Django - 反转包装视图函数
我正在尝试将 django-schedule 合并到我的项目中。 Django-schedule 的源代码位于此处。我不喜欢这些网址，因为它们都捕获了一个 slug。我的项目只允许每个用户一个日历，因此捕获 slug 没有意义。因此，我像这样包装了 django-schedule 视图（使用当前用户查找 slug，并将其传递给 django-schedule 的视图）：
from schedule.views import calendar_by_periods
from schedule.models import Calendar
from schedule.periods import Month
def cal_by_periods_wrapper(view):
def new_view(request, *args, **kwargs):
kwargs['calendar_slug'] = Calendar.objects.get_calendars_for_object(obj=request.user, distinction="owner")[0].slug
return view(request, *args, **kwargs)
return new_view
这是 urls.py 中的相关部分：
urlpatterns = patterns('',
url(r'^$',
cal_by_periods_wrapper(calendar_by_periods),
name = "month_calendar",
kwargs={'periods': [Month], 'template_name': 'schedule/calendar_month.html'}),
这工作正常，直到它达到其中之一django-schedule 中包含的模板标签，prev_url：
@register.simple_tag
def prev_url(target, slug, period):
return '%s%s' % (
reverse(target, kwargs=dict(calendar_slug=slug)),
querystring_for_date(period.prev().start))
此函数引发：
TemplateSyntaxError at /teacher/calendar/
Caught an exception while rendering: Reverse for 'month_calendar' with arguments
'()' and keyword arguments '{'calendar_slug': u'asdf'}' not found.
如何包装此视图并仍然使反向调用工作？
I am trying to incorporate django-schedule into my project. Django-schedule's source is here. I don't like the urls, because they all capture a slug. My project will only allow one calendar per user, so it doesn't make sense to capture the slug. So, I wrapped the django-schedule views like this (look up the slug using the current user, and pass it to django-schedule's views):
from schedule.views import calendar_by_periods
from schedule.models import Calendar
from schedule.periods import Month
def cal_by_periods_wrapper(view):
def new_view(request, *args, **kwargs):
kwargs['calendar_slug'] = Calendar.objects.get_calendars_for_object(obj=request.user, distinction="owner")[0].slug
return view(request, *args, **kwargs)
return new_view
And here is the relevant section from urls.py:
urlpatterns = patterns('',
url(r'^
This works fine until it hits one of the template tags included with django-schedule, prev_url:
@register.simple_tag
def prev_url(target, slug, period):
return '%s%s' % (
reverse(target, kwargs=dict(calendar_slug=slug)),
querystring_for_date(period.prev().start))
This function raises:
TemplateSyntaxError at /teacher/calendar/
Caught an exception while rendering: Reverse for 'month_calendar' with arguments
'()' and keyword arguments '{'calendar_slug': u'asdf'}' not found.
How can I wrap this view and still make the reverse call work?
,
cal_by_periods_wrapper(calendar_by_periods),
name = "month_calendar",
kwargs={'periods': [Month], 'template_name': 'schedule/calendar_month.html'}),
This works fine until it hits one of the template tags included with django-schedule, prev_url:
This function raises:
How can I wrap this view and still make the reverse call work?
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评论（1）
这与包装函数无关。只是您不再拥有名为“month_calendar”且带有“calendar_slug”参数的 URL。要么在 urlconf 中定义一个，要么编辑 templatetag。
评论后编辑 是的，但是“反向”调用仍然传递 slug 参数，并且没有需要 1 的“month_calendar”网址，因此反向匹配失败。
This has nothing to do with wrapping the function. It's just that you no longer have a URL with the name 'month_calendar' which takes a 'calendar_slug' argument. Either define one in your urlconf, or edit the templatetag.
Edit after comment Yes but the 'reverse' call is still passing a slug argument, and there's no 'month_calendar' url which takes one, so the reverse match fails.