How to change store theme dynamically

Question

I am new to Magento. But i got a requirement. Below is the requirement:

1. On the Frontend, user is having an option to select the theme from a given list of themes (Drop Down).
2. Upon selecting a theme, the selected theme should be applied to the store dynamically.

Please help me with an example, how to implement this feature.

Answer 1

you can set theme like that on front-end..

Mage::getDesign()->setArea('frontend') //Area (frontend|adminhtml)
    ->setPackageName('default') //Name of Package
    ->setTheme('modern');

Answer 2

In order to fulfill,your require,

• Need to create a custom controller
• On dropdown changes,it will hit this controller's an action.
• On this action,the selected theme will be selected and back you last page

If you want apply a theme to custom frontend ui then try this:

Mage::getSingleton('core/design_package') ->setPackageName($package) ->setTheme($theme);

This concept is like currency change.

controller code seems to like :

<?php
class Amit_Custommodule_IndexController extends Mage_Core_Controller_Front_Action{
public function indexAction(){
  $package=$this->getRequest()->getParam('package');
  $theme=$this->getRequest()->getParam('theme');

                Mage::getSingleton('core/design_package')
                    ->setPackageName($package)
                    ->setTheme($theme);
      // this code is redirec to you last page/same page
       $this->_redirectUrl($this->_getRefererUrl());          
  }
}