tethys/app/Http/Controllers/PeriodeController.php

<?php
namespace App\Http\Controllers;

use App\Http\Requests;
use App\Http\Controllers\Controller;
use App\Periode;
use App\Student;
use App\Http\Requests\PeriodeRequest;
use Illuminate\Http\Request;

class PeriodeController extends Controller
{

    public function __construct()
    {
        $this->middleware('auth');
    }

    public function index()
    {
        $periodes = Periode::get();
        return view('lms.settings.periode.periode', compact('periodes'));
    }

    public function edit($id)
    {
        $periode = Periode::findOrFail($id);
        return view('lms.settings.periode.edit', compact('periode'));
    }

    public function update($id, PeriodeRequest $request)
    {
        $periode = Periode::findOrFail($id);

        $input = $request->all();

        $periode->update($input);

        //process
        $tglSekarang = time();

        $students = Student::get();

        foreach ($students as $student) {
            $dateDiff = $tglSekarang - $student['registered_at'];
            $durasi = floor($dateDiff/(60 * 60 * 24));
            $periodes = Periode::first();
            if ($durasi > $periodes['days']) {
                $student->update(['status' => 0]);
            } else {
                $student->update(['status' => 1]);
            }
        }

        session()->flash('flash_message', 'You have been updated periode!');
        return redirect()->route('settings.periode');
    }
}