respect-validation/docs/rules/PropertyOptional.md

PropertyOptional

• PropertyOptional(string $propertyName, Rule $rule)

Validates an object property against a given rule only if the property exists.

$object = new stdClass;
$object->name = 'The Respect Panda';
$object->email = 'therespectpanda@gmail.com';

v::propertyOptional('name', v::notEmpty())->isValid($object); // true
v::propertyOptional('email', v::email())->isValid($object); // true

v::propertyOptional('age', v::intVal())->isValid($object); // true
v::propertyOptional('website', v::url())->isValid($object); // true

v::propertyOptional('name', v::lowercase())->isValid($object); // false

The name of this validator is automatically set to the property name.

v::propertyOptional('email', v::endsWith('@example.com'))->assert($object);
// message: email must end with "@example.com"

Note

This rule will validate public, private, protected, uninitialised, and static properties. However, it will pass for anything that is not an object because it will always pass when it doesn't find a property in the input. If you want to ensure the input is an object, use ObjectType with it.

v::propertyOptional('name', v::notEmpty())->isValid('Not an object'); // true
v::objectType()->propertyOptional('name', v::notEmpty())->isValid('Not an object'); // false

• To only validate if a property exists, use PropertyExists instead.
• To validate a property against a given rule requiring the property to exist, use Property instead.

Templates

Template placeholders

Placeholder	Description
name	The validated input or the custom validator name (if specified).

Categorization

• Nesting
• Objects
• Structures

Changelog

Version	Description
3.0.0	Created from Property

---

See also:

• Attributes
• Key
• KeyExists
• KeyOptional
• ObjectType
• Property
• PropertyExists