M:n in Laravel 5.4 controllers?

Question

MySQL

Good day to all.
Need support in many to many relationships in laravel.
Next scenario.
There is a network of shops
shops:
id
name
..
there are entrepreneurs:
id
name
..
there is an m:n connection between them, while shops can exist without entrepreneurs and vice versa.
There is a Customer controller

public function locationByCustomer(Customer $customer)
    {
        $customer->shops(); //Shop-Model -> belongsToMany(Customer) 

        return $customer;
    }

question:
How to get a list of stores that !not! involved with entrepreneurs?
those. in SQL directly I would do this:

select id, name from shops where id not in (select shop_id from shop_customer)

I have no experience with Laravel, I'm stupid about trifles. Thanks in advance.

Answer 1

If I understand the question correctly, then:
$shops = Shop::doesntHave('customer')->get();

Answer 2

https://github.com/laravel/framework/issues/3413