问题
I'm using django modeltranslation for a multi-language site.
Language fallback works good when reading attributes directly. For example, if current language is German and I print object.title, if the German title is not defined I'll see the english title.
I would expect fallback to work also on queries, but that's not true. In fact, if i do something like
results = MyModel.objects.filter(title = 'hello')
this will get no results if the German title is not set, while I would like it to return the object with english title "hello".
How can I make this work?
Thanks in advance.
回答1:
The thing to do here is to explicitly query the desire language. In your case:
from django.db.models import Q
# ...
# define your query like this:
results = MyModel.objects.filter(Q(title_de = 'hello') | Q(title_en = 'hello'))
# supposing you have German and English languages set
Why this work? Because when you query the specific language, ModelTranslation keep it. Otherwise it use the current language.
I hope it helps!
回答2:
You must ensure that your model is registered in translation.py
from modeltranslation.translator import register, TranslationOptions
@register(YourModel)
class YourModel(TranslationOptions):
pass
In this way all the queries that are done will return the appropriate field depending on the language in which it is, this because to register it is created a MultilingualManager
来源：https://stackoverflow.com/questions/27418377/django-modeltranslation-queries-fallback