我通过Wagtail的modeladmin
展示了一个模型,它在我尝试应用一个包含ForeignKey的list_filter
之前一直有效。我有一个名为Region的自引用模型(用于存储县、市和镇),我希望能够在Parent
级别上创建一个过滤器。在
我在django1.10上运行Wagtail 1.8.1。模型如下:
class Region(models.Model):
"""
Tree of regions and sub-regions.
"""
name = models.CharField(max_length=255)
parent = models.ForeignKey(
'Region',
blank=True,
null=True,
)
class Meta:
unique_together = ('name', 'parent')
def __str__(self):
return '{0}'.format(
self.name,
)
以及来自wagtail_hooks.py
的ModelAdmin
:
如果我注释掉类RegionAdmin
中的list_filter
行,效果很好。文档说它可以在列表中使用ForeignKey
。我错过了什么明显的东西吗?堆栈跟踪在这里:
Traceback (most recent call last):
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/core/handlers/exception.py", line 39, in inner
response = get_response(request)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/views/decorators/cache.py", line 43, in _cache_controlled
response = viewfunc(request, *args, **kw)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/wagtail/wagtailadmin/decorators.py", line 24, in decorated_view
return view_func(request, *args, **kwargs)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/wagtail/contrib/modeladmin/options.py", line 350, in index_view
return view_class.as_view(**kwargs)(request)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/utils/decorators.py", line 67, in _wrapper
return bound_func(*args, **kwargs)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/contrib/auth/decorators.py", line 23, in _wrapped_view
return view_func(request, *args, **kwargs)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/utils/decorators.py", line 63, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/wagtail/contrib/modeladmin/views.py", line 249, in dispatch
self.queryset = self.get_queryset(request)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/wagtail/contrib/modeladmin/views.py", line 554, in get_queryset
filters_use_distinct) = self.get_filters(request)
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/wagtail/contrib/modeladmin/views.py", line 381, in get_filters
field_path)[-1]
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/contrib/admin/utils.py", line 485, in get_fields_from_path
fields.append(parent._meta.get_field(piece))
File "/home/vagrant/.virtualenvs/sepia/lib/python3.5/site-packages/django/db/models/options.py", line 619, in get_field
raise FieldDoesNotExist('%s has no field named %r' % (self.object_name, field_name))
django.core.exceptions.FieldDoesNotExist: Region has no field named 'p'
谢谢你的帮助和建议!在
你缺少一个逗号:
如果没有逗号,则忽略括号,django将迭代字符串,而不是元组(因为没有元组!){cd1>试图访问^字段。在
从docs:
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