$skipOnEmpty public property Whether this validation rule should
$when public property A PHP callable whose return value determines
validateAttribute() public method Validates a single attribute
clientValidateAttribute() public method Returns the JavaScript
addError() public method Adds an error about the specified
$attributes public property Attributes to be validated by this
validateValue() protected method Validates a value.
$builtInValidators public static property List of built-in validators
$isEmpty public property A PHP callable that replaces the default
createValidator() public static method Creates a validator
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