mead-blog/app/Observers/CourseArticleObserver.php

<?php

namespace App\Observers;

use App\Models\CourseArticle;

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

class CourseArticleObserver
{
    public function creating(CourseArticle $course_article)
    {
        //
    }

    public function updating(CourseArticle $course_article)
    {
        //
    }
}