Laravel - 在动态表的每一行内附加行id以形成name属性

Question

I send two variable to my view $abilities, and $users. $abilities is an array of key-value pairs containing data in the following format:

["1"=>"create_user","2"=>"delete_user","3"=>"ban_user"]

$users is an array in the following format:

["1"=>"John Doe","2"=>"Jane Doe"]

Both are taken from their respective databases abilities (columns: ID, name) and users (columns: ID, name).

In the view, I have a table which contains a multiple select for each row against the $user->id:

@foreach($users as $user)
<tr>
    <td>{{$user->id}}</td>
    <td>
       {{Form::select("takenabilities[]",$abilities, null, ['id'=>'system-abilities','multiple','class'=>'form-control' ])}}
   </td>
</tr>
@endforeach

Problem is that when I receive the request in my controller, I only see one takenabilities[] array, and I want to save data from each multiple select in each row generated dynamically, if that makes sense?

Answer 1

You can't do that using multiple selects with the same name. The value of the last one overrides all previous selects' values. In addition you'd better assign different id to every select. Try to add another level to the array:

@foreach($users as $user)
<tr>
    <td>{{$user->id}}</td>
    <td>
       {{Form::select("takenabilities[$user->id][]", $abilities, null, ['id'=>'system-abilities-' . $user->id,'multiple','class'=>'form-control' ])}}
   </td>
</tr>
@endforeach

And in controller:

$takenabilities = [];
foreach(Request::input('takenabilities') as $userId => $userAbilities) {
    $takenabilities = array_merge($takenabilities, $userAbilities);
}
$takenabilities = array_unique($takenabilities);