Laravel “Many To Many Polymorphic Relations”

Album.php

<?php

namespace App;

class Album {
  
	/**
	 * Get all of the orders for the book.
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
	 */
	public function orders()
	{
		return $this->morphToMany(Order::class, 'orderable');
	}
}

Book.php

<?php

namespace App;

class Book {
	
	/**
	 * Get all of the orders for the book.
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
	 */
	public function orders()
	{
		return $this->morphToMany(Order::class, 'orderable');
	}
}

Order.php

<?php

namespace App;

class Order {
  
	/**
	 * Get all of the albums that are assigned this order.
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
	 */
	public function albums()
	{
		return $this->morphedByMany(Album::class, 'orderable');
	}
	
	/**
	 * Get all of the books that are assigned this order.
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
	 */
	public function books()
	{
		return $this->morphedByMany(Book::class, 'orderable');
	}
}

Tables.md

books

id	title
1	Example

orders

id	user_id	amount
1	1	100.00

orderables

id	order_id	orderable_id	orderable_type
1	1	1	App\Book

web.php

<?php

Route::get('test', function() {
	$order = \App\Order::findOrFail(1);

	return $order->books;
});