public function setPermissionsAttribute($permissions)
{
$module = lcfirst($this->attributes['name']);
$roles = array();
//prefix the permission with the module name ex: user.create
foreach ($permissions as $key => $value) {
$roles[] = $module . '.' . $value;
}
$this->attributes['permissions'] = !empty($roles) ? json_encode($roles) : '';
}