[Django] JSON 직렬화 - Serializer

(Model)Form vs (Model)Serializer

Django	Djnago Rest Framework
Form/ModelForm	Serializer/ModelSerializer
Model로부터 Field 읽어옴
유효성 검사
HTML Form 생성	JSON 문자열 생성

 

django와 django rest framework 설치

$ pip install django

$ pip install djangorestframework

 

settings.py

# INSTALLED_APPS에 등록

'rest_framework'

 

models.py

from django.db import models

# Create your models here.
class Post(models.Model):
    title = models.CharField(max_length=100)
    body = models.TextField()

 

$ python manage.py makemigrations

$ python manage.py migrate

 

serializer.py

from .models import Post
from rest_framework import serializers

class PostSerializer(serializers.ModelSerializer):
    class Meta:
        model = Post
        # fields = '__all__'
        fields = ('id', 'title', 'body') # id는 pk값과 동일한 기능
        read_only_fields = ('title',) # 리스트도 가능하지만 튜플 사용을 권장함

 

views.py

from rest_framework import viewsets
from .models import Post
from .serializer import PostSerializer

# CBV

class PostViewSet(viewsets.ModelViewSet):
    queryset = Post.objects.all()
    serializer_class = PostSerializer

 

urls.py

from django.urls import path, include
from rest_framework.routers import DefaultRouter
from . import views

# django rest framework -> router -> url

router = DefaultRouter()
router.register('post', views.PostViewSet)

urlpatterns = [
    path('', include(router.urls)),
]