home
join about login
Django tips and tricks

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?

3643 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!

Eclipse solar hoje! - Guri de Uruguaiana fala sobre hits do Carnaval e exageros no Phot - Dieguito - A Lesma © ℗ MÚSICA AUTORAL Ensaio - NASA Awards Contract for Continued Operations of its Jet Propulsi - Los candidatos se disputan el poderoso voto del magisterio mexica - Pipi das Meias Altas Portuguese vol 1 - Cetus Galaxies and Supernova - Little Planet Soyuz - Climate change: 'Hothouse Earth' risks even if CO2 emissions slas - Slava Ukraini! on Steam - amizades - Noel Guarany | Sem Fronteira (1975) [Álbum Completo/Full Album] - Fallece un exdiputado federal del PRI tiroteado este fin de seman - Orion in Red and Blue - Newest Crew Launches for the International Space Station - Launching to Observe Our Sun - Eu vi eu viiiii O papai noel tava na sinaleira - Major League Baseball notebook: Mariners deal for Colome, Span fr - Hello. - GLORIA GROOVE - SEDANAPO - Southern California as Seen From Apollo 7 - Trump quip about North Korea's Kim sparks outcry on social media - This is how to train a cat :D How I Trained My Cat - Celebrating 28 Years of the Hubble Space Telescope - The Extraordinary Spiral in LL Pegasi - Federer pummels Bemelmans to move closer to top spot - Tonella - revisão do limpador de parabrisa do fusca - NASA Awards Contract for Aerospace Systems Modeling, Simulation - At Tranquility Base - Exclusive: North Korea earned $200 million from banned exports, s - Austria plans tougher sentences for crimes against women - Wozniacki passes Barty test in Madrid, Sharapova advances -  

tutti - social network

Tutti is the simplest social network on internet. Here you can make friends, create communities, sell things, make surveys, comment and share stuff.

La federación británica ha suspendido este lunes al excampeón de boxeo Billy Joe Saunders, después de publicar un video donde sale explicando cómo pegarle a su mujer durante la cuarentena.
more