[ 06/17 TIL ] Serializer

📌Print all available commands for a QuerySet

for command in dir(hobbys):
    try:
        print(eval(f'hobbys.{command}()'))
        print(eval(f'hobbys.{command}'))
    except:
        pass

결과

📌Serializer

# serializers.py
from rest_framework import serializers
from user.models import User

class HobbySerializer(serializer.ModelSerializer):
    same_hobby_users = serializers.SerializerMethodField()
    def get_same_hobby_users(self,obj):
        user_list = []
        # obj  hobby model's objects
        for user_profile in obj.userprofile_set.all():
            user_list.append(user_profile.user.username)
        return user_list

    class Meta:
        model = HobbyModel
        fields = ["name"]

class UserProfileSerializer(serializer.ModelSerializer):
    hobby = HobbySerializer(many=True) # if input data is QuerySet, need to add 'many=True'

    class Meta:
        model = UserProfileModel
        fields = [
            "introduction", "birthday", "age", "hobby"
        ]

class UserSerializer(serializer.ModelSerializer):
    userprofile = UserProfileSerializer() # object
    hobby

    class Meta:
        model = UserModel
        fields = '__all__'

# views.py
def get(self, request):
    return Response(UserSerializer(request.user).data)

Serializer로 출력되는 결과를 보니, riot API 데이터 출력방식이 serializer라는걸 알았다. 갈고닦을 필요가 있다!