django - HTTP/1.0 301永久移动-Django

Question

我已经使用djangorestframework创建了一个API，但是当我使用 python manage.py runserver 命令在终端中运行它时，它显示“HTTP/1.0 301永久移动”错误。 This the Message which it shows

但是很酷的事情是，当我在浏览器中运行它时，它会显示数据。
This the result in Chrome

我想知道它发生了什么。

在这种情况下，POST调用也不起作用。

下面是代码:

serializers.py

from rest_framework import serializers
from snippets.models import Snippet

class SnippetSerializer(serializers.ModelSerializer):
            class Meta:
                model = Snippet
                fields = ('title','code',)

def create(self, validated_data):
    return Snippet.objects.create(**validated_data)


def update(self, instance, validated_data):
    instance.title = validated_data.get('title', instance.title)
    instance.code = validated_data.get('code', instance.code)
    instance.save()
    return instance

Views.py

from django.shortcuts import render
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from rest_framework.renderers import JSONRenderer
from rest_framework.parsers import JSONParser
from snippets.models import Snippet
from snippets.serializers import SnippetSerializer


# Create your views here.


class JSONResponse(HttpResponse):
    def __init__(self,data,**kwargs):
        content = JSONRenderer().render(data)
        kwargs['content_type']='application/json'
        super(JSONResponse, self).__init__(content, **kwargs)

@csrf_exempt
def snippet_list(request):
    """
    List all code snippets, or create a new snippet.
    """
    if request.method == 'GET':
        snippets = Snippet.objects.all()
        serializer = SnippetSerializer(snippets, many=True)
        return JSONResponse(serializer.data)

    elif request.method == 'POST':
        data = JSONParser().parse(request)
        serializer = SnippetSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return JSONResponse(serializer.data, status=201)
        return JSONResponse(serializer.errors, status=400)

@csrf_exempt
def snippet_detail(request, pk):
    """
    Retrieve, update or delete a code snippet.
    """
    try:
        snippet = Snippet.objects.get(pk=pk)
    except Snippet.DoesNotExist:
        return HttpResponse(status=404)

    if request.method == 'GET':
        serializer = SnippetSerializer(snippet)
        return JSONResponse(serializer.data)

    elif request.method == 'PUT':
        data = JSONParser().parse(request)
        serializer = SnippetSerializer(snippet, data=data)
        if serializer.is_valid():
            serializer.save()
            return JSONResponse(serializer.data)
        return JSONResponse(serializer.errors, status=400)

    elif request.method == 'DELETE':
        snippet.delete()
        return HttpResponse(status=204)

型号

from __future__ import unicode_literals

from django.db import models

# Create your models here.


class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()


class Meta:
    ordering = ('created',)

Answer 1

301不是错误，而是重定向。在命令行中，您请求的URL不带斜杠，但您的URL模式希望该斜杠在那里。在这种情况下，Django有一个不错的convenience feature返回重定向。

与您的命令行HTTP客户端不同，您的浏览器会识别重定向，然后跟进对新URL的第二个请求，包括尾部斜杠。