Question

刚刚更新到Django 1.3并遇到了一个奇怪的错误。我从一些适用于1.2.7版本的代码中收到以下错误。

FieldError: Cannot resolve keyword 'email_config_set' into field. Choices are: id, name, site, type

奇怪的是email_config_set是ManyToMany字段的相关名称。我不确定为什么django试图把它解决到一个领域。

错误发生在django内部：

Traceback (most recent call last):
  File "./core/driver.py", line 268, in run
    self.init_norm()
  File "./driver/emailevent/background.py", line 130, in init_norm
    self.load_config()
  File "./driver/emailevent/background.py", line 71, in load_config
    events = list(config.events.select_related())
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/manager.py", line 168, in select_related
    return self.get_query_set().select_related(*args, **kwargs)
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/fields/related.py", line 497, in get_query_set
    return superclass.get_query_set(self).using(db)._next_is_sticky().filter(**(self.core_filters))
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/query.py", line 550, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/query.py", line 568, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/sql/query.py", line 1194, in add_q
    can_reuse=used_aliases, force_having=force_having)
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/sql/query.py", line 1069, in add_filter
    negate=negate, process_extras=process_extras)
  File "/usr/local/lib/python2.6/site-packages/Django-1.3.1-py2.6.egg/django/db/models/sql/query.py", line 1260, in setup_joins
    "Choices are: %s" % (name, ", ".join(names)))
FieldError: Cannot resolve keyword 'email_config_set' into field. Choices are: id, name, site, type

欢迎任何指示或提示。

Answer 1

这种情况下的问题是由于动态模型及其创建顺序。更具体地说，在填充_meta缓存时未定义一些在其他模型之后动态创建的模型，因此导致错误。清除缓存或更改创建顺序可以解决此问题。

另见https://groups.google.com/d/msg/django-users/RJlV5_ribZk/P6tv4QlJN4EJ

升级到Django 1.3后，ManyToMany上的FieldError

1 个答案: