小编The*_*tan的帖子

我最近从Django 1.6升级到Django 1.8.当我这样做时,我发现我无法再通过外键关系进行查找,如下所述:https: //docs.djangoproject.com/en/1.8/topics/db/queries/#lookups-那种跨度关系.

系统设置为有两个项目使用相同的数据库.(不是我的想法,而是我现在想要改变的东西.)最初创建和迁移模型的项目在升级后工作得很好,但另一个没有.每个模型文件都是相同的.

Models.py:

class Site(models.Model):
    name = models.CharField(max_length=255)

    class Meta:
        app_label = 'project1'

class Page(models.Model):
    title = models.CharField(max_length=255)
    site = models.ForeignKey('Site')

    class Meta:
        app_label = 'project1'

Django Shell的错误回溯:

>>> x = models.Site.objects.filter(page__id=1000)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/user_name/project2/venv/local/lib/python2.7/site-packages/django/db/models/manager.py", line 127, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/user_name/project2/venv/local/lib/python2.7/site-packages/django/db/models/query.py", line 679, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/home/user_name/project2/venv/local/lib/python2.7/site-packages/django/db/models/query.py", line 697, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/home/user_name/project2/venv/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line …