Что такое Accessor и Mutator?

// Laravel 9+ (Attribute casting)
class User extends Model {
    protected function firstName(): Attribute {
        return Attribute::make(
            get: fn(string $value) => ucfirst($value),       // accessor
            set: fn(string $value) => strtolower($value),    // mutator
        );
    }

    // Виртуальный атрибут
    protected function fullName(): Attribute {
        return Attribute::make(
            get: fn() => "{$this->first_name} {$this->last_name}",
        );
    }

    // Casts (встроенные)
    protected $casts = [
        'options' => 'array',
        'birthday' => 'date',
        'is_admin' => 'boolean',
        'status' => StatusEnum::class,
    ];
}