How to override/extend controller in Magento 1

Published On: 25 July 2018.By vipin garg.

Digital Engineering
Ecommerce
General

How to override/extend controller in Magento 1

If we want to override controller file in magento 1 then we need to add create custom modules like following:

Create a new module and declare it in “app/etc/modules” by adding a xml file.

app/code/modules/Wd_Wishlist.xml:

<?xml version="1.0"?>
<config>
   <modules>
       <Wd_Wishlist>
           <active>true</active>
           <codePool>local</codePool>
       </Wd_Wishlist>
   </modules>
</config>

<?xml version="1.0"?>

<Wd_Wishlist>

<codePool>local</codePool>

</Wd_Wishlist>

</modules>

</config>

Create folders in app/code/local according to your module and create config.xml in etc folder of your module.

app/code/local/Wd/Wishlist/etc/config.xml:

<?xml version="1.0"?>
<config>
   <modules>
       <Wd_Wishlist>
           <version>0.0.1</version>
       </Wd_Wishlist>
   </modules>

   <frontend>
       <routers>
           <wishlist>
               <args>
                   <modules>
                       <Wd_Wishlist before="Mage_Wishlist">Wd_Wishlist</Wd_Wishlist>
                   </modules>
               </args>
           </wishlist>
       </routers>
   </frontend>
</config>

<?xml version="1.0"?>

<Wd_Wishlist>

</Wd_Wishlist>

</modules>

<args>

<Wd_Wishlist before="Mage_Wishlist">Wd_Wishlist</Wd_Wishlist>

</modules>

</args>

</wishlist>

</routers>

</frontend>

</config>

Create your controller file in “app/code/local/your_module/controllers/”

app/code/local/Wd/Wishlist/controllers/Index.Controller

<?php

require_once(Mage::getModuleDir('controllers','Mage_Wishlist').DS.'IndexController.php'); //your previous controller path

class Wd_Wishlist_IndexController extends Mage_Wishlist_IndexController
{
   Your code..
}