Codeigniter CSRF valid for only one time ajax request

Question

I want to upload image on the server on change event of jQuery but using codeigniter csrf I am able to upload image only one time. How can I upload images using ajax for mul

Answer 1

add this at a js file which is loaded every page (I put this at the end of jquery.js )

    $.ajaxSetup({
        beforeSend:function(jqXHR, Obj){
            var value = "; " + document.cookie;
            var parts = value.split("; csrf_cookie_name=");
            if(parts.length == 2)   
            Obj.data += '&csrf_token='+parts.pop().split(";").shift();
        }
    });

(notice that in every ajax request you can not have empty data to send)

"csrf_cookie_name" at top defined in config.php

$config['csrf_cookie_name'] = 'csrf_cookie_name';