Want to override reorder

[zahid]

On reorder an order i want to add some data to my custom table with that reorder cart id how to implement it. I have tried to override the following function in override/classes/order/orderController.php but it didn't worked. I am new to prestashop  any suggestions.

public function postProcess()
{
    parent::postProcess();

    if (Tools::isSubmit('submitReorder') && $id_order = (int) Tools::getValue('id_order')) {
[spam-filter]

 Note: I want when somebody click on reorder then reorder take place that is perfectly working but with that order cart_id i save some data in my custom table and with reorder cart_id i also to duplicate that data in that custom table.I don't know how to do that.