Hello all,
It seems that gettext is currently quite permissive – it falls back to the
default language whenever a translation file is missing or if the requested
message ID is missing from the translation file. This can lead to errors
slipping through easily.
Consider this example from the documentation:
from django.http import HttpResponse
from django.utils.translation import gettext as _
def my_view(request):
output = _("Welcome to my site.")
return HttpResponse(output)
Let's also assume there's two languages used in the application: LANGUAGES
= [('en', 'English'), ('de', 'German')])
Note that even if you display the view with the German language, you will
see "Welcome to my site." and will not receive any error or warning about
the fact that the German translation file doesn't even exist yet.
Then create a translation catalog file and translate the sentence. Notice
that the translated sentence appears now properly. Now change the output
line to output = _("Welcome to my updated site."). Notice how the
translated sentence turns back into English even when using German as a
language and you don't get any warning or error again.
I think it would be great if there was a way to make gettext raise an error
when the translation file is missing or when the msgid is missing. In order
to add this feature in a backwards-compatible manner we could consider
controlling this behavior through a new settings option. Alternatively, a
warning could be also emitted, I could convert those into errors at least
during testing. Silently falling back to a different language upon changes
is just not great, I think.
Thanks,
Gergely
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