Laravel 5, nested has() on multiple many-to-many query

Models:

• Order
• OrderItem
• Product
• Category

Relationships:

• Order **hasMany** OrderItem (order_items)
• OrderItem **belongsTo** Product (product)
• Product **hasMany** Category (categories)
• Category **belongsToMany** Category (exchangables) via pivot table 'exchangables'

Pivot table exchangable looks like this:

category_id (FK:category.id) | exchangable_category_id (FK:category.id)

I am trying to get Order with only OrderItem(s) that has Product(s) Category(ies) as exchangables (pivot).

Essentially I want only order items that can be exchanged for products from specific categories (in pivot).

yes, that exchangables table is joining on same model Category, M-2-M

I tried this:

$order = \App\Order::where('id', $orderId)
                    ->has('order_items.product.categories.exchangables')
                    ->first();

And I tried this:

$order = \App\Order::where('id', $orderId)
                    ->with(['order_items.product.categories' => function($query) 
                            {
                                $query->has('exchangables');
                            }]
                        )
                    ->first();

And I even tried this:

$order = \App\Order::where('id', $orderId)
                        ->with(['order_items' => function($query) {
                            $query->with(['product', function($query2) {
                                    $query2->with(['categories', function($query3) {
                                        $query3->with('exchangables')->has('exchangables');
                                    }]);
                                }]);
                    ->first();

No luck. It returns everything without regard that some order_items' product categories DO NOT have exchangables.

If question is unclear, I can try explaining it better. My models relationship is properly configured. I've written thousand lines ofcode using combination of all those relationshps, but never nested that deep. I don't want to post pages of model code and consume a lot of space.

via Chebli Mohamed