Email not translated inside a Celery Task

Question

I have a celery task that sends an email asynchronously

from djcelery.common import respects_language

@task(ignore_result=True)
@respects_language
def async_send_activation_email(registration_profile):
    registration_profile.send_activation_email()

And the send activation email function

from django.core import context_processors

def send_activation_email(self):

    variables = {
                    'some_variable':'something',
        }
    context = context_processors.i18n(None) # Allows to easily get all the language information into context. None is passed as the request does not matter for this context_processor.


    # Subject
    # Email subject *must not* contain newlines
    subject = render_to_string(
        'user_manager/activation/email_subject.txt',
        variables,
        context
        )
            ...

context contains the correct informations (in my case LANGUAGE = 'fr', and other language options). Which is normal as they are correctly set by the @respects_language decorator.

but render_to_string use the fallback language anyway.

Any idea about what might be happening ?

Answer 1

Try to use

from django.utils import translation
translation.activate('fr')

EDIT

Solution from comments on the question:

check your locale paths, they might be different when they are executed in celery.