Method disconnect

django/dispatch/dispatcher.py:179–213

Disconnect receiver from sender for signal. If weak references are used, disconnect need not be called. The receiver will be removed from dispatch automatically. Arguments: receiver The registered receiver to disconnect. May be none if

(self, receiver=None, sender=None, dispatch_uid=None)

            self.sender_receivers_cache.clear()

    def disconnect(self, receiver=None, sender=None, dispatch_uid=None):
        """
        Disconnect receiver from sender for signal.

        If weak references are used, disconnect need not be called. The
        receiver will be removed from dispatch automatically.

        Arguments:

            receiver
                The registered receiver to disconnect. May be none if
                dispatch_uid is specified.

            sender
                The registered sender to disconnect

            dispatch_uid
                the unique identifier of the receiver to disconnect
        """
        if dispatch_uid:
            lookup_key = (dispatch_uid, _make_id(sender))
        else:
            lookup_key = (_make_id(receiver), _make_id(sender))

        disconnected = False
        with self.lock:
            self._clear_dead_receivers()
            for index in range(len(self.receivers)):
                r_key, *_ = self.receivers[index]
                if r_key == lookup_key:
                    disconnected = True
                    del self.receivers[index]
                    break
            self.sender_receivers_cache.clear()
        return disconnected

    def has_listeners(self, sender=None):
        sync_receivers, async_receivers = self._live_receivers(sender)