> > > To achieve this, you can create a custom middleware that inherits from > `LocaleMiddleware`. In your custom middleware, you can override the > `process_request` method to check for the tenant's allowed languages and > set the request's language accordingly. > > 1. Create a new model field for the Tenant model that stores the allowed > languages as a list. This can be a JSON field or a ManyToMany field linked > to a Language model. > > # models.py > from django.contrib.postgres.fields import ArrayField > from django.db import models > > class Tenant(models.Model): > ... > allowed_languages = ArrayField(models.CharField(max_length=10)) > > > 2. Create a custom middleware that inherits from > `django.middleware.locale.LocaleMiddleware`: > # custom_middleware.py > from django.middleware.locale import LocaleMiddleware > from django.utils import translation > > class CustomLocaleMiddleware(LocaleMiddleware): > def process_request(self, request): > # Get the current tenant > current_tenant = request.tenant > > # Get the user's preferred language from the request > language = translation.get_language_from_request(request, > check_path=True) > > # Check if the preferred language is in the tenant's > allowed_languages list > if language not in current_tenant.allowed_languages: > # If not, set the default language for the tenant > language = current_tenant.default_language > > # Activate the chosen language > translation.activate(language) > request.LANGUAGE_CODE = translation.get_language() > 3. Replace `LocaleMiddleware` with your custom middleware in your > `MIDDLEWARE` settings: > > # settings.py > MIDDLEWARE = [ > ... > # 'django.middleware.locale.LocaleMiddleware', > 'your_app.custom_middleware.CustomLocaleMiddleware'. > Now, when a user requests a page, the custom middleware checks if the > requested language is in the tenant's `allowed_languages` list. If it is > not, the tenant's default language will be used. This ensures that the UI > and the data are shown in a consistent language. >
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