views.py 文件源码

def _preemptive_unless(base_url=None, additional_unless=None):
    if base_url is None:
        base_url = request.url_root

    disabled_for_root = not settings().getBoolean(["devel", "cache", "preemptive"]) \
                        or base_url in settings().get(["server", "preemptiveCache", "exceptions"]) \
                        or not (base_url.startswith("http://") or base_url.startswith("https://"))

    recording_disabled = request.headers.get("X-Preemptive-Record", "yes") == "no"

    if callable(additional_unless):
        return recording_disabled or disabled_for_root or additional_unless()
    else:
        return recording_disabled or disabled_for_root