Celery 3.1 now supports Django out of the box, please see the new tutorial

Frequently Asked Questions

Generating a template in a task doesn’t seem to respect my i18n settings?

Answer: To enable the Django translation machinery you need to activate it with a language. Note: Be sure to reset to the previous language when done.

>>> from django.utils import translation

>>> prev_language = translation.get_language()
>>> translation.activate(language)
>>> try:
...     render_template()
... finally:
        translation.activate(prev_language)

The common pattern here would be for the task to take a language argument:

from celery.decorators import task

from django.utils import translation
from django.template.loader import render_to_string

@task()
def generate_report(template="report.html", language=None):
    prev_language = translation.get_language()
    language and translation.activate(language)
    try:
        report = render_to_string(template)
    finally:
        translation.activate(prev_language)
    save_report_somewhere(report)

The celery test-suite is failing

Answer: If you’re running tests from your Django project, and the celery test suite is failing in that context, then follow the steps below. If the celery tests are failing in another context, please report an issue to our issue tracker at GitHub:

That Django is running tests for all applications in INSTALLED_APPS by default is a pet peeve for many. You should use a test runner that either

  1. Explicitly lists the apps you want to run tests for, or
  2. Make a test runner that skips tests for apps you don’t want to run.

For example the test runner that celery is using:

To use this test runner, add the following to your settings.py:

TEST_RUNNER = "djcelery.tests.runners.CeleryTestSuiteRunner",
TEST_APPS = (
    "app1",
    "app2",
    "app3",
    "app4",
)

Or, if you just want to skip the celery tests:

INSTALLED_APPS = (.....)
TEST_RUNNER = "djcelery.tests.runners.CeleryTestSuiteRunner",
TEST_APPS = filter(lambda k: k != "celery", INSTALLED_APPS)