我正在尝试运行最小的Django服务器，但在向/ api / v1 /端点发送获取请求时收到此错误。
我知道之前也曾问过类似的问题，并且我相信这是由于导入参考无效而引起的，但是我看不到我在哪里犯了错误。
文件系统（减去缓存+迁移文件夹）：
.
├── api
│ ├── admin.py
│ ├── apps.py
│ ├── __init__.py
│ ├── models.py
│ ├── serializers.py
│ ├── tests.py
│ ├── urls.py
│ └── views.py
├── blog_project
│ ├── __init__.py
│ ├── settings.py
│ ├── urls.py
│ └── wsgi.py
├── db.sqlite3
├── manage.py
├── Pipfile
├── Pipfile.lock
└── posts
├── admin.py
├── apps.py
├── __init__.py
├── models.py
├── tests.py
└── views.py
api / views.py
from django.shortcuts import render
# Create your views here.
from rest_framework import generics
from posts import models
from .serializers import PostSerializer
class PostList(generics.ListCreateAPIView):
queryset = models.Post.objects.all()
serializer_class = PostSerializer
class PostDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = models.Post.objects.all()
serializer_class = PostSerializer
api / serializers.py
from rest_framework import serializers
from posts import models
class PostSerializer(serializers.ModelSerializer):
class Meta:
fields = ('id', 'author', 'title', 'body', 'created_at',)
model = models.Post
api / urls.py
from django.urls import path
from .views import PostList, PostDetail
urlpatterns = [
path('<int:pk>/', PostDetail.as_view()),
path('', PostList.as_view()),
]
posts / models.py
from django.db import models
# Create your models here.
from django.db import models
from django.contrib.auth.models import User
class Post(models.Model):
author = models.ForeignKey(User, on_delete = models.CASCADE)
title = models.CharField(max_length = 50)
body = models.TextField()
created_at = models.DateTimeField(auto_now_add = True)
updated_at = models.DateTimeField(auto_now = True)
def __str__(self):
return self.title
完整追溯：
Traceback (most recent call last):
File "/home/dario/anaconda3/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/dario/anaconda3/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/dario/anaconda3/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/dario/anaconda3/lib/python3.7/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "/home/dario/anaconda3/lib/python3.7/site-packages/django/views/generic/base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 505, in dispatch
response = self.handle_exception(exc)
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 465, in handle_exception
self.raise_uncaught_exception(exc)
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
raise exc
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 493, in dispatch
self.initial(request, *args, **kwargs)
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 411, in initial
self.check_permissions(request)
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 331, in check_permissions
for permission in self.get_permissions():
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 278, in get_permissions
return [permission() for permission in self.permission_classes]
File "/home/dario/anaconda3/lib/python3.7/site-packages/rest_framework/views.py", line 278, in <listcomp>
return [permission() for permission in self.permission_classes]
TypeError: 'str' object is not callable