Method prefetch_related

ormar/queryset/queryset.py:426–451

Allows to prefetch related models during query - but opposite to `select_related` each subsequent model is fetched in a separate database query. **With `prefetch_related` always one query per Model is run against the database**, meaning that you will have multiple q

(
        self, related: Union[list, str, FieldAccessor]
    )

        return self.rebuild_self(select_related=relations)

    def prefetch_related(
        self, related: Union[list, str, FieldAccessor]
    ) -> "QuerySet[T]":
        """
        Allows to prefetch related models during query - but opposite to
        `select_related` each subsequent model is fetched in a separate database query.

        **With `prefetch_related` always one query per Model is run against the
        database**, meaning that you will have multiple queries executed one
        after another.

        To fetch related model use `ForeignKey` names.

        To chain related `Models` relation use double underscores between names.

        :param related: list of relation field names, can be linked by '__' to nest
        :type related: Union[list, str]
        :return: QuerySet
        :rtype: QuerySet
        """
        if not isinstance(related, list):
            related = [related]
        related = cast(list, extract_access_chains(related))

        related = list(set(list(self._prefetch_related) + related))
        return self.rebuild_self(prefetch_related=related)

    def flatten_fields(
        self,