Undefined variable $request - laravel-8

Question

I'm trying to write a clean code in laravel By using trait For uploading img And I Have A Problem In The code
This Is The Controller
I Used this Also So It Can Work in The Controller
namespace App\Http\Controllers\Admin;
use App\Http\Controllers\Controller;
use App\Models\User;
use App\Traits\Uploadimg;
use Illuminate\Http\Request;
use App\Http\Requests\Userstore;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
class UserController extends Controller
{
This Is The Controller
public function store(Userstore $request)
{
$user = new User();
$user->name = $request->input('name');
$user->email = $request->input('email');
$user->password = Hash::make($request->input('password'));
$user->uimg = $request->uimg;
$this ->uimg($request -> uimg , 'uploads/users');
// $file_extension = $request -> uimg -> getclientoriginalExtension();
// $file_name = time ().'.'.$file_extension;
// $path = 'uploads/users';
// $request -> uimg -> move($path,$file_name);
$user->save();
return redirect()->back()->with(['success' => 'User has been added']);
}
This is the Trait File
<?php
namespace App\Traits;
Trait Uploading
{
function uimg(){
if($request->hasFile('uimg')){
$file = $request->file('uimg');
$extension = $file->getClientOriginalExtension();
$filename = time() . '.' . $extension;
$file->move('uploads/users/' , $filename);
$user->uimg = $filename;
}
else{
return $request;
$user->uimg = '';
}
// $file_extension = $request -> uimg -> getclientoriginalExtension();
// $filename = time ().'.'.$file_extension;
// $path = 'uploads/users';
// $request -> uimg -> move($path,$filename);
// return $filename;
}
}
I Want to Add the img to The Database Who Can i Do This