Hidden Properties

Bag supports hiding properties when transforming to an array and/or JSON. This is useful when you want to keep certain properties private, or when you want to hide sensitive information.

Hidden properties are still accessible as object properties (e.g. $bag->hiddenProperty), but they will not be included in the output when transforming to an array and/or JSON.

Hiding Properties

Properties can be hidden by applying the Hidden attribute to the property:

use Bag\Attributes\Hidden;
use Bag\Bag;

class MyValue extends Bag {
    public function __construct(
        #[Hidden]
        public string $hiddenProperty
        public string $visibleProperty
    ) {}
}

In the above example, the hiddenProperty will not be included when calling toArray() or json_encode():

$value = MyValue::from([
    'hiddenProperty' => 'hidden',
    'visibleProperty' => 'visible'
]);

$value->toArray(); // ['visibleProperty' => 'visible']
json_encode($value, JSON_THROW_ON_ERROR); // {"visibleProperty": "visible"}

Additionally, you can use PHP's built-in SensitiveParameter attribute to hide sensitive information:

use Bag\Bag;
use SensitiveParameter;

class MyValue extends Bag {
    public function __construct(
        #[SensitiveParameter]
        public string $password
    ) {}
}

Hiding Properties from JSON

In addition to always hiding properties, you can choose to only hide them when serializing to JSON by using the HiddenFromJson attribute:

use Bag\Attributes\HiddenFromJson;
use Bag\Bag;

class MyValue extends Bag {
    public function __construct(
        #[HiddenFromJson]
        public string $hiddenProperty
        public string $visibleProperty
    ) {}
}

In the above example, the hiddenProperty will be included when calling json_encode(), but not when calling toArray():

$value = MyValue::from([
    'hiddenProperty' => 'hidden',
    'visibleProperty' => 'visible'
]);

$value->toArray(); // ['hiddenProperty' => 'hidden', visibleProperty' => 'visible']
json_encode($value, JSON_THROW_ON_ERROR); // {"visibleProperty": "visible"}