Magento – Have better Control Over Individual Block Cache
- Digital Engineering
Magento – Have better Control Over Individual Block Cache
Magento provides Block cache in backend but what if we need more granular control over a particular block caching?
For e.g.:-
1. I do not want to cache my catalog page and want to keep HTML block caching enabled.
2. I want to control block cache conditionally.
Solution:-
To disable the block caching we have to comment the code from where magento add the cache data or fetch the cache key of that particular block.Normally Block file has a constructor from where magento add the cache data or has a function to get the block cache key.
Below is the solution for catalog page cache:
To disable the catalog page cache, open
app/code/core/Mage/Catalog/Block/Product/List.php or app/code/local/ Mage/Catalog/Block/Product/List.php (if you have customize the code).
Find getCacheKey() function and comment the code. So your code should be like this
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public function getCacheKey() { // return $this->getRequest()->getRequestUri(); } |
Other way of block caching in Magento is from constructor of the block file. You will find below code for block caching.
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protected function _construct() { $this->addData( array('cache_lifetime'=> false, 'cache_tags'=>array( Mage_Catalog_Model_Category::CACHE_TAG, Mage_Core_Model_Store_Group::CACHE_TAG), )); } |
So just comment this line and that block will not be cache now.
Magento Tips- Aurigait.com
Now to have more granular control on block caching, you have to play around with block caching key.
For e.g.- I Customized the catalog page in one of my project to filter the products according to the gender of the Customer.But when I manually changed the gender to see other gender’s product,It still displayed the current gender’s product due to block caching.So I added gender in the cache key and it solve my problem.
So in my case my solution was
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public function getCacheKey() { $gender=$_SESSION['selected_gender']; if($gender=='men') return $this->getRequest()->getRequestUri()."?gender=men"; elseif($gender=='women') return $this->getRequest()->getRequestUri()."?gender=women"; else return $this->getRequest()->getRequestUri(); } |
In this way you can have better control over individual block caching.