Undefined variable in view laravel

I have this code here which is listing all items from one user, user and item are two differents model and they have relationship with their primary keys.

@foreach($user->items as $item)
    <p class="heading">
         <a href=""></a>
     </p>
@endforeach

My question is how to send that item_id with post request to controller, because when I write like this for example <form class="form-horizontal" method="post" action="" role="form" enctype="multipart/form-data"> it gives me that $item variable is not defined.

Any ideas how to send that item_id?

via Chebli Mohamed