AttributeError：类型对象“用户”没有属性“名称”

Question

我是石墨烯的新手，我有这个：

from django.contrib.auth.models import User

class UserType(DjangoObjectType):
    class Meta:
        model = User

基本上，使用 Django 的 User 类会给我这个错误，因为在使用 django User 类之前，我使用的是我自己的 User 定义并且它有效。为什么使用 django 身份验证框架中的 User 类给了我标题中提到的错误：

文件“/usr/local/lib/python3.6/site-packages/graphql/type/typemap.py”, 第 60 行，如果 type.name in map: AttributeError: type object 在 reducer ‘用户’没有属性‘名称’

我错过了什么吗？

问候

PD：我使用的是 Django 2.0.4

追溯

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x107c49e18>
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 120, in inner_run
    self.check(display_num_errors=True)
  File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 364, in check
    include_deployment_checks=include_deployment_checks,
  File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 351, in _run_checks
    return checks.run_checks(**kwargs)
  File "/usr/local/lib/python3.6/site-packages/django/core/checks/registry.py", line 73, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 13, in check_url_config
    return check_resolver(resolver)
  File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 23, in check_resolver
    return check_method()
  File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 397, in check
    for pattern in self.url_patterns:
  File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 36, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 536, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 36, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 529, in urlconf_module
    return import_module(self.urlconf_name)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Users/freddy/PycharmProjects/DYD/DYD/urls.py", line 19, in <module>
    from dyd_server.graphql import schema
  File "/Users/freddy/PycharmProjects/DYD/dyd_server/graphql/__init__.py", line 10, in <module>
    schema = graphene.Schema(query=RootQuery, mutation=Mutations)
  File "/usr/local/lib/python3.6/site-packages/graphene/types/schema.py", line 57, in __init__
    self.build_typemap()
  File "/usr/local/lib/python3.6/site-packages/graphene/types/schema.py", line 123, in build_typemap
    schema=self
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 69, in __init__
    super(TypeMap, self).__init__(types)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/typemap.py", line 16, in __init__
    self.update(reduce(self.reducer, types, OrderedDict()))
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 77, in reducer
    return self.graphene_reducer(map, type)
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 107, in graphene_reducer
    return GraphQLTypeMap.reducer(map, internal_type)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/typemap.py", line 80, in reducer
    field_map = type.fields
  File "/usr/local/lib/python3.6/site-packages/graphql/pyutils/cached_property.py", line 16, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/definition.py", line 180, in fields
    return define_field_map(self, self._fields)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/definition.py", line 189, in define_field_map
    field_map = field_map()
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 250, in construct_fields_for_type
    map = self.reducer(map, field.type)
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 77, in reducer
    return self.graphene_reducer(map, type)
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 107, in graphene_reducer
    return GraphQLTypeMap.reducer(map, internal_type)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/typemap.py", line 80, in reducer
    field_map = type.fields
  File "/usr/local/lib/python3.6/site-packages/graphql/pyutils/cached_property.py", line 16, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/definition.py", line 180, in fields
    return define_field_map(self, self._fields)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/definition.py", line 189, in define_field_map
    field_map = field_map()
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 250, in construct_fields_for_type
    map = self.reducer(map, field.type)
  File "/usr/local/lib/python3.6/site-packages/graphene/types/typemap.py", line 78, in reducer
    return GraphQLTypeMap.reducer(map, type)
  File "/usr/local/lib/python3.6/site-packages/graphql/type/typemap.py", line 60, in reducer
    if type.name in map:
AttributeError: type object 'User' has no attribute 'name'

Answer 1

这是一个神秘的错误，当 Django 模型类被意外地用于代码而不是石墨烯类型类时会发生。例如，确保您的查询类似于

user = graphene.Field(UserType)

而不是

user = graphene.Field(User)

Answer 2

根据您的错误提示，Django 的默认 User 模型没有名为 name 的字段。

相反，它有两个相似的字段，first_name, and last_name。

如果您想使用两者的组合，请使用get_full_name() 方法。