// 1. Define models (e.g., Post, Video, Comment)

// app/Models/Comment.php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphTo;

class Comment extends Model
{
    protected $fillable = ['body', 'commentable_id', 'commentable_type'];

    // Define the polymorphic relationship
    public function commentable(): MorphTo
    {
        return $this->morphTo();
    }
}

// app/Models/Post.php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphMany;

class Post extends Model
{
    public function comments(): MorphMany
    {
        return $this->morphMany(Comment::class, 'commentable');
    }
}

// app/Models/Video.php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphMany;

class Video extends Model
{
    public function comments(): MorphMany
    {
        return $this->morphMany(Comment::class, 'commentable');
    }
}

// 2. Usage examples:
$post = App\Models\Post::find(1);
$post->comments()->create(['body' => 'Great post!']);

$video = App\Models\Video::find(5);
$video->comments()->create(['body' => 'Awesome video!']);

// Access the commentable parent from a comment
$comment = App\Models\Comment::find(1);
$parent = $comment->commentable; // Can be a Post or a Video instance
echo get_class($parent); // e.g., "App\\Models\\Post"