Laravel pivot table crud view information - php

Question

I am creating a laravel application. Now i have to use a Pivot table. but i cant show the information from the other table. The create function works fine.
I just want to show the 'name' row of the 2nd table.
Table 1 (file):
table 2 (subfolder):
pivot table:
Controller:
public function index()
{
$files = File::with('subfolders')->get();
$subfolders = Subfolder::all();
$languages = Language::all();
$tags = Tag::all();
$users = User::all();
$roles = Role::all();
dd($files);
return view('admin.file.index', compact('files', 'subfolders', 'languages', 'tags', 'users', 'roles' ));
}
public function store(Request $request)
{
$request->validate([
'title' => 'required',
'description_short' => '',
'description_long' => '',
'file' => 'mimes:pdf,xlsx,docx,pptx',
]);
if ($request->file) {
//dd($request);
$file = $request->file->getClientOriginalName();
$file_name = $file . '.' . $request->file->extension();
$document = new File([
'title' => $request->get('title'),
'description_short' => $request->get('description_short'),
'description_long' => $request->get('description_long'),
'file' => 'storage/files/' . $file_name,
]);
$request->file->move(public_path('storage/files/'), $file_name);
} else {
$document = new File([
'title' => $request->get('title'),
'description_short' => $request->get('description_short'),
'description_long' => $request->get('description_long'),
'file' => $request->get('file'),
]);
}
$document->save();
$document->subfolders()->attach($request->get('subfolder_id'));
return back();
}
index.blade:
#foreach($files as $file)
<tr>
<td>{{$file->id}}</td>
<td>{{$file->title}} </td>
<td>{{$file->description_short}} </td>
<td>{{$file->description_long}} </td>
<td>{{$file->file}}</td>
<td>{{#$file->subfolder->name}} </td>
<td>
i just need to show information thru the pivot table, but i have no idea how to