AJAX call not going to the server

i am using ajax to populate a drop down but the call is not going to the server. getting the following error in fire bug

POST 0

status 404 not found

my code is:

function selectChildCategory(parent,child){
    var url = "<?php echo url::site('admin/video/showSubCategory/')?>";
    if(parent != "")
    {
 开发者_运维问答           if(child != 0){
               url = url+parent+"/"+child;
            }else{
               url = url+parent+"/"+0;
            }
            $.ajax({
                url: url,
                type:"POST",
                success: function(select)
                {
                    //alert(select);
                    $("#sub_category").html(select);
                }
            });
    }
}

the parammeters are showing correct values....but call is not going to the server. The URL is correct

please advise.

404 Error code means that the page your are trying to call does not exists.

You are buildng a HTTP path using your parent and child variables but if the formed url does not exists (or is not captured by any mod_rewrite) a 404 error is shown.

For example, for parent "0" and child "0" the url /admin/video/showSubCategory/0/0 exists?

Also if you are using something like mod_rewrite is really correctly configured?

Try first calling the URL manually to check if the url generated by javascript really exists.

Have you checked that the URL is available via a POST request?