Setup database and models

Create the shop migrations

Run php artisan vendor:publish. Adjust the published migration if required, then run php artisan migrate.

Create the Shop model

// app/Shop.php
<?php

use Esc\Shopify\Models\Shop as ShopBase;

class Shop extends ShopBase {
  protected $table = 'shops';

}

Methods included in the Shop class include the user relation, and login(), and logout(), findByDomain($myshopifyDomain).

The Shop Model automatically deletes it's associated user on deletion.

Add relationships and methods to your user model

// app/User.php
<?php
...

class User ... {
  ...

  public function shop() {
    return $this->hasOne(Esc\Shopify\Models\Shop::class, 'user_id');
  }
}