controller

<?php
namespace App\Controllers;

/**
 * by Muhidin Saimin
 * 06/02/2021
 */

use CodeIgniter\Controller;
use App\Models\GradeModel;

class Grade extends Controller
{
    public function index()
    {
        $model = new GradeModel();
        $data['grades'] = $model->orderBy('name', 'ASC')->findAll();
        return view('grades/index', $data);
    }

    public function add()
    {
        helper(['url', 'form']);
        $model = new GradeModel();

        return view('grades/add');
    }

    public function edit($id)
    {
        helper(['url', 'form']);
        $model = new GradeModel();
        $data['grade'] = $model->find($id);

        return view('grades/edit', $data);
    }

    public function delete($id)
    {
        $model = new GradeModel();
        $model->delete($id);
        session()->setFlashdata('status', 'Kelas berhasil terhapus');
        return redirect()->to(base_url('grade'));
    }
}