fix bug with descendant

from django.db.models.query import RawQuerySet

from django.utils.text import slugify

from django.db import models, connection

from django.contrib.auth.models import User

    def children(self):

        return Collection.objects.filter(parent=self, deleted_at__isnull=True)

    def descendants(self) -> Union[RawQuerySet, Iterator["Collection"]]:

        if settings.JAMA_SQLITE_DB_PATH:

    def descendants(self) -> Iterator["Collection"]:

        yield from _recurse_collection(self)

        else:

            return Collection.objects.raw(

                "select * from resources_collection where id = any(get_all_collection_descendants_array(%s)) and deleted_at is null",

                [self.id],

            )

    def descendants_resources(self) -> Union[RawQuerySet, Iterator[Resource]]:

        if settings.JAMA_SQLITE_DB_PATH:

    def descendants_resources(self) -> Iterator[Resource]:

        for res in self.resources.filter(deleted_at__isnull=True):

            yield res

        for col in _recurse_collection(self):

            for res in col.resources.filter(deleted_at__isnull=True):

                yield res

        else:

            sql = """

            select * from resources_resource

                inner join resources_collectionmembership rc

                on resources_resource.id = rc.resource_id

                inner join resources_collection c on rc.collection_id = c.id

            where rc.collection_id = any(get_all_collection_descendants_array(%s))

            and c.deleted_at is null

            and resources_resource.deleted_at is null order by resources_resource.title;

            """

            return Resource.objects.raw(sql, [self.id])

    def descendants_and_self_ids(self) -> List[int]:

        ids = [self.pk]

            .prefetch_related("metadataresourcevalue_set")

        ):

            yield _flatten_resource(res, known_metadatas, known_metadatas_labels)

        for res in self.descendants_resources().prefetch_related(

            "metadataresourcevalue_set"

        ):

        for res in self.descendants_resources():

            yield _flatten_resource(res, known_metadatas, known_metadatas_labels)