i18n.py 文件源码

def _get_translations():
    """Returns the correct gettext translations.
    Copy from flask-babel with some modifications.
    """
    ctx = _request_ctx_stack.top
    if ctx is None:
        return None
    # babel should be in extensions for get_locale
    if 'babel' not in ctx.app.extensions:
        return None
    translations = getattr(ctx, 'wtforms_translations', None)
    if translations is None:
        dirname = messages_path()
        translations = support.Translations.load(
            dirname, [get_locale()], domain='wtforms'
        )
        ctx.wtforms_translations = translations
    return translations