使用Django auth用户模型作为外键并反向关系

Question

我正在使用该User模型 django.contrib.auth.models.我有另一个模型Post,User通过外键引用.

问题是当我尝试访问登录用户的帖子时

request.user.post_set.order_by('-timestamp')

我收到错误,User对象没有属性post_set.那么如何使用带外键的默认身份验证模型？

Answer 1

您是否在settings.py安装的应用程序中包含了包含Post模型的应用程序？

例如

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'testapp'
    # Uncomment the next line to enable the admin:
    # 'django.contrib.admin',
    # Uncomment the next line to enable admin documentation:
    # 'django.contrib.admindocs',
)

并运行manage.py syncdb？

python manage.py syncdb

即,Post模型的数据库表肯定存在吗？

我做了一个快速测试,发现没有问题:

from django.db import models
from django.contrib.auth.models import User

class PostModel(models.Model):
    user = models.ForeignKey(User)

(test) C:\Users\Steven\django_projects\test\testproj>python manage.py shell
Python 2.7.1 (r271:86832, Nov 27 2010, 18:30:46) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from django.contrib.auth.models import User
>>> test = User.objects.get(username='test')
>>> test.postmodel_set.all()
[]

Answer 2

Post.objects.filter(user=request.user).order_by('-timestamp')