Laravel Roles without pivot table - php

Question

I am student and i am new with Laravel and i have this UserController which used to assign multi Roles to User (using pivot table user_role) but i want to assign one role to each user (without pivot table) so i added role_id foreign in table user but i dont know what to change in UserController file.
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\User;
use App\Role;
use DB;
use Hash;
class UserController extends Controller
{
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index(Request $request)
{
$data = User::orderBy('id','DESC')->paginate(5);
return view('users.index',compact('data'))
->with('i', ($request->input('page', 1) - 1) * 5);
}
/**
* Show the form for creating a new resource.
*
* #return \Illuminate\Http\Response
*/
public function create()
{
$roles = Role::pluck('display_name','id');
return view('users.create',compact('roles'));
}
/**
* Store a newly created resource in storage.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$this->validate($request, [
'name' => 'required',
'email' => 'required|email|unique:users,email',
'password' => 'required|same:confirm-password',
'roles' => 'required'
]);
$input = $request->all();
$input['password'] = Hash::make($input['password']);
$user = User::create($input);
foreach ($request->input('roles') as $key => $value) {
$user->attachRole($value);
}
return redirect()->route('users.index')
->with('success','User created successfully');
}
/**
* Display the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function show($id)
{
$user = User::find($id);
return view('users.show',compact('user'));
}
/**
* Show the form for editing the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function edit($id)
{
$user = User::find($id);
$roles = Role::pluck('display_name','id');
$userRole = $user->roles->pluck('id','id')->toArray();
return view('users.edit',compact('user','roles','userRole'));
}
/**
* Update the specified resource in storage.
*
* #param \Illuminate\Http\Request $request
* #param int $id
* #return \Illuminate\Http\Response
*/
public function update(Request $request, $id)
{
$this->validate($request, [
'name' => 'required',
'email' => 'required|email|unique:users,email,'.$id,
'password' => 'same:confirm-password',
'roles' => 'required'
]);
$input = $request->all();
if(!empty($input['password'])){
$input['password'] = Hash::make($input['password']);
}else{
$input = array_except($input,array('password'));
}
$user = User::find($id);
$user->update($input);
DB::table('role_user')->where('user_id',$id)->delete();
foreach ($request->input('roles') as $key => $value) {
$user->attachRole($value);
}
return redirect()->route('users.index')
->with('success','User updated successfully');
}
/**
* Remove the specified resource from storage.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function destroy($id)
{
User::find($id)->delete();
return redirect()->route('users.index')
->with('success','User deleted successfully');
}
}
and you can find all the code here:
http://itsolutionstuff.com/post/laravel-52-user-acl-roles-and-permissions-with-middleware-using-entrust-from-scratch-tutorialexample.html
this mean so much to me if you help me and thanks.