magento - 改寫tag/product controller

 magento的最新版本已經是1.6了.當然相對於1.5來說在性能上沒有太多的改進,不過修正了不少BUG.同時也添加了不少新的模塊,如果擔心性能,沒用的模塊可以關閉掉.歸入正題.

近日,發現google收錄了不少magento網站的站內搜索結果頁.類似

catalogsearch/result/index/?q=  站內搜索頁面

tag/product/list/tagId/1/  標籤產品列表頁

 

這樣的頁面是用戶行爲產生的,對搜索引擎來講,一來表明這個站有更新,二來它是用戶數據,應該說是比較有一定質量的吧.但是在社區的版本中,這兩類用戶數據產生的頁面除了有設置標題之外,沒有設置meta_keyword,meta_description,這樣在google看來,站內存在了具有重複的頁面.而且URL也顯得不是那麼友好.如何改進呢.標題和meta_description好辦.當然不能直接修改代碼.只要把需要修改的block複製到local code pool修改就可以.但是修改url時,要修改magento的tag模塊的product controller類.比如

 

要把tag/product/list/tagId/1/  修改成

tag/product/list/tagName/black/這樣的格式的話

如何override magento的tag模塊下的product 這個controller呢?

step 1: 創建如下目錄結構

 

step 2: 創建模塊的config.xml文件,

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Company_Tag>
            <version>0.1.0</version>
        </Company_Tag>
    </modules>
    <frontend>
        <routers>
            <tag>
                <args>
                    <modules>
                        <Company_Tag before="Mage_Tag">Company_Tag</Company_Tag>
                    </modules>
                </args>
            </tag>
        </routers>
    </frontend>
</config>

Step 3,  向magento註冊新模塊,在app/etc/modules/上下創建Company_All.xml文件(注,文件名不限,不過爲了區別和可讀性,請按一定規則)

 

<?xml version="1.0"?>
<config>
    <modules>
        <Company_Tag>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Mage_Tag/>
            </depends>
        </Company_Tag>
    </modules>
</config>

Step 4, 清空緩存看是否在magento後臺有看到註冊的新模塊

Step 5, 確認一切正常後,開始進入到關鍵的代碼階段了,複製一下原來的magento tag模塊的ProductController類的代碼文件到新建模塊對應的目錄下:

即: Mage/Tag/controllers/ProductController.php ----> Company/Tag/controllers/ProductController.php 並做相應修改,代碼如下:

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to [email protected] so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Tag
 * @copyright   Copyright (c) 2011 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Tagged products controller
 *
 * @category   Mage
 * @package    Mage_Tag
 * @author      Xinhao Zheng <[email protected]>
 */
require_once 'Mage/Tag/controllers/ProductController.php';
class Company_Tag_ProductController extends Mage_Tag_ProductController
{
    public function listAction()
    {
        $tagId = $this->getRequest()->getParam('tagId');
        if (!empty($tagId)) {
            $tag = Mage::getModel('tag/tag')->load($tagId);
        } else {
	        $tagName = $this->getRequest()->getParam('tagName');
	        $tag = Mage::getModel('tag/tag')->loadByName($tagName)->load();
        }
        if(!$tag->getId() || !$tag->isAvailableInStore()) {
            $this->_forward('404');
            return;
        }
        Mage::register('current_tag', $tag);

        $this->loadLayout();
        $this->_initLayoutMessages('checkout/session');
        $this->_initLayoutMessages('tag/session');
        $this->renderLayout();
    }
}

Step 6: 這樣controller的修改就算完成了.也是比早期的版本簡單多了.不過這裏的修改只是實現了它可以財時處理tag/product/list/tagId/1/ 和tag/product/list/tagName/black這樣的頁面,還需要修改相應的block,模板文件以及layout來做調整.比較簡單,就不再做複述了.

進一步,應該要實現下面這樣的,應該已經有模塊實現了,不過可以用來做練習:

 

catalogsearch/result/index/?q=keyword&p=N&limit ---> catalogsearch/keyword_pageNumber_limit.html

tag/product/list/tagId/1/  ----> tag/tagname_pageNumber_limit.html