Overriding A Controller
<config>
<frontend>
<routers>
<checkout>
<args>
<modules>
<your_module before="Mage_Checkout">Your_Module_Checkout</your_module>
</modules>
</args>
</checkout>
</routers>
</frontend>
</config>
Sandbox Script
Sometimes you want to run some code to see what it does, dump an object out or check a class but the thing you want to run/dump/check is hidden deep in the bowels of the code somewhere, and you feel it might be easier to run a bit of PHP to check just that one thing, without having to fire up or your browser, or wait for cron to run - that’s where this sandbox script comes in.
To use either of the examples below, save them into a file in the root of your magento install calledsandbox.php, then either browse to the directory and run php -f sandbox.php or visithttp://your.dev.site/sandbox.php
To run the default store:
<?php
require 'app/Mage.php';
Mage::app();
// your code
To act as cron:
<?php
require 'app/Mage.php';
$_SERVER['SCRIPT_NAME'] = str_replace(basename(__FILE__), 'index.php', $_SERVER['SCRIPT_NAME']);
$_SERVER['SCRIPT_FILENAME'] = str_replace(basename(__FILE__), 'index.php', $_SERVER['SCRIPT_FILENAME']);
Mage::app('admin')->setUseSessionInUrl(false);
Mage::getConfig()->init()->loadEventObservers('crontab');
Mage::app()->addEventArea('crontab');
// your code
Config Transactional Email Template Definition
<config>
<global>
<template>
<email>
<your_module_email_something_template translate="label" module="namespace_module">
<label>Something</label>
<file>namespace/module/something.html</file>
<type>html</type>
</your_module_email_something_template>
</email>
</template>
</global>
</config>
Block Caching
To cache a block individually, add this method to the blocks class:
protected function _construct()
{
$this->addData(array(
'cache_lifetime' => 3600,
'cache_tags' => array(Mage_Cms_Model_Block::CACHE_TAG),
'cache_key' => 'CACHE_KEY',
));
}
Note - if you set cache_lifetime to 0 (or any other value which PHP evaluates to false) then the cache will actually last 7200 seconds (2 hours), so in order to have a very high cache time then the cache_lifetime should be set to anything up to 9999999999 (about 317 years)
Category Product Collection
This snippet provides a collection of products within a category
$cat = Mage::getModel('catalog/category')->load(1);
$coll = Mage::getResourceModel('catalog/product_collection');
$coll->addCategoryFilter($cat);
Config Redis Cache Definition
<config>
<global>
<cache>
<backend>Cm_Cache_Backend_Redis</backend>
<backend_options>
<server>localhost</server> <!-- or absolute path to unix socket for better performance -->
<port>6379</port>
<database>0</database>
<force_standalone>0</force_standalone> <!-- 0 for phpredis, 1 for standalone PHP -->
<automatic_cleaning_factor>0</automatic_cleaning_factor> <!-- Disabled by default -->
<compress_data>1</compress_data> <!-- 0-9 for compression level, recommended: 0 or 1 -->
<compress_tags>1</compress_tags> <!-- 0-9 for compression level, recommended: 0 or 1 -->
<compress_threshold>20480</compress_threshold> <!-- Strings below this size will not be compressed -->
<compression_lib>gzip</compression_lib> <!-- Supports gzip, lzf and snappy -->
</backend_options>
</cache>
<full_page_cache>
<backend>Cm_Cache_Backend_Redis</backend>
<backend_options>
<server>localhost</server> <!-- or absolute path to unix socket for better performance -->
<port>6379</port>
<database>1</database>
<force_standalone>0</force_standalone> <!-- 0 for phpredis, 1 for standalone PHP -->
<automatic_cleaning_factor>0</automatic_cleaning_factor> <!-- Disabled by default -->
<compress_data>1</compress_data> <!-- 0-9 for compression level, recommended: 0 or 1 -->
<compress_tags>1</compress_tags> <!-- 0-9 for compression level, recommended: 0 or 1 -->
<compress_threshold>20480</compress_threshold> <!-- Strings below this size will not be compressed -->
<compression_lib>gzip</compression_lib> <!-- Supports gzip, lzf and snappy -->
</backend_options>
</full_page_cache>
</global>
</config>
Config Two-Level Memcached & DB Definition
<config>
<global>
<cache>
<backend>memcached</backend>
<slow_backend>database</slow_backend>
<id_prefix>cache_</id_prefix>
<memcached>
<servers>
<server1>
<host><![CDATA[localhost]]></host>
<port><![CDATA[11211]]></port>
<persistent><![CDATA[0]]></persistent>
<weight><![CDATA[1]]></weight>
<timeout><![CDATA[60]]></timeout>
<retry_interval><![CDATA[10]]></retry_interval>
</server1>
</servers>
<compression><![CDATA[0]]></compression>
<cache_dir><![CDATA[]]></cache_dir>
<hashed_directory_level><![CDATA[]]></hashed_directory_level>
<hashed_directory_umask><![CDATA[]]></hashed_directory_umask>
<file_name_prefix><![CDATA[]]></file_name_prefix>
</memcached>
</cache>
<full_page_cache>
<backend>memcached</backend>
<slow_backend>database</slow_backend>
<id_prefix>fullpagecache_</id_prefix>
<memcached>
<servers>
<server1>
<host><![CDATA[localhost]]></host>
<port><![CDATA[11211]]></port>
<persistent><![CDATA[0]]></persistent>
<weight><![CDATA[1]]></weight>
<timeout><![CDATA[60]]></timeout>
<retry_interval><![CDATA[10]]></retry_interval>
</server1>
</servers>
<compression><![CDATA[0]]></compression>
<cache_dir><![CDATA[]]></cache_dir>
<hashed_directory_level><![CDATA[]]></hashed_directory_level>
<hashed_directory_umask><![CDATA[]]></hashed_directory_umask>
<file_name_prefix><![CDATA[]]></file_name_prefix>
</memcached>
</full_page_cache>
</global>
</config>
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