One view fo multiple urls to handle multiple languages in django - django

Question

I would like to use the same views for different supported languages.
For exemple I have the default language and the english.
In my main urls:
url(r'^posts/', include('posts.urls')), #for default language
url(r'^en/posts/', include('posts.urls')), #for english
The urls file of my posts app is like this:
url(r'^newpost/$', views.PostFormView.as_view(), name='add'),
url(r'^favorite/$', views.favorite, name='favorite'),
so, for example, both www.mysite.com/posts/add and www.mysite.com/en/posts/add send to the same view PostFormView and according to the url if it contains "/en/" or not I send the content in the right language.
However, the issue is with the redirect or revers sends always to the default language. For example 'posts:add' sends always to "www.mysite.com/posts/add" because I have url(r'^posts/', include('posts.urls')) before url(r'^en/posts/', include('posts.urls'))
are there any ways to use the same view for two different urls. Or, how can I handle multiple languages website? Do we have to duplicate all the apps for all the supported languages?

Answer 1

This is a long subject and it's not easy to cover everything but i'll try to cover as much as i can:
1 - Use django Internationalization and localization:
Django has a built-in function for multi language websites:
Internationalization and localization
2 - Use a single URL with different GET request:
You can add a GET request in your urls like : site.com/posts?lang=en. And try this in your views:
language = request.GET.get('lang')
and then pass the right template for this language.
example:
LANG_LIST = ['en', 'fa', 'fr']
if language.lower() in LANG_LIST:
template = '{}/posts/post.html'.format(language.lower())
else:
template = 'en/posts/post.html'
or you can use a single template with different language texts and just pass the language to the template and decide there.
Note: You should add users language to their session so you can retrieve the language even without a GET request.
Here is the docs for sessions:
How to use sessions | Django documentation | Django
Also you can add language to your users profile and retrieve the language from there. I recommend using both profile language and user sessions.
3 - Different urls (Your way):
I'm not a fan of this way of handling multi language websites really, but if you really need to do it this way then here you go:
You need different names for your urls lile posts_en, posts_fr and etc so you can redirect to the right page url.
You should get the page url in your view and check for language your using. You can do something like this: request.path.split('/').
Then you should check the language and decide which template to render just like option #2
There can be so many problems with this way of handling multiple languages so i don't think you should go with this one over the other two options.