django rest 框架不返回 json

Question

I have writen hello word programme and want to return json format data but it does not working. Please look into my code URL file

from django.conf.urls import url
from rest_framework.urlpatterns import format_suffix_patterns
from login import views

urlpatterns = [
    url(r'^hello_world/$', views.hello_world),
]

View file

from django.shortcuts import render
from rest_framework import status
from rest_framework.response import Response
from rest_framework.decorators import api_view
# Create your views here.

@api_view()
def hello_world(request, format=None):
    return Response({"message": "Hello, world!"})

http://localhost:8000/login/hello_world/ hit a url

get an error

TemplateDoesNotExist at /login/hello_world/

rest_framework/api.html

i want this data in json format

Answer 1

You don't need Django Rest Framework to return Json data that are so simple. If you're just returning such form of data use JsonResponse .

# views/hello_world.py

from django.http import JsonResponse

def hello_world(request):
    return JsonResponse({'message': 'Hello, world!'})

On the other hand, if you want to create an API with Django Rest Framework, you should better start with their tutorial and then move on to more advanced techniques.

Answer 2

Try http://localhost:8000/hello_world/ based on url patern. https://docs.djangoproject.com/en/1.10/topics/http/urls/ The 'r' in front of each regular expression string is optional but recommended. It tells Python that a string is “raw” – that nothing in the string should be escaped

Answer 3

first install djangorestframework then add 'rest_framework' in Installed app in settings.py Example:`

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'channels',
    'chat',
    'django_extensions',
    'rest_framework',
    'rest_framework.authtoken',
]`