Python Django RESTful API错误“;键入对象';用户';没有属性'_meta&x27&引用;
我正在尝试用django rest框架和cassandra构建RESTful API,在一步一步地学习官方的django rest框架教程之后,我遇到了这个错误Python Django RESTful API错误“;键入对象';用户';没有属性'_meta&x27&引用;,python,django,rest,django-rest-framework,cqlengine,Python,Django,Rest,Django Rest Framework,Cqlengine,我正在尝试用django rest框架和cassandra构建RESTful API,在一步一步地学习官方的django rest框架教程之后,我遇到了这个错误 Traceback: File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 132. response = wrapped_callback(request, *callback_args, **callba
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
132. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/csrf.py" in wrapped_view
58. return view_func(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in view
71. return self.dispatch(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/rest_framework/views.py" in dispatch
456. response = self.handle_exception(exc)
File "/usr/local/lib/python2.7/dist-packages/rest_framework/views.py" in dispatch
444. self.initial(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/rest_framework/views.py" in initial
359. self.check_permissions(request)
File "/usr/local/lib/python2.7/dist-packages/rest_framework/views.py" in check_permissions
304. if not permission.has_permission(request, self):
File "/usr/local/lib/python2.7/dist-packages/rest_framework/permissions.py" in has_permission
125. perms = self.get_required_permissions(request.method, queryset.model)
File "/usr/local/lib/python2.7/dist-packages/rest_framework/permissions.py" in get_required_permissions
104. 'app_label': model_cls._meta.app_label,
Exception Type: AttributeError at /users/
Exception Value: type object 'User' has no attribute '_meta'
这是我的密码
url.py
from django.conf.urls import url
from rest_framework.urlpatterns import format_suffix_patterns
from tutorial import views
urlpatterns = [
# Examples:
url(r'^users/$', views.UsersList.as_view()),
url(r'^users/(?P<pk>[0-9]+)/$', views.UserDetail.as_view()),
]
urlpatterns = format_suffix_patterns(urlpatterns)
import uuid
from cassandra.cqlengine import columns
from cassandra.cqlengine.models import Model
# Create your models here.
class User(Model):
id = columns.UUID(primary_key=True, default=uuid.uuid4)
username = columns.Text(max_length=30, required=True)
password = columns.Text(max_length=55, required=True)
gender = columns.UUID(default=0)
languages = columns.List(value_type=columns.UUID)
friends = columns.Set(value_type=columns.UUID)
from rest_framework import serializers
from tutorial.models import User
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('username', 'position', 'gender', 'status', 'language')
from tutorial.models import User
from tutorial.serializers import UserSerializer
from rest_framework import generics
class UsersList(generics.ListCreateAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
class UserDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
序列化程序.py
from django.conf.urls import url
from rest_framework.urlpatterns import format_suffix_patterns
from tutorial import views
urlpatterns = [
# Examples:
url(r'^users/$', views.UsersList.as_view()),
url(r'^users/(?P<pk>[0-9]+)/$', views.UserDetail.as_view()),
]
urlpatterns = format_suffix_patterns(urlpatterns)
import uuid
from cassandra.cqlengine import columns
from cassandra.cqlengine.models import Model
# Create your models here.
class User(Model):
id = columns.UUID(primary_key=True, default=uuid.uuid4)
username = columns.Text(max_length=30, required=True)
password = columns.Text(max_length=55, required=True)
gender = columns.UUID(default=0)
languages = columns.List(value_type=columns.UUID)
friends = columns.Set(value_type=columns.UUID)
from rest_framework import serializers
from tutorial.models import User
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('username', 'position', 'gender', 'status', 'language')
from tutorial.models import User
from tutorial.serializers import UserSerializer
from rest_framework import generics
class UsersList(generics.ListCreateAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
class UserDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
视图.py
from django.conf.urls import url
from rest_framework.urlpatterns import format_suffix_patterns
from tutorial import views
urlpatterns = [
# Examples:
url(r'^users/$', views.UsersList.as_view()),
url(r'^users/(?P<pk>[0-9]+)/$', views.UserDetail.as_view()),
]
urlpatterns = format_suffix_patterns(urlpatterns)
import uuid
from cassandra.cqlengine import columns
from cassandra.cqlengine.models import Model
# Create your models here.
class User(Model):
id = columns.UUID(primary_key=True, default=uuid.uuid4)
username = columns.Text(max_length=30, required=True)
password = columns.Text(max_length=55, required=True)
gender = columns.UUID(default=0)
languages = columns.List(value_type=columns.UUID)
friends = columns.Set(value_type=columns.UUID)
from rest_framework import serializers
from tutorial.models import User
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('username', 'position', 'gender', 'status', 'language')
from tutorial.models import User
from tutorial.serializers import UserSerializer
from rest_framework import generics
class UsersList(generics.ListCreateAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
class UserDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
提前感谢您的支持。据我所知,cassandra的模型没有实现元类,这是使用rest\u framework等应用程序所必需的。您需要实现与django兼容的模型才能使用rest\u框架 如django cassandra engine的一位开发者所述: cqlengine很快将被合并到python驱动程序中。在此之后,我们可以考虑一下,但重要的是要知道,django cassandra引擎并不意味着与django车型完全兼容 Github问题参考此项目
它使用Serializer.Serializer而不是Serializer.ModelSerializer您将无法在视图中使用或使用任何依赖于Django模型的权限类,因为您使用的模型不兼容。