viur.py 文件源码

def shortKey(render, val):
    """
    Jinja2 filter: Make a shortkey from an entity-key.

    :param val: Entity-key as string.
    :type val: str

    :returns: Shortkey on success, None on error.
    :rtype: str
    """

    try:
        k = db.Key(encoded = unicode(val))
        return k.id_or_name()
    except:
        return None