *args):
-        return self.arguments.__contains__(*args)
-
-    def __getitem__(self, *args):
-        return self.arguments.__getitem__(*args)
 
 
 def to_arguments(*args, **kwargs):
     arguments = {}
     iter_arguments = chain(kwargs.items(), [(None, a) for a in args])
 
-    for name, arg in iter_arguments:
+    for default_name, arg in iter_arguments:
         if isinstance(arg, Argument):
             argument = arg
         elif isinstance(arg, ArgumentType):
             argument = arg.as_argument()
         else:
-            raise ValueError('Unknown argument %s=%r' % (name, arg))
+            raise ValueError('Unknown argument %s=%r' % (default_name, arg))
 
-        if name:
+        if default_name:
-            argument.name = to_camel_case(name)
+            argument.default_name = default_name
-        assert argument.name, 'Argument in field must have a name'
+
-        assert argument.name not in arguments, 'Found more than one Argument with same name {}'.format(
+        name = argument.name or argument.default_name
-            argument.name)
+        assert name, 'Argument in field must have a name'
-        arguments[argument.name] = argument
+        assert name not in arguments, 'Found more than one Argument with same name {}'.format(name)
+        arguments[name] = argument
 
     return sorted(arguments.values())
 

graphene/core/types/base.py

@@ -1,16 +1,16 @@
-from functools import total_ordering
+from collections import OrderedDict
+from functools import partial, total_ordering
 
 import six
 
 
-class BaseType(object):
+class InstanceType(object):
 
-    @classmethod
+    def internal_type(self, schema):
-    def internal_type(cls, schema):
+        raise NotImplementedError("internal_type for type {} is not implemented".format(self.__class__.__name__))
-        return getattr(cls, 'T', None)
 
 
-class MountType(BaseType):
+class MountType(InstanceType):
     parent = None
 
     def mount(self, cls):
@@ -126,3 +126,39 @@ class FieldType(MirroredType):
 
 class MountedType(FieldType, ArgumentType):
     pass
+
+
+class NamedType(InstanceType):
+
+    def __init__(self, name=None, default_name=None, *args, **kwargs):
+        self.name = name
+        self.default_name = None
+        super(NamedType, self).__init__(*args, **kwargs)
+
+
+class GroupNamedType(InstanceType):
+
+    def __init__(self, *types):
+        self.types = types
+
+    def get_named_type(self, schema, type):
+        name = type.name or schema.get_default_namedtype_name(type.default_name)
+        return name, schema.T(type)
+
+    def iter_types(self, schema):
+        return map(partial(self.get_named_type, schema), self.types)
+
+    def internal_type(self, schema):
+        return OrderedDict(self.iter_types(schema))
+
+    def __len__(self):
+        return len(self.types)
+
+    def __iter__(self):
+        return iter(self.types)
+
+    def __contains__(self, *args):
+        return self.types.__contains__(*args)
+
+    def __getitem__(self, *args):
+        return self.types.__getitem__(*args)

graphene/core/types/field.py

@@ -4,23 +4,25 @@ from functools import wraps
 import six
 from graphql.core.type import GraphQLField, GraphQLInputObjectField
 
-from ...utils import to_camel_case
 from ..classtypes.base import FieldsClassType
 from ..classtypes.inputobjecttype import InputObjectType
 from ..classtypes.mutation import Mutation
-from .argument import ArgumentsGroup, snake_case_args
+from ..exceptions import SkipField
-from .base import LazyType, MountType, OrderedType
+from .argument import Argument, ArgumentsGroup, snake_case_args
+from .base import GroupNamedType, LazyType, MountType, NamedType, ArgumentType, OrderedType
 from .definitions import NonNull
 
 
-class Field(OrderedType):
+class Field(NamedType, OrderedType):
 
     def __init__(
             self, type, description=None, args=None, name=None, resolver=None,
             required=False, default=None, *args_list, **kwargs):
         _creation_counter = kwargs.pop('_creation_counter', None)
-        super(Field, self).__init__(_creation_counter=_creation_counter)
+        if isinstance(name, (Argument, ArgumentType)):
-        self.name = name
+            kwargs['name'] = name
+            name = None
+        super(Field, self).__init__(name=name, _creation_counter=_creation_counter)
         if isinstance(type, six.string_types):
             type = LazyType(type)
         self.required = required
@@ -36,9 +38,8 @@ class Field(OrderedType):
         assert issubclass(
             cls, (FieldsClassType)), 'Field {} cannot be mounted in {}'.format(
             self, cls)
-        if not self.name:
-            self.name = to_camel_case(attname)
         self.attname = attname
+        self.default_name = attname
         self.object_type = cls
         self.mount(cls)
         if isinstance(self.type, MountType):
@@ -117,12 +118,11 @@ class Field(OrderedType):
         return hash((self.creation_counter, self.object_type))
 
