def page_tags_by_id(context, oid):
    obj = get_page_object_by_id(context, 'tags', oid)
    return obj if obj else None
def page_video_by_id(context, oid):
    obj = get_page_object_by_id(context, 'video', oid)
    return obj if obj else None
def page_file_by_id(context, oid):
    obj = get_page_object_by_id(context, 'file', oid)
    return obj if obj else None
def page_video_by_id(context, oid):
    obj = get_page_object_by_id(context, 'video', oid)
    if obj is None:
        return None
    return obj