Django Rest Framework: XMLHttpRequest cannot load http://127.0.0.1:8000/xyz/api/abc

Question

SOLUTION: Add a trailing slash to the end of the url...

"http://127.0.0.1:8000/xyz/api/abc/" instead of "http://127.0.0.1:8000/xyz/api/abc"

....

I have successfully created a Django Rest API and am able to store and host data locally it seems. I have built an angularjs1.0 app separately and am attempting to extract the data via $http get request however I'm running into this error:

XMLHttpRequest cannot load http://127.0.0.1:8000/xyz/api/abc. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://172.20.9.163:8080' is therefore not allowed access.

I have attempted to install CORS and have added it to my INSTALLED_APPS, yet nothing seems to be working yet.

This is the get request:

getABC : function() {
            $http({
                method: 'GET',
                url: 'http://127.0.0.1:8000/xyz/api/abc',
                cache: false
            }).success(function(data) {
                console.log(data)
                callback(data);
            });
        },

Here's a look at my Django settings.py file:

INSTALLED_APPS = (
    'xyz',
    'corsheaders',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
)

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',

)

CORS_ORIGIN_ALLOW_ALL = True

Can you open the Network tab in Dev tools and check the response to your AJAX request? Does it actually contain the Access-Control-Allow-Origin header? — Igor Raush
– Igor Raush, Commented Oct 27, 2015 at 18:38
Sorry, where should I be seeing this? I've got the network tab open but I don't see an ajax request response anywhere. — tryingtolearn
– tryingtolearn, Commented Oct 27, 2015 at 18:44
@IgorRaush "Remote Address:127.0.0.1:8000 Request URL:127.0.0.1:8000/xyz/api/abc Request Method:GET Status Code:301 MOVED PERMANENTLY (from cache)" And when clicking the "response" tab it says "This request has no response data available." — tryingtolearn
– tryingtolearn, Commented Oct 27, 2015 at 18:46
Something is off. Your API is returning a redirect response. Is there a Location header on that response? Can you run curl --head http://localhost:8000/xyz/api/abc from the command line? — Igor Raush
– Igor Raush, Commented Oct 27, 2015 at 19:11
Also, it appears that the request may not even reach the server, it is cached in the browser as a 301 Moved Permanently... — Igor Raush
– Igor Raush, Commented Oct 27, 2015 at 19:12

Igor Raush · Accepted Answer · 2015-10-27 20:06:30Z

11

TL;DR

Issue your AJAX request to a slash-appended URL.

Explanation

After our discussion, it appears that the culprit is Django's automatic APPEND_SLASH = True which is enabled when CommonMiddleware is enabled.

This causes the AJAX request from your Angular app to first hit a 301 Moved Permanently redirect to the slash-appended URL. However, the corsheaders middleware does not act on this response, so the browser complains about a missing Access-Control-Allow-Origin header.

This is solved by requesting the slash-appended URL directly, and bypassing the 301 redirect altogether.

$http({
    method: 'GET',
    url: 'http://127.0.0.1:8000/xyz/api/abc/',  // trailing slash here
    cache: false
}).success(...);

edited Oct 27, 2015 at 20:06

answered Oct 27, 2015 at 19:58

Igor Raush

15.3k1 gold badge38 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ramesh Ponnusamy · Accepted Answer · 2020-05-05 07:43:15Z

Install django-crops-headers

pip install django-cors-headers

In setting.py:

MIDDLEWARE = [
             #...
                 'corsheaders.middleware.CorsMiddleware',
                 'django.middleware.common.CommonMiddleware',
             ]
INSTALLED_APPS = [

                'corsheaders',
                 #...
                ]

Set CORS_ORIGIN_ALLOW_ALL is True

CORS_ORIGIN_ALLOW_ALL = True  # this allows all domains

Or to allow specific domains 

CORS_ORIGIN_WHITELIST = (
'http://example.com',
'http://127.0.0.1:8000',
'http://localhost:8000',
 )

In Ajax call(front end) add headers:

 var get_request = $.ajax({
  type: 'GET',
  "headers": {
          "accept": "application/json",
          "Access-Control-Allow-Origin":"*"
      },
  url: 'http://example.com',
});

If it is not solved, You should enable the core in requesting server(http://example.com)

Collectives™ on Stack Overflow

Django Rest Framework: XMLHttpRequest cannot load http://127.0.0.1:8000/xyz/api/abc

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related