我正在使用Django 1.10开发一个简单的rest api 当我运行我的服务器并调用应用程序URL时,我收到一个错误:
TypeError:
__init__()
需要1个位置参数,但是给出了2个
GET / demo / HTTP / 1.1“500 64736
Environment:
Request Method: GET
Request URL: http://localhost:8000/demo/
Django Version: 1.10.4
Python Version: 3.5.2
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'mydemoapp',
'rest_framework']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/home/aqib/DjangoProject/mydemoenv/lib/python3.5/site- packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/home/aqib/DjangoProject/mydemoenv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/home/aqib/DjangoProject/mydemoenv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
Exception Type: TypeError at /demo/
Exception Value: __init__() takes 1 positional argument but 2 were given
from django.db import models
class ProfileModel(models.Model):
name = models.CharField(max_length=30, blank=False, default='Your Name')
address = models.CharField(max_length=100, blank=True)
contact = models.IntegerField()
def __str__(self):
return '%s %s' % (self.name, self.address)
from django.shortcuts import render
from rest_framework import viewsets
from mydemoapp.models import ProfileModel
from .serializers import ProfileSerializer
class ProfileView(viewsets.ModelViewSet):
profile = ProfileModel.objects.all()
serializer_class = ProfileSerializer
from .models import ProfileModel
from rest_framework import serializers
class ProfileSerializer(serializers.ModelSerializer):
class Meta:
model = ProfileModel
fields = ('name', 'address', 'contact')
from django.conf.urls import url
from mydemoapp import views
urlpatterns = [
url(r'^$', views.ProfileView),
]
from django.conf.urls import url, include
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^demo/', include('mydemoapp.urls')),
]
答案 0 :(得分:3)
您使用的ViewSet
网址错误。这是正确的方式
# project/urls.py
from django.conf.urls import url, include
from django.contrib import admin
from rest_framework import routers
from mydemoapp import views
router = routers.DefaultRouter()
router.register(r'demo', views.ProfileView)
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^', include(router.urls)),
]
了解更多http://www.django-rest-framework.org/api-guide/routers/
回答评论
现在我得到了AssertionError:未指定base_name参数,并且无法自动确定视图集中的名称,因为它没有.queryset属性。
您的观点也不正确。它应该是queryset
而不是profile
class ProfileView(viewsets.ModelViewSet):
queryset = ProfileModel.objects.all() # <-- here
serializer_class = ProfileSerializer
答案 1 :(得分:2)
我经常犯这种非常愚蠢的错误。这是由于urls.py(Application)。
永远记得调用 {
"presets": [
"react-app"
],
"plugins": [
"external-helpers"
]
}
方法
错误
urls.py
.as_view()
正确
urls.py
from django.conf.urls import url
from mydemoapp import views
urlpatterns = [
url(r'^$', views.ProfileView),
]