public function edit($content)
    {
        $users = [];
        foreach (User::all() as $user) {
            $users[$user->id] = $user->getName() . ' (#'.$user->id.')';
        }
        $this->_editViewData['customName'] = array_key_exists($content, $users) ? '' : $content;
        $this->_editViewData['selectOptions'] = [0 => '-- Custom User --'] + $users;
        $content = $this->_editViewData['customName'] ? 0 : ($content ?: Auth::user()->id);
        return parent::edit($content);
    }