/**
* @param string $name
* @param mixed $value
* @throws CannotGuessEventException
* @throws EventNotFoundException
* @throws InvalidSchemaException
* @throws TransitionException
* @throws \yii\base\UnknownPropertyException
* @throws exceptions\StateNotFoundException
* @throws null
*/
public function __set($name, $value)
{
if ($name === $this->virtAttr) {
$m = $this->owner;
// Value did not change - ignore
if ($m->{$this->attr} === $value) {
return;
}
// First time? Initialize SM for $value state
if ($m->{$this->attr} === null && $m->getIsNewRecord()) {
if ($value !== $this->sm->getInitialStateValue()) {
throw new InvalidValueException("This attribute is just entering the State Machine and must be set to {$this->sm->getInitialStateValue()}");
}
$context = $this->initStateMachine();
} else {
// Not first time, try to trigger for $value
$state = $this->sm->getState($m->{$this->attr});
if (!$state) {
throw new InvalidSchemaException("Cannot load current state {$m->{$this->attr}}");
}
$event = $state->guessEvent($value, $this->internalGetUserRole(Yii::$app->user->identity));
$context = $this->trigger($event);
}
// Migrate the context errors to the virtual attribute
foreach ($context->errors as $attr => $error) {
$m->addError($this->virtAttr, $error);
}
} else {
parent::__set($name, $value);
}
}
/**
* @return State
* @throws exceptions\InvalidSchemaException
* @throws exceptions\StateNotFoundException
*/
public function getTargetState()
{
return $this->sm->getState($this->target);
}
/**
* @return interfaces\StateMachineEvent[]
*/
public function getPossibleEvents()
{
return $this->sm->getState($this->model->{$this->attr})->getEvents($this->role, $this);
}
