Question

My web application does Ajax request to a Codeigniter-php code in a remote server. It works in localhost but not with a specific controller in remote host. It is strange because works in localhost for both controllers.
The request:

$.ajax({
    async:true,
    type: "POST",
    dataType: "json",  
    url:"/CI/site/index.php/contact/submitContact",
    data: "", //data example 
    success:arrived,
    error:problems }); 

function arrived(data){
    var dataJson = eval(data);                       
}
function problems(){            
    $("#result").text('Problems.');     
}

I check the arrived with log_message. With the next function works fine:

  function submitContact(){
     log_message('error', 'submitContact. ');
    //If data are received
    if($_POST){
            log_message('error', 'data. [application/controllers/contact.php]');
        }   
    }

However, If I change the request to url:"/CI/site/index.php/control/controlHome", there isn’t any log message and the output is the next:
POST http://www.page.com/CI/site/index.php/control/controlHome 500 (Internal Server Error)

The function /application/controllers/control.php is the next:

 function controlHome(){
    log_message('error', 'controlHome. [application/controllers/control.php]');
    //If data are received
    if($_POST){
         log_message('error', 'data. [application/controllers/control.php]');
    }   
 }

Also I’ve tried with complete url in the ajax code but the result is the same. Any setting is required?

Answer 1

Check this AJAX csrf protection with codeigniter 2. This solve my same problem

http://aymsystems.com/ajax-csrf-protection-codeigniter-20

UPDATE:
I checked your control.php file on my test server.

if($_POST) { /* i only commented gangway library functions  */
} else { /* only replace the load->view with an print_r $data; and its work */ }

And put to comment the gangway library on construct. And control/controlHome works normaly without any error. Check your gangway library THAT’s cause error 500.