Django：'QuerySet'对象没有属性'serialize'

Question

models.py

class UpdateQuerySet(models.QuerySet):
    def serialize(self):
        qs = self
        return serialize('json', qs, fields=('user', 'content', 'image'))

class UpdateManager(models.Manager):
    def get_queryset(self):
        return UpdateQuerySet(self.model, using=self._db)
class Tools_booked(models.Model):
    auto_increment_id = models.AutoField(primary_key=True)
    user=models.ForeignKey(Profile, on_delete=models.CASCADE)
    component = models.CharField(max_length=30, blank=True)
    booked = models.DateTimeField(auto_now_add=True,blank=True)

    objects = UpdateManager()

    def __str__(self):
        return self.component

    def serialize(self):
        return serialize("json", [self], fields=['auto_increment_id','user','component','booked'])

在views.py中>

from django.core.serializers import serialize
class SerializedDetialView(View):
     def get(self, request, *args, **kwargs):
        obj = Tools_booked.objects.get(auto_increment_id=1)
        json_data = obj.serialize()
        return HttpResponse(json_data, content_type='application/json')


class SerializedListView(View):
     def get(self, request, *args, **kwargs):
        qs = Tools_booked.objects.all()
        json_data = qs.serialize()
        return HttpResponse(json_data, content_type='application/json')
我已经看到了类似的问题，可以通过新的类视图解决。但是为什么这段代码不起作用。它为SerializedListView和SerializedDetialView url显示的错误是

'QuerySet' object has no attribute 'serialize'
和

'Tools_booked' object has no attribute 'serialize'
为什么存在此错误，以及如何在不创建新类的情况下解决此错误。

edit

in views.py, line 84, in get
    json_data = qs.serialize()
    AttributeError: 'QuerySet' object has no attribute 'serialize'

models.py类UpdateQuerySet（models.QuerySet）：def serialize（self）：qs = self return serialize（'json'，qs，fields =（'user'，'content'，'image'））类UpdateManager（型号....

Answer 1

https://docs.djangoproject.com/en/3.0/topics/serialization/#serializing-data