[Django prac][DRF with N:1 Relation] 4.

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단일 댓글을 조회하기 위한 코드를 작성해보자 

이건 전체 댓글 조회랑은 또 다르다. 

 

단일 댓글을 조회하기 위해서는 

반드시 그 pk값 

검색할 수 있는 pk값을 주소로부터 받아와야하기 때문이다.  

---

# articles > urls.py 

from django.urls import path
from . import views


urlpatterns = [
    path('articles/', views.article_list),
    path('articles/<int:article_pk>/', views.article_detail),
    path('comments/', views.comment_list),
    path('comments/<int:comment_pk>/', views.comment_detail),
]

 

# articles > views.py 

 

from rest_framework.response import Response
from rest_framework.decorators import api_view
from rest_framework import status
from .serializers import ArticleListSerializer, ArticleSerializer, CommentSerializer
from .models import Article, Comment

@api_view(['GET', 'POST'])
def article_list(request):
    if request.method == 'GET':
        articles = Article.objects.all()
        serializer = ArticleListSerializer(articles, many=True)
        return Response(serializer.data)

    elif request.method == 'POST':
        serializer = ArticleSerializer(data=request.data)
        if serializer.is_valid(raise_exception=True):
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        # return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

@api_view(['GET', 'DELETE', 'PUT'])
def article_detail(request, article_pk):
    article = Article.objects.get(pk=article_pk)
    if request.method == 'GET':
        serializer = ArticleSerializer(article)
        return Response(serializer.data)

    elif request.method == 'DELETE':
        article.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

    elif request.method == 'PUT':
        serializer = ArticleSerializer(
            article, data=request.data, partial=True
        )
        if serializer.is_valid(raise_exception=True):
            serializer.save()
            return Response(serializer.data, status=status.HTTP_200_OK)
        # return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

@api_view(['GET'])
def comment_list(request):
    # 전체 댓글 조회
    comments = Comment.objects.all()
    # 직렬화 진행
    serializer = CommentSerializer(comments, many=True)
    return Response(serializer.data)

@api_view(['GET'])
def comment_detail(request, comment_pk):
    # 단일 댓글 조회
    comment = Comment.objects.get(pk=comment_pk)
    # 직렬화 진행
    serializer = CommentSerializer(comment)
    return Response(serializer.data)

---

# 서버 켜기 

save all 

python manage.py runserver

 

# 포스트맨으로 요청보내기

http://127.0.0.1:8000/api/v1/comments/1/