modelCI4.php

<?php
namespace App\Models;
use CodeIgniter\Model;

/**
 * Class PostModel
 * @package App\Models
 */
class PostModel extends Model
{
    /**
     * @var string
     */
    protected $table = 'posts';

    /**
     * @var array
     */
    protected $allowedFields = ['user_id', 'title', 'body'];

    /**
     * @var bool
     */
    protected $useTimestamps = true;
}