django-taggit在使用UUID时不工作

from django.db import models
from django.contrib.postgres.fields import ArrayField
import uuid
from taggit.managers import TaggableManager

class MyModel(models.Model):
    uuid = models.UUIDField(default=uuid.uuid4, editable=False)
    tags = TaggableManager()

from taggit.managers import TaggableManager
import uuid

class UUIDTaggableManager(TaggableManager):
    def create_tag(self, name):
        slug, name = self.tag_model().tagify(name)
        return self.tag_model().objects.get_or_create(slug=slug, defaults={'name': name, 'uuid': uuid.uuid4()})

from django.db import models
from myapp.fields import UUIDTaggableManager

class MyModel(models.Model):
    tags = UUIDTaggableManager()