Question

当我尝试在Django Admin中删除记录时，对于某些记录，我得到

'bool'对象不可调用

我无法确定错误是基于此追溯的。

Traceback:

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  35.             response = get_response(request)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/options.py" in wrapper
  575.                 return self.admin_site.admin_view(view)(*args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view
  142.                     response = view_func(request, *args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  44.         response = view_func(request, *args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/sites.py" in inner
  223.             return view(request, *args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapper
  62.             return bound_func(*args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view
  142.                     response = view_func(request, *args, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/utils/decorators.py" in bound_func
  58.                 return func.__get__(self, type(self))(*args2, **kwargs2)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/options.py" in delete_view
  1736.             return self._delete_view(request, object_id, extra_context)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/options.py" in _delete_view
  1760.             [obj], opts, request.user, self.admin_site, using)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/utils.py" in get_deleted_objects
  131.     collector.collect(objs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/contrib/admin/utils.py" in collect
  195.             return super().collect(objs, source_attr=source_attr, **kwargs)

File "/home/henry/Documents/Sites/Development/django-authenticjobs/env/lib/python3.6/site-packages/django/db/models/deletion.py" in collect
  222.                         field.remote_field.on_delete(self, field, sub_objs, self.using)

Exception Type: TypeError at /admin/jobboard/job/155/delete/
Exception Value: 'bool' object is not callable

谁能建议在哪里看？谢谢

Answer 1

您已将on_delete中的ForeignKey或OneToOneField设置为布尔值（True或False）。像这样：

class SomeModel(models.Model):
    some_fk = models.ForeignKey(OtherModel, on_delete=False)

您不能将此设置为布尔值。您可以将其设置为documentation中列出的值：CASCADE，PROTECT，SET_NULL，SET_DEFAULT，SET(..)或{{1 }}。

严格来说，您也可以实施自己的策略，因为上面列出的实际上只是功能。例如CASCADE is implemented like [GitHub]：

DO_NOTHING

尽管您可能不需要实现自己的实现，但可以选择文档中列出的一种。例如：

def CASCADE(collector, field, sub_objs, using):
    collector.collect(sub_objs, source=field.remote_field.model,
                      source_attr=field.name, nullable=field.null)
    if field.null and not connections[using].features.can_defer_constraint_checks:
        collector.add_field_update(field, None, sub_objs)

Django Admin-'bool'对象不可调用

1 个答案: