Please how do i make my update code in js.bootgrid table

1 
$(document).on("loaded.rs.jquery.bootgrid", function()
 {
  productTable.find(".update").on("click", function(event)
  {
   var product_id = $(this).data("row-id");
    $.ajax({
    url:"fetch_single.php",
    method:"POST",
    data:{product_id:product_id},
    dataType:"json",
    success:function(data)
    {
     $('#productModal').modal('show');
     $('#category_id').val(data.category_id);
     $('#product_name').val(data.product_name);
     $('#product_qty').val(data.product_qty);
     $('#product_price').val(data.product_price);
     $('.modal-title').text("Edit Product");
     $('#product_id').val(product_id);
     $('#action').val("Edit");
     $('#operation').val("Edit");
    }
   });
  });
 });
2
  1. Is this project on CodePen? Could you link to that instead?
  2. What is it that you’re trying to do?
  3. What is happening?
  4. What do you think should be happening?