namespace AppObservers;

class SubjectObserver {

private $shouldUpdateThreads = false;

/**
 * Listen to the ThreadList created event.
 * This events Fire when ThreadList is handled
 * @param AppObserversAppThreadList $threadList
 */
public function created(subject $subject) {

}

/**
 * Listen to the ThreadList saved event.
 * @param AppObserversAppThreadList $threadList
 */
public function saved(subject $subject) {

}

/**
 * Handling subject updated event
 * Used to update the threads and related models
 * @param subject $subject
 */
public function updated(subject $subject) {
    info('After Update Event ' . $this->shouldUpdateThreads);
    if ($this->shouldUpdateThreads) {
        info_plus($subject);
    }
    info('After Update Check');
}

/**
 * Handling subject being updated event
 * Used to check if the teachers data has changed or not
 * @param subject $subject
 */
public function updating(subject $_subject) {

    $subject = subject::find($_subject->id);

    $this->shouldUpdateThreads = ($subject->teacherId != $_subject->teacherId) ? true : false;

    info(($subject->teacherId != $_subject->teacherId));

    info("Thread update ? " . $this->shouldUpdateThreads);
}

public function deleted(subject $subject) {
    info("Subject deleted");
}

}

$subject->getOriginal('teacher_id');

public function updated(subject $subject) {
    info('After Update Event ' . $this->shouldUpdateThreads);
    if ($subject->getOriginal('teacher_id') !== $subject->teacher_id) {
        info_plus($subject);
    }
    info('After Update Check');
}