id (ai)

id (ai)
owner = user.id

id (ai)
owner_id = bulletins.owner
bulletin_id = bulletins.id // this I can't get user ID - don't know how.

public function bulletin()
{
    return $this->belongsTo('AppBulletins','bulletin_id');
}

public function users()
{
    return $this->belongsTo('AppUser','owner_id');
}

owner_id = user.id and bulletin_id->owner = user.id