mead-blog/app/Observers/CourseSectionObserver.php

<?php

namespace App\Observers;

use App\Models\CourseSection;

// creating, created, updating, updated, saving,
// saved,  deleting, deleted, restoring, restored

class CourseSectionObserver
{
    public function creating(CourseSection $course_section)
    {
        //
    }

    public function updating(CourseSection $course_section)
    {
        //
    }
}