Drf 序列化 ModelSerializer跨表取数据

1、对于OneToOne、Foreignkey、choices字段可以使用source取出相关信息：

class CourseSerializer(serializers.ModelSerializer):

    # choices字段

    degree = serializers.CharField(source='get_degree_display')

    # ForeignKey字段

    teacher = serializers.CharField(source='teacher.name')

    class Meta:

        model = Course

        fields = '__all__'

2、对于ManyToMany字段，例如：

class BookSerializers(serializers.ModelSerializer):

    authors  = serializers.SerializerMethodField()

    publisher = serializers.CharField(source='publisher.title')

    class Meta:

        model = Book

        fields = "__all__"  # 可选择显示字段

        # exclude = ['price',]  # 排除字段

    def get_authors(self,obj):

        query_set = obj.authors.all()

        return [{'name':obj.name} for obj in query_set]

{

    "id": 2,

    "authors": [

        {

            "name": "蒋勋"

        }

    ],

    "publisher": "长江出版社",

    "title": "蒋勋说唐诗",

    "pub_date": "2018-11-04",

    "word_count": 12,

    "price": 34

}

巴特西

Drf 序列化 ModelSerializer跨表取数据

1、对于OneToOne、Foreignkey、choices字段可以使用source取出相关信息：

2、对于ManyToMany字段，例如：

最新文章

热门文章