Override admin controller in Magento

Step 1

Create a new module under your local folder, in our case under \app\local\Scommerce\Catalog. Now create config.xml with the following -:

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Scommerce_HelloWorld>
            <version>0.0.1</version>
        </Scommerce_Catalog>
    </modules>
    <admin>
        <routers>
            <adminhtml><!--This should be same as defined in Mage_Adminhtml config.xml-->
                <args>
                    <modules>
                        <Scommerce_HelloWorld before="Mage_Adminhtml">
                            Scommerce_HelloWorld
                        </Scommerce_HelloWorld>
                    </modules>
                </args>
            </adminhtml>
        </routers>
    </admin>
</config>

N.B. – Your controller front name should be same as Mage_Adminhtml

Step 2

Create controller Class under local\Scommerce\HelloWorld\controllers\Catalog\ProductController.php

<?php require_once Mage::getModuleDir('controllers', 'Mage_Adminhtml').DS.'Catalog'.DS.'ProductController.php';

class Scommerce_HelloWorld_Catalog_ProductController
            extends Mage_Adminhtml_Catalog_ProductController
{
    public function editAction()
    {
        //your code will go here
    }
}

Step 3

This is the most important step of all!

Create your module file in \etc\modules\Scommerce_HelloWorld.xml

<Scommerce_HelloWorld>
    <active>true</active>
    <codePool>local</codePool>
</Scommerce_HelloWorld>

That’s it, it is as simple as that. Hope this article helped you in some way. Please leave us your comment and let us know what do you think? Thanks.