i18n.py 文件源码

def get_default_language(language_code=None, site_id=None):
    """
    Returns default language depending on settings.LANGUAGE_CODE merged with
    best match from get_cms_setting('LANGUAGES')

    Returns: language_code
    """

    if not language_code:
        language_code = get_language_code(settings.LANGUAGE_CODE)

    languages = get_language_list(site_id)

    # first try if there is an exact language
    if language_code in languages:
        return language_code

    # otherwise split the language code if possible, so iso3
    language_code = language_code.split("-")[0]

    if not language_code in languages:
        return settings.LANGUAGE_CODE

    return language_code