Don't create models up front

Author: driesvints

database/factories/SubscriptionFactory.php

@@ -4,10 +4,10 @@
 use App\Models\Thread;
 use App\Models\Subscription;
 
-$factory->define(Subscription::class, function (Faker\Generator $faker) {
+$factory->define(Subscription::class, function (Faker\Generator $faker, array $attributes = []) {
     return [
-        'user_id' => factory(User::class)->create()->id(),
-        'subscriptionable_id' => factory(Thread::class)->create()->id(),
+        'user_id' => $attributes['user_id'] ?? factory(User::class)->create()->id(),
+        'subscriptionable_id' => $attributes['subscriptionable_id'] ?? factory(Thread::class)->create()->id(),
         'subscriptionable_type' => Thread::TABLE,
     ];
 });