"Invalid payload" error if user_id is 0

[jorisvddonk]

When trying to make a call to a restricted resource as the user with user_id 0, you get an "Invalid payload" error.

This seems to be caused by the following code in authentication.py:

        if user_id:
            user = User.objects.get(pk=user_id, is_active=True)
        else:
            msg = 'Invalid payload'
            raise exceptions.AuthenticationFailed(msg)

(if user_id evaluates to False if user_id == 0)
Not sure if this is by design or not.

[jpadilla]

@jorisvddonk definitely an edge case, was not expecting a scenario where user_id would be 0. You can submit a pull request with changes that'd fix this for you and a test case along with those changes. Maybe we should be doing if user_id is not None instead.

[jpadilla]

@jorisvddonk closing this until further updates