Question

I am using HMVC codeigniter. I am trying to use jquery ajax first time. When i use POST then it gives undefined error while it response me the data while using GET.

         $.ajax({
          type: "POST",
          url: filelink+"cart/add_cart_item",
          data: {"product_id":id,"quantity":qty,"ajax":"1"},
          dataType: "json",
              success: function(msg){
           alert( "Data Saved: " + msg );
           },
               error: function(jqXHR, textStatus, errorThrown){ 
           alert(textStatus + " " + errorThrown);
            }
      });

What I have tried so far after googling and SO-ing-

1. my file url location is accessible directly. I checked it. giving response.

2. Firebug is giving 500 internal server error for the same file.

3. Using Get is responding me back well

4. added json in the datatype

controller function

  class Cart extends CI_Controller { // Our Cart class extends the Controller class

  function __construct()
     {
    parent::__construct();  
    $this->template->set('controller', $this);
     }

  function _remap()
    {
       $uri2 = $this->uri->segment(2);  
       if (is_numeric($uri2) OR $uri2 == FALSE) {
        $this->index(); 
       } else if ($uri2 == 'add_cart_item') {
        $this->add_cart_item();
       } else if ($uri2 == 'show_cart') {
        $this->show_cart();
       }
     }

function add_cart_item(){
      echo "asdfsadfdsf";
      exit; 
    }
  }

can anybody please help me out?

Answer 1

Managed to find the solution. The problem was due to CI_TOKEN which is sent with the FORM. That was absent and due to which POST method was giving 500 Internal server Error. I added following in my view file.

 <?php echo form_open_multipart(); ?>
 <?php echo form_close(); ?>

and sent ci_token with the ajax post request.

 var ci_token = formObj.find('input[name=ci_token]').val();
 var qty = 1;
 var dataString = 'product_id='+ id + '&quantity=' + qty + '&ajax=' + 1 
 +'&ci_token=' +            ci_token;

This solved the problem. I am not sure but this is called CSRF related some problem

Thanks