Saving one to one in Laravel

I’m just learning some Laravel 9 and i’m doing a simple one to one relationship on two tables. I’ve created the relationships and the foreign keys which are working fine.

I am trying to create a new Hotel which saves info into the Hotels model and the facilities into the facilities model and are joined by the hotel_id as the foreign key.

I can’t quite get my transaction right, where I have the hotel but need to pick up the id for it to pass and also have it as my foreign key on the facilities table.

 DB::transaction(function () use ($request) {
        $hotel = Hotel::create([
            'name' => $request->input('name'),
            'address' => $request->input('address'),
            'postcode' => $request->input('postcode'),
            'state' => $request->input('state'),
            'star_rating' => $request->input('star_rating'),
        ]);

        $facility = HotelFacility::create([
            'hotel_id' => 39,
            'fitness_centre' => true,
            'bar' => false,
            'bar' => true,
            'parking' => true,
            'free_wifi' => true,
        ]);
        Hotel::find($hotel->id)->facility()->save($facility);
    });

>Solution :

You’re doing a few things you don’t need to here.

1. When you call create(), it persists to the Database, so calling ->save() later is redundant.

2. The last line is completely unnecessary as well.

There’s ways to do this code by using relationship methods:

DB::beginTransaction();
try {
  $hotel = Hotel::create([
    'name' => $request->input('name'),
    'address' => $request->input('address'),
    'postcode' => $request->input('postcode'),
    'state' => $request->input('state'),
    'star_rating' => $request->input('star_rating'),
  ]);

  $hotel->facility()->create([
    'fitness_centre' => true,
    'bar' => false,
    'parking' => true,
    'free_wifi' => true,
  ]);

  DB::commit();
} catch (Exception $ex) {
  DB::rollBack();
}