我想要的是一个ManyToMany关系中特定字段的列表，而不是该字段所在字典的列表。
例如，使用下面的代码，我得到如下所示的结果

# models.py

from django.db import models

class Bar(models.Model):
    title = models.CharField(max_length=255)

class Foo(models.Model):
    title = models.CharField(max_length=255)
    bars = models.ManyToManyField(Bar, related_name="foos")

# serializers.py

from rest_framework.serializers import ModelSerializer 
from .models import Bar, Foo

class BarSerializer(ModelSerializer):
    class Meta:
        model = Bar
        fields = ("title",)

class FooSerializer(ModelSerializer):
    bars = BarSerializer(many=True)

    class Meta:
        model = Foo
        fields = ("title", "bars")

# views.py

from rest_framework.generics import ListAPIView
from .serializers import FooSerializer
from .models import Foo

class FooAPIView(ListAPIView):
    queryset = Foo.objects.prefetch_related("bars")
    serializer_class = FooSerializer

字符串
结果：

[
    {
        "title": "foo 1",
        "bars": [
            { "title": "bar title 1" },
            { "title": "bar title 2" },
            { "title": "bar title 3" }
        ]
    },
    {
        "title": "foo 2",
        "bars": [
            { "title": "bar title 4" },
            { "title": "bar title 5" },
            { "title": "bar title 6" }
        ]
    },
    {
        "title": "foo 3",
        "bars": [
            { "title": "bar title 7" },
            { "title": "bar title 8" },
            { "title": "bar title 9" }
        ]
    }
]

型
但我想要的是bars字段的标题列表。
预期结果：

[
  {
    "title": "foo 1",
    "bars": ["bar title 1", "bar title 2", "bar title 3"]
  },
  {
    "title": "foo 2",
    "bars": ["bar title 4", "bar title 5", "bar title 6"]
  },
  {
    "title": "foo 3",
    "bars": ["bar title 7", "bar title 8", "bar title 9"]
  }
]

型
有没有什么方法可以做到这一点，而不必覆盖Django方法？