Django笔记 Django REST framework的Serializer 2_django serializer class meta:-优快云博客

本文链接：https://blog.youkuaiyun.com/SVALBARDKSY/article/details/51191600

本文介绍了如何使用Django REST框架的Serializer来隐藏特定字段及显示外键的具体信息，并提供了具体的实现示例。

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Serializer的几种设置

隐藏特定字段

如下，设置 writer 为只读就可以隐藏。

class ArticleSerializer(serializers.ModelSerializer):
+   writer = serializers.IntegerField(write_only=True)
    class Meta:
        model = Article

$ curl http://localhost:8000/api/articles/3.json
{“id”:3,”title”:”hoge”,”contents”:”fuga”}
writer消失不见了。

外键不是key值，显示具体信息

class ArticleSerializer(serializers.ModelSerializer):
+   writer = WriterSerializer()
    class Meta:
        model = Article

将writer字段设为WriterSerializer

$ curl http://localhost:8000/api/articles/3.json
{“id”:3,”writer”:{“id”:1,”name”:”racchai”},”title”:”hoge”,”contents”:”fuga”}
就可以显示具体的信息

同时生成外键数据时

ArticleSerializer如下

class ArticleSerializer(serializers.ModelSerializer):
    writer = WriterSerializer()
    class Meta:
        model = Article

+   def create(self, validated_data):
+       writer = Writer(**validated_data.pop('writer'))
+       writer.save()
+       return super(ArticleSerializer, self).create(dict(validated_data, **{'writer': writer}))

在默认的 create 前生成Writer数据。
测试为
$ curl http://localhost:8000/api/articles.json -X POST -d “{\”writer\”:{\”name\”:\”new writer\”},\”title\”:\”aaa\”,\”contents\”:\”bbb\”}” -H “Content-Type: application/json” │
{“id”:4,”writer”:{“id”:2,”name”:”new writer”},”title”:”aaa”,”contents”:”bbb”}
就可以登录了。

测试一下。
$ curl http://localhost:8888/api/articles/4.json
{“id”:4,”writer”:{“id”:2,”name”:”new writer”},”title”:”aaa”,”contents”:”bbb”}