database/factories/EventCategoryFactory.php
<?php
/* @var $factory \Illuminate\Database\Eloquent\Factory */
use DavideCasiraghi\LaravelEventsCalendar\Models\EventCategory;
use Faker\Generator as Faker;
$factory->define(EventCategory::class, function (Faker $faker) {
$event_category_name = $faker->name;
$slug = Str::slug($event_category_name, '-').rand(10000, 100000);
return [
'name:en' => $event_category_name,
'slug:en' => $slug,
];
});