在Magento .phtml中检测可启用BLOCK_HTML缓存的主页 [英] Detect home page in Magento .phtml that will work with BLOCK_HTML cache enabled

问题描述

我已经尝试在catalog/navigation/vert_nav.phtml中使用以下两种方法来添加或隐藏特定于主页的内容:

I have tried the following two methods in catalog/navigation/vert_nav.phtml to add or suppress content specific to the home page:

if($this->getUrl('') == $this->getUrl('*/*/*', array('_current'=>true, '_use_rewrite'=>true))):

或

if(
Mage::getSingleton('cms/page')->getIdentifier() == 'home'  &&
Mage::app()->getFrontController()->getRequest()->getRouteName() == 'cms' 
) :

两者都能正常工作，但是，当打开BLOCK_HTML缓存时，它首先会工作，然后过一会儿，主页开始显示仅用于其他页面的内容(在else子句之后，我使用下面的文字).当我关闭BLOCK_HTML时，它的行为符合预期.

Both work fine, however when BLOCK_HTML cache is turned on, it works at first, then after a while the home page starts displaying content that is intended only for other pages (after an else clause I use lower down). When I turn off the BLOCK_HTML, it behaves as expected.

有趣的是，我在page/html/head.phtml(用于特定于首页的javascript/css)和page/html/header.phtml(用于应显示的标题横幅)中使用了相同的代码(第1个)仅显示在首页上)，即使BLOCK_HTML处于启用状态，它们也可以正常工作.

Interestingly I've used the same code (the 1st one) in page/html/head.phtml (for home page specific javascript/css), and in page/html/header.phtml (for a header banner that should only appear on the home page), and these work fine even when BLOCK_HTML is ON.

(Magento 1.4.1.1)

(Magento 1.4.1.1)

推荐答案

以上答案是最佳解决方案.

The above answer is the best solution.

您只需复制app/code/core/Mage/Catalog/Block/Nagivation.php

You could simply copy app/code/core/Mage/Catalog/Block/Nagivation.php

收件人:

app/code/local/Mage/Catalog/Block/Nagivation.php

app/code/local/Mage/Catalog/Block/Nagivation.php

，然后如上所述更改getCacheKeyInfo()方法.

and then change the getCacheKeyInfo() method as described above.

/**
 * Get Key pieces for caching block content
 *
 * @return array
 */
public function getCacheKeyInfo()
{
    $shortCacheId = array(
        'CATALOG_NAVIGATION',
        Mage::app()->getStore()->getId(),
        Mage::getDesign()->getPackageName(),
        Mage::getDesign()->getTheme('template'),
        Mage::getSingleton('customer/session')->getCustomerGroupId(),
        'template' => $this->getTemplate(),
        'name' => $this->getNameInLayout(),
        $this->getCurrenCategoryKey(),
        // Your logic to make home/none home have different cache keys
        Mage::getSingleton('cms/page')->getIdentifier() == 'home' ? '1' : '0'
    );
    $cacheId = $shortCacheId;

    $shortCacheId = array_values($shortCacheId);
    $shortCacheId = implode('|', $shortCacheId);
    $shortCacheId = md5($shortCacheId);

    $cacheId['category_path'] = $this->getCurrenCategoryKey();
    $cacheId['short_cache_id'] = $shortCacheId;

    return $cacheId;
}

这将使主页/非主页页面的缓存键有所不同，后者将缓存两个副本，而不是缓存单个模板副本以供所有页面使用.

This will make the cache key different for homepage / none-homepage pages, which will cache two copies, rather than caching a single template copy for use on all pages.

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