An aggregate (Article) has an entity (SmsContent) with a property (enabled) that only can change if a condition on the aggregate is met.
e.g.
<?php
//Aggregate
class Article {
/** @var User */
protected $user;
/** @var SmsOutput */
protected sms;
...
public function enableSms() {
if($this->user->hasPermission('sms')) {
throw new PermissionDeniedException('sms');
}
$this->sms->enable();
retutn $this;
}
public function getSms() {
return $this->sms;
}
...
}
//Entity
class SmsOutput {
/** @var boolean */
protected enabled = false;
...
public function enable() {
$this->enable = true;
}
...
}
How should you get the SmsContent entity from the Article without being able to change the enabled property from outside the aggregate?
For example:
$article->getSms()->enable();
How is this handled in DDD?