如果同一个模型有多个序列化程序，并且它们之间的数据不同，那么这是非常好的。
如果您担心在不同的序列化程序上多次重写相同的代码，您可以为Products模型创建一个基本序列化程序，然后根据需要扩展它。
就像这样：

# Make a BaseProductSerializer that inherits from Modelserializer and contains all fields and methods that all Products serializers need.
class BaseProductSerializer(Modelserializer):
    product_offer_discount = SerializerMethodField()
    category_offer_discount = SerializerMethodField()
    highest_offer_price = SerializerMethodField()

    def get_product_offer_discount(self):
        return # whatever this method should do...

    def get_category_offer_discount(self):
        return # whatever this method should do...

    def get_highest_offer_price(self):
        return # whatever this method should do...

# Make a serializer for related products that inherits from BaseProductSerializer and specify the Meta data.
class RelatedProductSerializer(BaseProductSerializer):
    class Meta:
        model = Products
        fields = [
            'product_name',
            'slug',
            'base_price',
            'images',
            'highest_offer_price',
            'product_offer_discount',
            'category_offer_discount'
        ]

# Make a serializer for product details that inherits from BaseProductSerializer and add any extra fields/methods that you need.
class ProductDetailserializer(BaseProductSerializer):
    description = ProductDescription()
    extra_images = SerializerMethodField()
    related_products = SerializerMethodField()

    class Meta:
        model = Products
        fields = [
            "id",
            "product_name",
            "slug",
            "highest_offer_price",
            "category_offer_discount",
            "product_offer_discount",
            "description",
            "base_price",
            "stock",
            "is_available",
            "images",
            "extra_images",
            "related_products"
        ]

    def to_representation(self, instance):
        print('INSTANCE', instance)
        rep = super().to_representation(instance)
        rep['description'] = ProductDescriptionSerializer(instance.description, many=True).data
        return rep

    def get_related_products(self, obj):
        products= Products.objects.filter(category=obj.category).exclude(id=obj.id)
        return RelatedProductSerializer(products, many=True, context=self.context).data

    def get_extra_images(self, obj):
        images = obj.extra_images.all()
        return ProductImageSerializer(images, many=True, context=self.context).data

希望这对你有帮助。