Laravel 9 factory and creating related 1:1 models - laravel

Question

I'd like to use Laravel factories to populate some dummy data in my test environment. I have a Locations model and a LocationDetails model, which have a 1:1 relationship and a record needs to be created in the LocationDetails table whenever a new Location is created.
How can I do this in a factory such that there's exactly 1 LocationDetails record for each Location record.
Here's what I have in my DatabaseSeeder class:
if(env('APP_ENV') === 'local') {
Client::factory()->count(25)->create();
Location::factory()->count(30)->create();
}
My location factory definition:
public function definition()
{
return [
'name' => $this->faker->company,
'client_id' => Client::all()->random()->id,
'location_status_id' => LocationStatus::all()->random()->id,
'address' => $this->faker->streetAddress,
'city' => $this->faker->city,
'state' => $this->faker->StateAbbr,
'zip_code' => $this->faker->numerify('#####'),
'phone' => $this->faker->numerify('###-###-####'),
'email' => $this->faker->safeEmail,
'is_onboarding_completed' => 1,
];
}
It looks like Laravel has an afterCreate() callback for a factory, but I'm just not clear on how to accomplish this.

Answer 1

Does this work
Location::factory()
->has(LocationDetails::factory())
->count(30)
->create();
Or you can have a state defined on the LocationFactory
//LocationFactory
//Assuming location_id is the foreign key on LocationDetails model
public function withLocationDetail()
{
return $this->afterCreating(function (Location $location) {
LocationDetails::factory()->create(['location_id' => $location->id]);
});
}
And then use it like
Location::factory()
->withLocationDetail()
->count(30)
->create();