When you use magento sometime need to customize some admin core functionality based on requirement. If you want to change core functionality of any controller so you need to override controller action with your controller action. Learning how to perform this action may be helpful to those who have computer forensics degrees. how to override magento admin controller action This example to show you override edit action from ProductController.php is located app/code/core/Mage/Adminhtml/controllers/Catalog Step 1: Create new module from app/etc/Justwebdevelopment_Overridecontroller.xml [sourcecode language="plain"] <?xml version="1.0"?> <config> <modules> <Justwebdevelopment_Overridecontroller> <active>true</active> <codePool>local</codePool> </Justwebdevelopment_Overridecontroller> </modules> </config> [/sourcecode] Step 2: Make config.xml from app/code/local/Justwebdevelopment/Overridecontroller/etc/config.xml [sourcecode language="plain"] <?xml version="1.0"?> <config> <modules> <Justwebdevelopment_Overridecontroller> <version>0.0.1</version> </Justwebdevelopment_Overridecontroller> </modules> <admin> <routers> <adminhtml> <args> <modules> <Justwebdevelopment_Overridecontroller before="Mage_Adminhtml">Justwebdevelopment_Overridecontroller</Justwebdevelopment_Overridecontroller> </modules> </args> </adminhtml> </routers> </admin> </config> [/sourcecode] Using above code you want to override any…