Question

我jush有一个模型有两个字段，一个是post，anther是一个外键，它与django User模型有关。就像这样：

from django.contrib.auth.models import User

class Post(models.Model):
    post = models.CharField(max_length=20)
    author = models.ForeignKey(User, related_name='posts')

现在我定义一个用户序列化器禁止Post，就像这样：

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = ('id', 'post', 'author')

class UserSerialzier(serializers.ModelSerializer):

    posts = PostSerializer()

    class Meta:
        model = get_user_model()
        fields = ('id', 'username', 'snippets', 'posts')

我只想返回一个包含用户数据和帖子数据的json。但是，我想得到的帖子数据是按条件过滤的，而不是所有的帖子数据，我的观点是这样的：

class UserDetail(generics.RetrieveAPIView):

    serializer_class = HomeSerializer

    def get_queryset(self):
        post_set = self.request.user.posts.filter(post='python')
        query_set = User.objects.filter(posts=post_set, username='admin')
        return query_set

我希望得到结果：

{
    "id": 1, 
    "username": "rsj217", 
    "posts": [
        {
            "id": 1, 
            "post": "python", 
            "author": {
                "id": 1, 
                "username": "rsj217", 
            }
        }, 
        {
            "id": 2, 
            "post": "python", 
            "author": {
                "id": 1, 
                "username": "rsj217", 
            }
        }
    ]
}

但事实上，我得到的结果如下：

{
    "id": 1, 
    "username": "rsj217", 
    "posts": [
        {
            "id": 1, 
            "post": "python", 
            "author": {
                "id": 1, 
                "username": "rsj217", 
            }
        }, 
        {
            "id": 2, 
            "post": "python", 
            "author": {
                "id": 1, 
                "username": "rsj217", 
            }
        },
         {
            "id": 3, 
            "post": "ruby", 
            "author": {
                "id": 1, 
                "username": "rsj217", 
            }
        }
    ]
}

我无法过滤帖子字段＆＃34; ruby＆＃34; ??? ，我不知道哪里消失了

Answer 1

我认为检索查询集的方式是错误的。试试这样：

    query_set = User.objects.filter(post__in=post_set, username='admin')

如何在django rest框架中过滤多个序列化程序

1 个答案: