Codeigniter 4 在放入构造函数时不声明模型

Codeigniter 4 doesnt declare models when put inside constructor

当我只想声明一次模型时遇到问题,我是这样的

  <?php

namespace App\Controllers;

use App\Models\KomikModel;

class Komik extends BaseController
{
    protected $komikModel;
    public function __construct()
    {
        $this->$komikModel = new KomikModel();
    }

    public function index()
    {
        $komik = $this->komikModel->findAll();
        $data = [
            'title' => 'Daftar Komik',
            'komik' => $komik,
        ];

        return view('komik/index', $data);
    }

}

但是它在第 12 行出现错误说未定义变量 $komikModel 就是这个

public function __construct()
{
    $this->$komikModel = new KomikModel();
}

我该如何解决这个问题?或者你可以建议比这个更好的做法。

改变

$this->$komikModel = new KomikModel(); 

$this->komikModel = new KomikModel();