jandl-taskmanager-app/be/app/Models/Timesheet.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Timesheet extends Model
{
    use HasFactory;

    public $timestamps = true;
    public $guarded = ['id'];

    protected $touches = ['subtask'];

    public function subtask()
    {
        return $this->belongsTo(SubTask::class, 'sub_task_id');
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}