index.py 文件源码

def get_hook():

    request = get_current_request()
    try:
        site = request.site
        search = queryUtility(ICatalogUtility)
    except (AttributeError, KeyError):
        return

    if not search:
        return  # no search configured

    try:
        trns = tm(request).get()
    except RequestNotFound:
        trns = transaction.get()
    hook = None
    for _hook in trns._after_commit:
        if isinstance(_hook[0], CommitHook):
            hook = _hook[0]
            break
    if hook is None:
        hook = CommitHook(site, request)
        trns.addAfterCommitHook(hook)
    return hook