AJAX调用Django视图的内部错误（restframework endpoint） [英] Internal error on AJAX call to a Django view (restframework endpoint)

问题描述

jQUERY：

$.ajax({
            url: '/notify/',
            type:'GET',
            dataType: 'json',
            success: function (data) {
              if (data.is_taken) {
                alert("A user with this username already exists.");
              }
            }
          });

urls.py：

 url(r'^notify/$', views.notify,name='notify'),

views.py：

from django.http import HttpResponse
from django.http import Http404
from django.http import JsonResponse

def notify(request):
    data = {
        'is_taken': Notification.objects.all()
    }
    return JsonResponse(data)

在控制台中调用ajax：

On calling ajax in console:

Failed to load resource: the server responded with a status of 500 (INTERNAL SERVER ERROR)

可能有什么问题？一切都是正确和现实的。 Django 1.8，jQuery 3.1.0

What may be wrong? Everything is correct and present . Django 1.8 , jQuery 3.1.0

编辑：Django错误日志追溯

Django error log traceback

    Internal Server Error: /notify/
Traceback (most recent call last):
  File "/Users/TheKotik/djboy/denv/lib/python3.5/site-packages/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/Users/TheKotik/djboy/blog/views.py", line 212, in notify
    return JsonResponse(data)
  File "/Users/TheKotik/djboy/denv/lib/python3.5/site-packages/django/http/response.py", line 535, in __init__
    data = json.dumps(data, cls=encoder)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/__init__.py", line 237, in dumps
    **kw).encode(obj)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/encoder.py", line 198, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/encoder.py", line 256, in iterencode
    return _iterencode(o, 0)
  File "/Users/TheKotik/djboy/denv/lib/python3.5/site-packages/django/core/serializers/json.py", line 112, in default
    return super(DjangoJSONEncoder, self).default(o)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/encoder.py", line 179, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError: [<Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>, <Notification: Notification object>] is not JSON serializable

推荐答案

你需要确保你r结果（在您的情况下数据）是json可序列化，请注意您正在执行'is_taking'：Notification.objects.all（），你应该这样做：

You need to be sure your result (in your case data) is json serializable, note you are doing 'is_taking': Notification.objects.all(), you should do something like this instead:

from rest_framework.response import Response
from rest_framework.decorators import api_view

@api_view(['GET', ]) 
def notify(request):
    data = {
        'is_taken': NotificationSerializer(Notification.objects.all(), many=True).data
    }
    return Response(data)

并写下 Serializer eg NotificationSerializer 通知

这篇关于AJAX调用Django视图的内部错误（restframework endpoint）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！