如何使用数据表来检索额外的HTTP变量

I am using datatables plugin for jquery and I am using the fnServerParams function.I have sent some extra variables but I am not sure how to retrieve them ont he server_processing file.

code :

$('#fleetsTable').dataTable( {
    "bProcessing": true,
    "bServerSide": true,
    "sAjaxSource": "/server_processing.php",
    "fnServerParams": function ( aoData ) {
        aoData.push( { "name": "customerId", "value": "6" } );
    }
} );

this is what I have tried in the server_processing.php file

$customerId = "";
if ( isset( $_GET['customerId'] ) )
{
    $customerId = $_GET['customerId'] ;
}

this does not seem to be working..

thaks for the help

Andre's comment is wrong. Datatables requires you to send parameters in the format of

aoData.push( { "name": "customerId", "value": "6" } );

This would generate a URL of:

../server_processing.php?customerId=6

in your server code,

$customerId = $_GET['customerId'] ;

should return the value. You'll need more debugging in your php file to determine where the variable is getting lost. Most likely a spelling mistake.