Python 如何使用django过滤器创建自定义过滤器

救命啊！。。。我需要制作一个搜索引擎，根据前端发送的参数进行过滤并获得结果，例如，如果他们发送3个参数（存储库、系列和产品阵列），则必须遍历阵列产品，并按存储库和系列（组）获取该产品的库存

我已经用这样的查询完成了：

> for product in products["entries"]:
>                 product_id = product["id"]
>                 try:
>                     query = Stock.objects.filter(product__family=family,product__id=product_id)
>                 except Stock.DoesNotExist:
>                     query = None
>                 if query:
>                     try:
>                         query_to_return = StockSerializer(query,many=True).data

但是后来我遇到了很多问题，我找不到一种方法来分页数据，因为有很多记录，所以我想用Django过滤器来做

> class Stock(CustomModel):
> product = models.ForeignKey(Product, on_delete=models.PROTECT, related_name='stocks', verbose_name=_("Producto"))
> repository = models.ForeignKey(Repository, on_delete=models.PROTECT, related_name='stocks',
> verbose_name=_("Almacén"))
> date = models.DateTimeField(auto_now=True)

> class Product(CustomModel):
> name = models.CharField(max_length=100, unique=True, verbose_name=_("Nombre"))
> codebar = models.CharField(max_length=20, null=True, blank=True, verbose_name=_("Código de Barras"))
> brand = models.ForeignKey(Brand, null=True, blank=True, on_delete=models.PROTECT, related_name='products',
> verbose_name=_("Marca"))
>     model = models.CharField(max_length=50, verbose_name=_("Modelo"))
>     data_serie = models.CharField(max_length=50, verbose_name=_("Serie de Datos"))
....another fields..



> class Repository(CustomModel):
>     name = models.CharField(max_length=100, unique=True,verbose_name=_("Nombre"))
>     code = models.CharField(_("Clave"), max_length=20, null=True, blank=True)
>     repositories_group = models.ForeignKey(RepositoriesGroup, verbose_name=_("Grupo"), on_delete=models.PROTECT,
> related_name='repositories', null=True, blank=True)
>     description = models.TextField(_("Descripción"), null=True, blank=True)
>    .......Another Fields