Paginate - items per page

Submit your form as a GET request so that the selected perPage value is appended to the query string. Make sure you have a name attribute on the <select> element.

<form class="form-inline" method="GET" role="form">
            <div class="form-group">
                            <label for="perPage">Example select:  </label>
                            <select class="form-control" id="perPage" name="perPage">
                                <option>5</option>
                                <option>10</option>
                                <option>15</option>
                                <option>20</option>
                                <option>25</option>
                            </select>
           </div>
</form>

ok I got it, but still not working

That's because you are explicitly setting the $perPage value in the controller. You should optionally take the request value or the default:

$perPage = request('perPage', 2); // 2 is the default if there is no perPage in the request

I added request, but it is still not working. Hmm

echo $perPage return result as number 2.

Does your URL have a query string ?perPage=15 (or whatever you selected from dropdown?

missing form action ?

dd($request->all()) see the perPage ?

dd($perPage->all());

error: Call to a member function all() on integer

what should be in form action??

oh wait, the <form> code is inside tasks/list.blade.php ?

<form class="form-inline" method="GET" action="{{ route('type you route here') }}" role="form">
            <div class="form-group">
                            <label for="perPage">Example select:  </label>
                            <select class="form-control" id="perPage" name="perPage">

                                <!-- all option missing value="" -->
                                <!-- example -->
                                <option value="5">5</option>
                                <option value="10">10</option>
                                <option value="15">15</option>
                                <option value="20">20</option>
                                <option value="25">25</option>
                            </select>
           </div>
</form>

after modifyed the form, check all the variable is passed to your index

public function index(Request $request, TaskRepository $taskRepo)
{
    dd($request->all);

Why are you calling all() on $perPage?

The form should make a GET request to the same URL; all it is doing is adding a query string with the number of items your paginator should display on each page:

<form class="form-inline" method="GET" action="{{url()->current()}}">
    <div class="form-group">
        <label for="perPage">Example select:  </label>
        <select class="form-control" id="perPage" name="perPage">
            <option>5</option>
            <option>10</option>
            <option>15</option>
            <option>20</option>
            <option>25</option>
        </select>
    </div>
</form>

In the controller:

public function index(TaskRepository $taskRepo)
{
    if(Auth::user()->type != 'admin'){
        return redirect()->route('login');
    }

        $perPage = request('perPage', 2);

    if(request()->has('status')) {
        $tasks = DB::table('tasks')
            ->where('status', request('status'))
            ->orderBy('id','asc')
            ->paginate($perPage)
            ->appends('status', request('status'));

    } else {
        $tasks = DB::table('tasks')->orderBy('id','asc')->paginate($perPage);
    }
    //$tasks = $taskRepo->getAll();
    return view('tasks.list', ["taskList" => $tasks]);
    }