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django - Django 休息框架端点

问题描述

我需要获取此端点 /comments/int:post_id/ 我可以获取和发布评论和帖子，但我需要显示特定帖子的所有评论。我不知道如何连接它。我的代码看起来像

评论网址

urlpatterns = [
    path('', views.CommentsView.as_view()),
    path('<int:post_id>/', views.CreateCommentsView.as_view()),
]

评论视图.py

# I get all comments/
class CommentsView(ListCreateAPIView):
    queryset = Comment.objects.all()
    serializer_class = CommentSerializer

# Comments to specific post
class CreateCommentsView(ListCreateAPIView):
    queryset = Comment.objects.all()
    serializer_class = CommentSerializer
    lookup_url_kwarg = 'post_id'

     def perform_create(self,serializer):
         post = self.kwargs.get('post_id')
         post =set.get_queryset().filter(id = 'post_id')
         post.comments.add(comment)
         post = Post.objects.filter(id=self.kwargs.get('post_id'))
         serializer.save(user=self.request.user, post=post)

评论序列化器

from rest_framework import serializers
from .models import Comment
from django.contrib.auth import get_user_model
User = get_user_model()


class CommentSerializer(serializers.ModelSerializer):
    class Meta:
        model = Comment
        fields = ['id', 'user', 'post', 'content', 'created']

class UserSimpleSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ['username']

class CommentSimpleSerializer(serializers.ModelSerializer):
    user = UserSimpleSerializer()
    class Meta:
        model = Comment
        fields = ['user', 'content', 'created']

后视图.py

class PostList(generics.ListCreateAPIView):
    queryset = Post.objects.all()
    serializer_class = PostSerializer


class PostDetail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Post.objects.all()
    serializer_class = PostSerializer

class LikePost(generics.UpdateAPIView):
    permission_classes = [IsNotPostUser]
    queryset = Post.objects.all()
    serializer_class = PostSerializer

标签： djangodjango-rest-frameworkdjango-viewsdjango-urlsendpoint

解决方案

您可以传递端点的post_idin url 参数并调用 HTTP GET 方法。/comments/然后，CommentsView您需要覆盖该get_queryset方法。你的实现会像

class CommentsView(ListCreateAPIView):
    serializer_class = CommentSerializer

    def get_queryset(self):
        query = self.request.query_params.get('post_id', None)
        if query is not None:
            queryset = Comment.objects.filter(post_id=post_id)
        else:
            queryset = Comment.objects.all()
       return queryset

此/comments/端点将返回所有评论，而此端点将返回/comments/?post_id=1仅与指定帖子相关的评论。

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