动态路径:确保urlpatterns是路径列表

时间:2019-07-31 07:55:16

标签: django django-urls

我有很多这样的通用模式:

urlpatterns = [
    path('json/ay/<int:pk>', AyView.as_view(), name='json_ay'),
    path('json/by/<int:pk>', ByView.as_view(), name='json_by'),
    ...
]

(当然,为了清楚起见,这些类不是简单的AyBy),我正在尝试将它们转换为这样的通用函数:

first_cap_re = re.compile('(.)([A-Z][a-z]+)')
all_cap_re = re.compile('([a-z0-9])([A-Z])')
def convert(name):
    s1 = first_cap_re.sub(r'\1_\2', name)
    return all_cap_re.sub(r'\1_\2', s1).lower()


def json_view(view_class):
    view_name = '_'.join(convert(view_class.__name__).split('_')[:-1])
    return path(f'json/{view_name}/<int:pk>', view_class.as_view(),
                name=f'json_{view_name}'),

然后这样称呼它:

urlpatterns = [
    json_view(AyView),
    json_view(ByView),
    ...
]

我收到此错误:

ERRORS:
?: (urls.E004) Your URL pattern (<URLPattern 'json/ay/<int:pk>' [name='json_ay']>,) 
    is invalid. Ensure that urlpatterns is a list of path() and/or re_path() instances.
    HINT: Try using path() instead of a tuple.

我不知道为什么,知道吗?

1 个答案:

答案 0 :(得分:1)

这只是return语句末尾的逗号,导致它返回一个元组。删除逗号。

line: "{{ item.path }}"