Method fetch

django/db/models/fetch_modes.py:31–40

(self, fetcher, instance)

    track_peers = True

    def fetch(self, fetcher, instance):
        instances = [
            peer
            for peer_weakref in instance._state.peers
            if (peer := peer_weakref()) is not None
        ]
        if len(instances) > 1:
            fetcher.fetch_many(instances)
        else:
            fetcher.fetch_one(instance)

    def __reduce__(self):
        return "FETCH_PEERS"