根据xml文件来实现页面导航和菜单的生成

根据实际需求，不同部门的员工应该显示属于各自部门的导航和相应的菜单。这只是属于权限管理的一部分。

我打算根据xml配置文件来为应用生成系统的导航和相应的左栏菜单，我在config目录下面放置如下的xml配置文件,menus.xml

<?xml version="1.0" encoding="UTF-8"?>

<root>
  <dept id='0' name='Service Department'>
    <nav href="/service/users/search" name="Customer Manage" >
      <item href="/service/users/search" name="Custoer Search">
        <subitem href="/service/users/search" name="Search"></subitem>
        <subitem href="/service/users/search?type=advance" name="Advance Search"></subitem>
      </item>
      <item href="/service/users/new" name="Add a New Customer"></item>
      <item href="/service/users/report" name="User Data Report"></item>
    </nav>

    <nav href="/business/orders/search" name="Order Manage" >
      <item href="/business/orders/search" name="Order Search"></item>
      <item href="/business/orders/not_paid" name="Not paid Orders"></item>
    </nav>

  </dept>


  <dept id='1' name='Business Department'>
    <nav href="/service/users/search" name="Customer Manage" >
      <item href="/service/users/search" name="Custoer Search">
        <subitem href="/service/users/search" name="Search"></subitem>
        <subitem href="/service/users/search?type=advance" name="Advance Search"></subitem>
      </item>
      <item href="/service/users/new" name="Add a New Customer"></item>
      <item href="/service/users/report" name="User Data Report"></item>
    </nav>

    <nav href="/business/orders/search" name="Order Manage" >
      <item href="/business/orders/search" name="Order Search"></item>
      <item href="/business/orders/not_paid" name="Not paid Orders"></item>
      <item href="/business/orders/paid" name="Paid Orders"></item>
    </nav>
  </dept>

</root>

这是大概的页面效果：


用户在登录后，current_admin表示当前用户，当前登录用户有一个dept属性用来说明他是哪一个部门的，从而显示哪一个部门的导航和菜单。


而我现在不知道rails中是否自带了xml的解决方案，还是我要我自己使用相关的lib,我目前用分配rexml,不知道性能什么的，有没有影响。