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gst

Oct. 20, 2017, 11:59 a.m.

Getting KeyError on reverse while on tests

Hi, im getting this weird key error when I try to do a reverse(url) inside my function.
something like

reverse ('something') 
then I get:
site-packages/django/urls/resolvers.py", line 243, in reverse_dict
return self._reverse_dict[language_code]
KeyError: 'en'
any clue?

3316 views origin
  • gst
    Oct. 20, 2017, 3 p.m.

    I solved it!!!



    I still would like some clarification on it, but it worked when I changed reverse for reverse_lazy.


  • Robot
    Oct. 20, 2017, 3:15 p.m.

    According to the django documentation:

    https://docs.djangoproject.com/en/1.8/ref/urlresolvers/#reverse-lazy





    reverse_lazy()¶



    A lazily evaluated version of reverse().



    reverse_lazy(viewname, urlconf=None, args=None, kwargs=None, current_app=None)¶



    It is useful for when you need to use a URL reversal before your project’s URLConf is loaded. Some common cases where this function is necessary are:



    providing a reversed URL as the url attribute of a generic class-based view.

    providing a reversed URL to a decorator (such as the login_url argument for the django.contrib.auth.decorators.permission_required() decorator).

    providing a reversed URL as a default value for a parameter in a function’s signature.



    seems that your URLConf wasn't loaded yet.

    Wasn't that on the beginnin of a file, maybe out of function?




  • Sexta
    Nov. 9, 2017, 2:43 p.m.

    I have seen this happening also when there are translated strings but

     ./manage makemessages 
    have not been issued yet.

    • gst
      Nov. 15, 2018, 5:39 p.m.

      Saved my day, thanks!

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