Dynamic content and full page cache

Question

I have dynamic content in my block which is cached so I exclude this block from cache in the easiest way. I've created cache.xml which looks like:

<?xml version="1.0" encoding="UTF-8"?>
<config>
 <placeholders>
 <my_category_view>
 <block>catalog/category_view</block>
 <placeholder>MY_CATEGORY_VIEW</placeholder>
 <container>Custom_Package_Model_Container_Category_View</container>
 <cache_lifetime>86400</cache_lifetime>
 </my_category_view>
 </placeholders>
</config>

and i've created container:

class My_Package_Model_Container_Category_View extends
 My_Page_Model_Container_Abstract
 {
 const PREFIX = 'MY_CATEGORY_VIEW';
 }

and it works great. the block is excluded from FPC, but the problem is that after refreshing the page I've got exception.

Fatal error: Call to a member function getChild() on a non-object

in this line:

$platform_filter=$this->getLayout()->getBlock('enterprisecatalog.leftnav')->getChild('platform_filter');

any idea how to fix that? I've spent 2 days on it and still cannot resolve it.

• camdixon: Good luck, would love to know your solution or anyone else who can help answer.

Answer 1

I resolved this problem this way. I created the observer which exclude category view from FPC. It's not the best way because I needed only to exclude one block from this view but it works...

My observer:

class MyCompany_Catalog_Model_Observer
{
 public function processPreDispatch(Varien_Event_Observer $observer) {
 $action = $observer->getEvent()->getControllerAction();
 if ($action->getFullActionName() === 'catalog_category_view') {
 $cache = Mage::app()->getCacheInstance(); 
 $cache->banUse('full_page');
 }
 }
}