protected function validator(array $data) {
    return Validator::make($data, [
        'name' => 'required|string|max:255',
        'password' => 'string|min:6|confirmed',
    ]);
}

public function edit(Request $request){
    $this->validator($request->all())->validate();

    $user = User::find(Auth::user()->id);
    $user->name = $request->name;
    if ( !empty($request->password) ){
        $user->password = bcrypt($request->password);
    }
    $user->save();
}