Trying to get property of non-object. Error in laravel - laravel

Question

I'm kinda new at laravel and need your help.
I have this IR model :
class IR extends Model
{
//
protected $fillable=['irnum','date','subject','cause','facts','as','at','rec','user_id'];
protected $casts=['user_id'=>'int'];
public function user()
{
return $this->belongsTo(user::class);
}
public static $rules =array (
'date'=>'required',
'status'=>'required|min:10',
'cause' => 'required|min:10',
'facts' => 'required|min:10',
'ir-as' => 'required|min:10',
'rec' => 'required|min:10',
'ir-at' => 'required|min:10',
);
}
and route:
Route::group(['middleware' => ['web']], function () {
Route::get('/', function () {
return view('welcome');
})->middleware('guest');
Route::resource('tasks','TaskController');
Route::get('ir',function ()
{
return View::make('tasks/ir');
});
Route::resource('irs','IRController');
Route::auth();
});
and this is my controller :
class IRController extends Controller
{
/**
* The task repository instance.
*
* #var TaskRepository
*/
protected $irs;
/**
* Create a new controller instance.
*
* #param TaskRepository $tasks
* #return void
*/
public function __construct(IRRepository $irs)
{
$this->middleware('auth');
$this->irs = $irs;
}
/**
* Display a list of all of the user's task.
*
* #param Request $request
* #return Response
*/
public function index(Request $request)
{
return view('tasks.ir',[
'irs' => $this->irs->forUser($request->user()),
]);
}
/**
* Create a new task.
*
* #param Request $request
* #return Response
*/
public function create()
{
return View::make('irs.create');
}
public function store(Request $request)
{
$request->user_id=Auth::user()->id;
$input =$request->all();
$validation=Validator::make($input, IR::$rules);
if($validation->passes())
{
IR::create($input);
return Redirect::route('tasks.ir');
}
return Redirect::route('tasks.ir')
->withInput()
->withErrors($validation)
->with('message','There were validation errors.');
}
/**
* Destroy the given task.
*
* #param Request $request
* #param Task $task
* #return Response
*/
public function destroy(Request $request, IR $irs)
{
}
}
I really dont know what causes to throw this error.
Error throws when i add Incident report.
Pls help.
New at laravel

Answer 1

You're saying you get an error when you're trying to add an incident report or IR, so I assume problem is in a store() action.
I can see only one potential candidate for this error in a store() action:
Auth::user()->id;
Add dd(Auth::user()); before this clause and if it will output null, use check() method, which checks if any user is authenticated:
if (Auth::check()) {
Auth::user->id;
}