我想覆盖类Mage_Adminhtml_Catalog_CategoryController（在Magento后台的类别控制器）。我认为我的config.xml是错误的地方，我怀疑是<to>标签的问题。当我试图访问http://mywebsite/index.php/admin_k/catalog_category/index/key/somerandomkey/，我有一个404错误。
我的config.xml：

<?xml version="1.0"?>
<config>
  <modules>
    <Cheek_Lookbook>
      <version>0.0.1</version>
    </Cheek_Lookbook>
  </modules>
  <global>
        <rewrite>        
            <cheek_lookbook_adminhtml_catalog_categorycontroller>
                <from><![CDATA[#^/admin_k/catalog_category/#]]></from> 
                <to>/admin_k/lookbook/adminhtml_catalog_category/</to>
            </cheek_lookbook_adminhtml_catalog_categorycontroller>
        </rewrite>
    <helpers>
      <lookbook>
        <class>Cheek_Lookbook_Helper</class>
      </lookbook>
    </helpers>
        <blocks>
            <lookbook>
                <class>Cheek_Lookbook_Block</class>
            </lookbook>
            <adminhtml>
                <rewrite>
                    <catalog_category_tab_product>Cheek_Lookbook_Block_Adminhtml_Catalog_Category_Tab_Product</catalog_category_tab_product>
                </rewrite>
            </adminhtml>
        </blocks>
        <resources>
            <lookbook_setup>
                <setup>
                    <module>Cheek_Lookbook</module>
                </setup>
                <connection>
                    <use>core_setup</use>
                </connection>
            </lookbook_setup>
            <lookbook_write>
                <connection>
                    <use>core_write</use>
                </connection>
            </lookbook_write>
            <lookbook_read>
                <connection>
                    <use>core_read</use>
                </connection>
            </lookbook_read>
        </resources>
  </global>
    <admin>
        <routers>
            <lookbook>
                <use>admin</use>
                <args>
                    <module>Cheek_Lookbook</module>
                    <frontName>admin_lookbook</frontName>
                </args>
            </lookbook>
        </routers>
  </admin>
</config>

我已经尝试了很多方法（在URL中的/admin_k后添加/lookbook/，调整<to>中的值...），但我不知道哪里出了问题。
下面是我的控制器类：

<?php
require_once "Mage/Adminhtml/controllers/Catalog/CategoryController.php";  
class Cheek_Lookbook_Adminhtml_Catalog_CategoryController extends Mage_Adminhtml_Catalog_CategoryController {

    public function postDispatch()
    {
        parent::postDispatch();
        Mage::dispatchEvent('controller_action_postdispatch_adminhtml', array('controller_action' => $this));
    }

    public function indexAction() 
    {
        Mage::log('There we aren't', null, 'someRandomLogs.log');
        parent::indexAction();
    }
}

有谁有主意吗？