Prompt Title: Laravel Nested Comments.

To display comments in a tree structure like WordPress in Laravel, you can use the Laravel Nested Set package. Here is an example code to get you started:

1. First, install the Nested Set package via Composer:

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composer require kalnoy/nestedset

2. Create a migration for the comments table:

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php artisan make:migration create_comments_table

In the migration file, add the following columns:

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Schema::create('comments', function (Blueprint $table) {
    $table->id();
    $table->text('comment');
    $table->unsignedBigInteger('parent_id')->nullable();
    $table->integer('_lft');
    $table->integer('_rgt');
    $table->timestamps();
});

3. Run the migration:

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php artisan migrate

4. In your Comment model, use the NestedSet trait and define the $fillable array:

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use Kalnoy\Nestedset\NodeTrait;

class Comment extends Model
{
    use NodeTrait;

    protected $fillable = ['comment', 'parent_id'];
}

5. In your controller, retrieve the comments in tree structure:

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use App\Models\Comment;

class CommentController extends Controller
{
    public function index()
    {
        $comments = Comment::whereNull('parent_id')->with('descendants')->get();
        return view('comments.index', compact('comments'));
    }
}

In the above example, we are retrieving all the comments that do not have a parent comment, and loading their descendants.

6. In your view, loop through the comments and display them in a tree structure:

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<ul>
@foreach($comments as $comment)
    <li>
        {{ $comment->comment }}
        @if(!$comment->isLeaf())
            @include('comments.child', ['children' => $comment->descendants])
        @endif
    </li>
@endforeach
</ul>

7. Create a partial view for the child comments:

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<ul>
@foreach($children as $child)
    <li>
        {{ $child->comment }}
        @if(!$child->isLeaf())
            @include('comments.child', ['children' => $child->descendants])
        @endif
    </li>
@endforeach
</ul>

In the above example, we are recursively including the comments.child partial view for each child comment that is not a leaf node.

That's it! You should now be able to display comments in a tree structure in Laravel using the Nested Set package.