如何在django rest框架中验证集合中实例的唯一性

from django.db import models

class MyModel(models.Model):
    unique_field = models.CharField(max_length=100, unique=True)
    # 其他字段...

from rest_framework import serializers
from .models import MyModel

class MyModelSerializer(serializers.ModelSerializer):
    class Meta:
        model = MyModel
        fields = '__all__'

    def validate_unique_field(self, value):
        # 自定义唯一性验证逻辑
        if MyModel.objects.filter(unique_field=value).exists():
            raise serializers.ValidationError("该字段已存在")
        return value

from rest_framework import viewsets
from .models import MyModel
from .serializers import MyModelSerializer

class MyModelViewSet(viewsets.ModelViewSet):
    queryset = MyModel.objects.all()
    serializer_class = MyModelSerializer