 
-class InputField(OrderedType):
+class InputField(NamedType, OrderedType):
 
     def __init__(self, type, description=None, default=None,
                  name=None, _creation_counter=None, required=False):
         super(InputField, self).__init__(_creation_counter=_creation_counter)
-        self.name = name
         if required:
             type = NonNull(type)
         self.type = type
@@ -133,9 +133,8 @@ class InputField(OrderedType):
         assert issubclass(
             cls, (InputObjectType)), 'InputField {} cannot be mounted in {}'.format(
             self, cls)
-        if not self.name:
-            self.name = to_camel_case(attname)
         self.attname = attname
+        self.default_name = attname
         self.object_type = cls
         self.mount(cls)
         if isinstance(self.type, MountType):
@@ -146,3 +145,13 @@ class InputField(OrderedType):
         return GraphQLInputObjectField(
             schema.T(self.type),
             default_value=self.default, description=self.description)
+
+
+class FieldsGroupType(GroupNamedType):
+
+    def iter_types(self, schema):
+        for field in sorted(self.types):
+            try:
+                yield self.get_named_type(schema, field)
+            except SkipField:
+                continue

graphene/core/types/scalars.py

@@ -1,41 +1,30 @@
 from graphql.core.type import (GraphQLBoolean, GraphQLFloat, GraphQLID,
-                               GraphQLInt, GraphQLScalarType, GraphQLString)
+                               GraphQLInt, GraphQLString)
 
 from .base import MountedType
 
 
-class String(MountedType):
+class ScalarType(MountedType):
-    T = GraphQLString
+
+    def internal_type(self, schema):
+        return self._internal_type
 
 
-class Int(MountedType):
+class String(ScalarType):
-    T = GraphQLInt
+    _internal_type = GraphQLString
 
 
-class Boolean(MountedType):
+class Int(ScalarType):
-    T = GraphQLBoolean
+    _internal_type = GraphQLInt
 
 
-class ID(MountedType):
+class Boolean(ScalarType):
-    T = GraphQLID
+    _internal_type = GraphQLBoolean
 
 
-class Float(MountedType):
+class ID(ScalarType):
-    T = GraphQLFloat
+    _internal_type = GraphQLID
 
 
-class Scalar(MountedType):
+class Float(ScalarType):
-
+    _internal_type = GraphQLFloat
-    @classmethod
-    def internal_type(cls, schema):
-        serialize = getattr(cls, 'serialize')
-        parse_literal = getattr(cls, 'parse_literal')
-        parse_value = getattr(cls, 'parse_value')
-
-        return GraphQLScalarType(
-            name=cls.__name__,
-            description=cls.__doc__,
-            serialize=serialize,
-            parse_value=parse_value,
-            parse_literal=parse_literal
-        )

graphene/core/types/tests/test_argument.py

@@ -27,8 +27,8 @@ def test_to_arguments():
         other_kwarg=String(),
     )
 
-    assert [a.name for a in arguments] == [
+    assert [a.name or a.default_name for a in arguments] == [
-        'myArg', 'otherArg', 'myKwarg', 'otherKwarg']
+        'myArg', 'otherArg', 'my_kwarg', 'other_kwarg']
 
 
 def test_to_arguments_no_name():

graphene/core/types/tests/test_field.py

@@ -13,14 +13,14 @@ from ..scalars import String
 def test_field_internal_type():
     resolver = lambda *args: 'RESOLVED'
 
-    field = Field(String, description='My argument', resolver=resolver)
+    field = Field(String(), description='My argument', resolver=resolver)
 
     class Query(ObjectType):
         my_field = field
     schema = Schema(query=Query)
 
     type = schema.T(field)
-    assert field.name == 'myField'
+    assert field.name is None
     assert field.attname == 'my_field'
     assert isinstance(type, GraphQLField)
     assert type.description == 'My argument'
@@ -98,9 +98,18 @@ def test_field_string_reference():
 
 def test_field_custom_arguments():
     field = Field(None, name='my_customName', p=String())
+    schema = Schema()
 
     args = field.arguments
-    assert 'p' in args
+    assert 'p' in schema.T(args)
+
+
+def test_field_name_as_argument():
+    field = Field(None, name=String())
+    schema = Schema()
+
+    args = field.arguments
+    assert 'name' in schema.T(args)
 
 
 def test_inputfield_internal_type():
@@ -115,8 +124,43 @@ def test_inputfield_internal_type():
     schema = Schema(query=MyObjectType)
 
     type = schema.T(field)
-    assert field.name == 'myField'
+    assert field.name is None
     assert field.attname == 'my_field'
     assert isinstance(type, GraphQLInputObjectField)
     assert type.description == 'My input field'
     assert type.default_value == '3'
+
+
+def test_field_resolve_argument():
+    resolver = lambda instance, args, info: args.get('first_name')
+
+    field = Field(String(), first_name=String(), description='My argument', resolver=resolver)
+
+    class Query(ObjectType):
+        my_field = field
+    schema = Schema(query=Query)
+
+    type = schema.T(field)
+    assert type.resolver(None, {'firstName': 'Peter'}, None) == 'Peter'
+
+
+def test_field_resolve_vars():
+    class Query(ObjectType):
+        hello = String(first_name=String())
+
+        def resolve_hello(self, args, info):
+            return 'Hello ' + args.get('first_name')
+
+    schema = Schema(query=Query)
+
+    result = schema.execute("""
+    query foo($firstName:String)
+    {
+            hello(firstName:$firstName)
+    }
+    """, args={"firstName": "Serkan"})
+
+    expected = {
+        'hello': 'Hello Serkan'
+    }
+    assert result.data == expected

