Nested tables in tabs

Example of table nesting in tabs implementation.

public function nested_tables_in_tabs()
{
  $xcrud = get_xcrud();
  $xcrud->table('orders');
  $xcrud->default_tab('Order info');
  
  $orderdetails = $xcrud->nested_table('Order details','orderNumber','orderdetails','orderNumber'); // 2nd level
  $orderdetails->columns('productCode,quantityOrdered,priceEach');
  $orderdetails->fields('productCode,quantityOrdered,priceEach');
  $orderdetails->default_tab('Detail information');
  
  $customers = $xcrud->nested_table('Customers','customerNumber','customers','customerNumber'); // 2nd level 2
  $customers->columns('customerName,city,country');
  
  $products = $orderdetails->nested_table('Products','productCode','products','productCode'); // 3rd level
  $products->default_tab('Product details');
  
  $productLines = $products->nested_table('Product Lines','productLine','productlines','productLine'); // 4th level
    
  $data['content'] = $xcrud->render();
  
  return view('demos', $data);
}