如何将条件放在包含的模型序列化中？

# models.py
from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)
    # other fields

class BlogPost(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField()
    author = models.ForeignKey(Author, on_delete=models.CASCADE)
    condition = models.BooleanField(default=False)  # 条件字段

# serializers.py
from rest_framework import serializers

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = '__all__'

class BlogPostSerializer(serializers.ModelSerializer):
    author = AuthorSerializer()
    condition = serializers.SerializerMethodField()  # 自定义字段

    def get_condition(self, obj):
        if obj.condition:
            return "条件满足"
        else:
            return "条件不满足"

    class Meta:
        model = BlogPost
        fields = '__all__'

# views.py
from rest_framework import generics

class BlogPostList(generics.ListAPIView):
    queryset = BlogPost.objects.all()
    serializer_class = BlogPostSerializer