graphene/core/types/tests/test_scalars.py

@@ -1,9 +1,9 @@
 from graphql.core.type import (GraphQLBoolean, GraphQLFloat, GraphQLID,
-                               GraphQLInt, GraphQLScalarType, GraphQLString)
+                               GraphQLInt, GraphQLString)
 
 from graphene.core.schema import Schema
 
-from ..scalars import ID, Boolean, Float, Int, Scalar, String
+from ..scalars import ID, Boolean, Float, Int, String
 
 schema = Schema()
 
@@ -26,29 +26,3 @@ def test_id_scalar():
 
 def test_float_scalar():
     assert schema.T(Float()) == GraphQLFloat
-
-
-def test_custom_scalar():
-    import datetime
-    from graphql.core.language import ast
-
-    class DateTimeScalar(Scalar):
-        '''DateTimeScalar Documentation'''
-        @staticmethod
-        def serialize(dt):
-            return dt.isoformat()
-
-        @staticmethod
-        def parse_literal(node):
-            if isinstance(node, ast.StringValue):
-                return datetime.datetime.strptime(
-                    node.value, "%Y-%m-%dT%H:%M:%S.%f")
-
-        @staticmethod
-        def parse_value(value):
-            return datetime.datetime.strptime(value, "%Y-%m-%dT%H:%M:%S.%f")
-
-    scalar_type = schema.T(DateTimeScalar)
-    assert isinstance(scalar_type, GraphQLScalarType)
-    assert scalar_type.name == 'DateTimeScalar'
-    assert scalar_type.description == 'DateTimeScalar Documentation'

graphene/plugins/__init__.py

@@ -0,0 +1,6 @@
+from .base import Plugin, PluginManager
+from .camel_case import CamelCase
+
+__all__ = [
+    'Plugin', 'PluginManager', 'CamelCase'
+]

graphene/plugins/base.py

@@ -0,0 +1,53 @@
+from contextlib import contextmanager
+from functools import partial, reduce
+
+
+class Plugin(object):
+
+    def contribute_to_schema(self, schema):
+        self.schema = schema
+
+
+def apply_function(a, b):
+    return b(a)
+
+
+class PluginManager(object):
+
+    PLUGIN_FUNCTIONS = ('get_default_namedtype_name', )
+
+    def __init__(self, schema, plugins=[]):
+        self.schema = schema
+        self.plugins = []
+        for plugin in plugins:
+            self.add_plugin(plugin)
+
+    def add_plugin(self, plugin):
+        if hasattr(plugin, 'contribute_to_schema'):
+            plugin.contribute_to_schema(self.schema)
+        self.plugins.append(plugin)
+
+    def get_plugin_functions(self, function):
+        for plugin in self.plugins:
+            if not hasattr(plugin, function):
+                continue
+            yield getattr(plugin, function)
+
+    def __getattr__(self, name):
+        functions = self.get_plugin_functions(name)
+        return partial(reduce, apply_function, functions)
+
+    def __contains__(self, name):
+        return name in self.PLUGIN_FUNCTIONS
+
+    @contextmanager
+    def context_execution(self, **executor):
+        contexts = []
+        functions = self.get_plugin_functions('context_execution')
+        for f in functions:
+            context = f(executor)
+            executor = context.__enter__()
+            contexts.append((context, executor))
+        yield executor
+        for context, value in contexts[::-1]:
+            context.__exit__(None, None, None)

graphene/plugins/camel_case.py

@@ -0,0 +1,7 @@
+from ..utils import to_camel_case
+
+
+class CamelCase(object):
+
+    def get_default_namedtype_name(self, value):
+        return to_camel_case(value)

graphene/relay/tests/test_mutations.py

@@ -34,8 +34,7 @@ schema = Schema(query=Query, mutation=MyResultMutation)
 
 def test_mutation_arguments():
     assert ChangeNumber.arguments
-    assert list(ChangeNumber.arguments) == ['input']
+    assert 'input' in schema.T(ChangeNumber.arguments)
-    assert 'input' in ChangeNumber.arguments
     inner_type = ChangeNumber.input_type
     client_mutation_id_field = inner_type._meta.fields_map[
         'client_mutation_id']

setup.py

@@ -24,9 +24,9 @@ class PyTest(TestCommand):
 
 setup(
     name='graphene',
-    version='0.4.3',
+    version='0.5.0',
 
-    description='Graphene: Python DSL for GraphQL',
+    description='GraphQL Framework for Python',
     long_description=open('README.rst').read(),
 
     url='https://github.com/graphql-python/graphene',
@@ -68,7 +68,7 @@ setup(
         'django': [
             'Django>=1.8.0',
             'singledispatch>=3.4.0.3',
-            'graphql-django-view>=1.0.0',
+            'graphql-django-view>=1.1.0',
         ],
     },