Searchable select using model's attribute as label

class Pet extends Model {
  // ...
  public function owner(): BelongsTo {
    // This sets the field name in Pet, right? ↓
    return $this->belongsTo(User::class, 'owner_id');
  }
  // ...
}

class User extends Model {
  // ...
  public function pets(): HasMany {
    // This sets the field name in Pet, right? ↓
    return $this->hasMany(Pet::class, 'owner_id');
  }
  // ...
  public function fullName(): Attribute {
    return Attribute::make(
      get: fn () => "{$this->first_name} {$this->last_name}"
    );
  }
  // ...
}

// from PetResource.php
public static function form(Form $form): Form {
  return $form->schema([
    Forms\Components\Select::make('owner_id')
      ->label('Owner')
      ->getSearchResultsUsing(fn ($search): array =>
          User::query()
            ->where('first_name', 'ilike', "%{$search}%")
            ->orWhere('last_name', 'ilike', "%{$search}%")
            ->get()
            ->toArray()
      )
      ->searchable()
      ->getOptionLabelUsing(fn ($value): string => User::query()->find($value->id)?->fullName)
      ->required()
  ]);
}