utils.py 文件源码

def get_user_by_email(email):
    """Retrieves auser by its email address.

    First it looks up the `EmailAddress` entries, and as a safety measure
    falls back to looking up the `User` entries (these addresses are
    sync'ed in theory).

    :param email: address of the user to look up.
    :return: `User` instance belonging to `email`, `None` otherwise.
    """
    try:
        return EmailAddress.objects.get(email__iexact=email).user
    except EmailAddress.DoesNotExist:
        try:
            User = get_user_model()
            return User.objects.get(email__iexact=email)
        except User.DoesNotExist:
            return None