Question

在我的serializers.py中，我可以这样做：

class BoxSerializer(serializers.ModelSerializer):
    user = serializers.ReadOnlyField(source='user.email')
    playlist = PrimaryKeyRelatedField(allow_null=True, source='playlist.name',
        queryset=Playlist.objects.all(), required=False)

    class Meta:
        model = Box

我甚至可以做这样的事情（硬编码，但有效）：

playlist = PrimaryKeyRelatedField(allow_null=True, source='playlist.name',
            queryset=Playlist.objects.filter(user=User.objects.get(id=4)), required=False)

我是新手，我想知道是否有一种方法可以通过某种方法请求。用户可以做类似的事情：

（我知道这是不正确的，这只是为了解释我的观点）：

playlist = PrimaryKeyRelatedField(allow_null=True, source='playlist.name',
            queryset=Playlist.objects.filter(user=request.user), required=False)

或者我可以做这样的事情（再次不正确）：

playlist = PrimaryKeyRelatedField(allow_null=True, source='playlist.name',
        queryset='get_playlists', required=False)

def get_playlists(self):
    user = self.context['request'].user
    return Playlist.objects.filter(user=user)

Answer 1

试试这个：

class BoxSerializer(serializers.ModelSerializer):
    # ...

    def __init__(self, *args, **kwargs):
        user = kwargs['context']['request'].user

        super(BoxSerializer, self).__init__(*args, **kwargs)
        self.fields['playlist'].queryset = Playlist.objects.filter(user=user)

Answer 2

这可能有效：

class UserSerializer(serializer.ModelSerializer):
    email = serializes.EmailField()
    playlists = serializers.PrimaryKeyRelatedField(many=True, read_only=True)
    box = serializer.PrimaryKeyRelatedField(read_only=True)

    class Meta:
        model = User

根据您的模型及其关系，您必须使用某种形式的嵌套序列化程序和/或相关字段。它可能并非完全适合一个Serializer。 Read more about Serializers and there relationships in the docs。

Django Rest Framework中的Serializer字段过滤？

2 个答案: