如何使用PostgreSQL DB在Django Rest框架中关联两个无外键的Django模型

from django.db import models

class ModelA(models.Model):
    name = models.CharField(max_length=100)
    # 其他字段...

class ModelB(models.Model):
    name = models.CharField(max_length=100)
    # 其他字段...

from django.contrib.postgres.fields import ArrayField

class ModelA(models.Model):
    name = models.CharField(max_length=100)
    model_b_ids = ArrayField(models.IntegerField(), blank=True, default=list)
    # 其他字段...

from rest_framework import serializers
from .models import ModelA, ModelB

class ModelBSerializer(serializers.ModelSerializer):
    class Meta:
        model = ModelB
        fields = '__all__'

class ModelASerializer(serializers.ModelSerializer):
    model_bs = ModelBSerializer(many=True, read_only=True)

    class Meta:
        model = ModelA
        fields = '__all__'

from rest_framework import viewsets
from .models import ModelA, ModelB
from .serializers import ModelASerializer, ModelBSerializer

class ModelAViewSet(viewsets.ModelViewSet):
    queryset = ModelA.objects.all()
    serializer_class = ModelASerializer

class ModelBViewSet(viewsets.ModelViewSet):
    queryset = ModelB.objects.all()
    serializer_class = ModelBSerializer

from django.urls import include, path
from rest_framework import routers
from .views import ModelAViewSet, ModelBViewSet

router = routers.DefaultRouter()
router.register(r'modela', ModelAViewSet)
router.register(r'modelb', ModelBViewSet)

urlpatterns = [
    path('', include(router.urls)),
]