python - DJango - 如何在序列化程序中将完整模型对象作为新字段传递

Question

我想将完整的 Artist 模型对象传递给序列化程序，因此我创建了一个新字段serializers.SerializerMethodField并在其中传递了 Artist 对象。但我得到了错误。

getattr(): attribute name must be string

class ArtistSerializer(serializers.ModelSerializer):
    similar_artists = serializers.SerializerMethodField(Artist.objects.all())

    class Meta:
        model = Artist
        fields = ('id', 'artist_name', 'albums', 'similar_artists')

我想我完全错了。那么有没有办法通过带有手动字段的序列化程序在单个对象中传递所有值或所有艺术家。

我想在序列化程序中实现类似的东西。

 {
        "id": 1,
        "albums": [
            {
                "id": 1,
                "album_name": "Fearless (Taylor's Version)"
            },
            {
                "id": 7,
                "album_name": "Reputation"
            },
            {
                "id": 8,
                "album_name": "1989"
            }
        ],
        "artist_name": "Taylor Swift",
        "similar_artists": [
           {
              Artist Object
           }
         ]
 
    },

模特艺术家

class Artist(models.Model):
    artist_name = models.CharField(max_length=100)
    album = models.CharField(max_length=1000)
    
    def __str__(self):
        return self.artist_name 

标签： pythonarraysdjangoobjectdjango-rest-framework

Answer 1

class ArtistSerializer(serializers.ModelSerializer):

    class Meta:
        model = Artist
        fields = ('id', 'artist_name', 'albums',)


class ArtistSimilarSerializer(serializers.ModelSerializer):
    similar_artists = serializers.SerializerMethodField()

    def get_similar_artists(self, artist):
        queryset = Artist.objects.all()
        return ArtistSerializer(queryset, many=True).data


    class Meta:
        model = Artist
        fields = ('id', 'artist_name', 'albums', 'similar_artists')

尝试这个