Backbone & Slim PHP - Access-Control-Allow-Headers - Can GET information, can't POST it?

Question

I'm using Backbone and the Slim PHP framework. I'm trying to post information to my API, however Access-Control-Allow-Headers keeps causing me problems...

My console reads:

    OPTIONS http://api.barholla.com/user/auth 405 (Method Not Allowed) zepto.min.js:2
XMLHttpRequest cannot load http://api.barholla.com/user/auth. Request header field Content-Type is not allowed by Access-Control-Allow-Headers.

My headers read:

Request URL:http://api.barholla.com/user/auth
Request Method:OPTIONS
Status Code:405 Method Not Allowed
Request Headersview source
Accept:*/*
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:origin, content-type, accept
Access-Control-Request-Method:POST
Connection:keep-alive
Host:api.barholla.com
Origin:http://localhost
Referer:http://localhost/barholla/app/
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Response Headersview source
Access-Control-Allow-Origin:*
Allow:POST
Connection:close
Content-Type:application/json
Date:Thu, 08 Nov 2012 16:12:32 GMT
Server:Apache
Transfer-Encoding:chunked
X-Powered-By:Slim
X-Powered-By:PleskLin

My headers in my slim index.php file are:

$res = $app->response();
$res->header('Access-Control-Allow-Origin', '*');
$res->header("Access-Control-Allow-Methods: PUT, GET, POST, DELETE, OPTIONS");

To handle the post data:

$app->post('/user/auth', function () use ($app) {
//code here
});

In my javascript (i'm using the backbone framework) my code is:

 App.userAuth = new App.UserAuthModel({
  username: $('#username').val(),
  password: hex_md5($('#password').val())
});

App.userAuth.save({}, {
  success: function(model, resp) {
    console.log(resp);
  },
  error: function(model, response) {
    console.log(response);
  }
});

Any help would be much appreciated, I've been stuck on this for ages!

Answer 1

I had a similar cross domain POST problem (in fact with all headers except GET). The following resolved it:

if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']) && (   
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'POST' || 
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'DELETE' || 
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'PUT' )) {
             header('Access-Control-Allow-Origin: *');
             header("Access-Control-Allow-Credentials: true"); 
             header('Access-Control-Allow-Headers: X-Requested-With');
             header('Access-Control-Allow-Headers: Content-Type');
             header('Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE, PUT'); // http://stackoverflow.com/a/7605119/578667
             header('Access-Control-Max-Age: 86400'); 
      }
  exit;
}