public function update($orderId, $orderItemId)
{
$item = Store\OrderItem::findOrFail($orderItemId);
if ($item->order_id !== (int) $orderId) {
return error_popup('invalid order id for this item.');
}
if ($item->order->status !== 'paid') {
return error_popup("order status {$item->order->status} is invalid.");
}
$item->unguard();
$item->update(Request::input('item'));
$item->save();
return ['message' => "order item {$orderItemId} updated"];
}