django - 获取序列化器中字段的属性(django rest 框架)

Question

序列化程序.py

from django.contrib.auth.models import User
from engine.models import Game
from rest_framework import serializers

class GameSerializer(serializers.ModelSerializer):
    class Meta:
        model = Game
        fields = (
            'game_name',
            'level',
            'game_type',
            'creator',
            'id',
        )

我想获得 creator.username 因为 creator 只返回作为创建者的用户对象的 id 的整数。我怎样才能得到creator.username 而不是creator？

Answer 1

您可以按如下方式覆盖序列化程序方法字段以获得 creator.username 作为 creator 如下:

class GameSerializer(serializers.ModelSerializer):
    creator = serializers.SerializerMethodField(read_only=True)

    def get_creator(self, obj):
        # obj is model instance
        return obj.creator.username

    class Meta:
        model = Game
        fields = (
            'game_name',
            'level',
            'game_type',
            'creator',
            'id',
        )