Question

如何在另一个序列化程序中添加序列化程序？这就是我的意思：

我有一个UserProfile模型：

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    photo =  models.URLField(max_length=128)

我的帖子来自用户：

class Posts(models.Model):
    # ... post fields

我想用我的UserProfile序列化用户和照片，以及该用户的帖子。这是我的目标：

{ "user": <User fields serialized>, 
  "photo": "www.example.com/path/to/file", 
  "posts": "[{"from_user": "me", "message": "post message} , 
             {"from_user": "me", "message": "post message2"}, ... etc],"
}

在我的views.py中，我首先收集来自该用户的帖子：

user = User.objects.get(pk=1)
user_profile = UserProfile.objects.get(user=user)
user_profile_serializer = UserProfileSerializer(user_profile)

posts = Posts.objects.get_posts_from_user(user)
post_serializer = PostsSerializer(posts, many=True)
# somehow append my post_serializer into my user_profile_serializer?

这是我的PostsSerializer.py：

class PostsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Posts
        fields = ('__all__')

这是我的UserSerializer.py：

class UserProfileSerializer(serializers.ModelSerializer):
    # somehow filter the results depending on User
    posts_serializer = PostsSerializer(many=True)
    class Meta:
        model = UserProfile
        fields = ('__all__')

我已尝试序列化用户个人资料，因为我在UserProfileSerializer中添加了一个序列化变量，我认为它会自动添加posts字段。它只显示序列化的User Profiler，完全忽略了帖子。

Answer 1

尝试使用SerializerMethodField从PostsSerializer获取帖子，并在“帖子”字段中手动将其添加到UserProfileSerializer输出中，例如

class UserProfileSerializer
    ...
    posts = serializers.SerializerMethodField()

    class Meta:
        fields = ("posts", ... other fields, ...}

    def get_posts(self, user):
        posts = Posts.objects.get_posts_from_user(user)
        return PostsSerializer(posts, many=True, context=self.context).data

Django：将两个序列化器一起添加？

1 个答案: