Filter Payment & Shipping Method on Checkout Page

To filter Payment Method Options  we can use observer, i assume you have knowledge of Magento module development, anyway let’s begin

1. on config.xml, register an event

2. .....
   <events>
   	  <payment_method_is_active>
               <observers>
                   <paymentfilter_payment_method_is_active>
                       <type>singleton</type>
                       <class>myfilter/observer</class>
                       <method>paymentMethodIsActive</method>
                   </paymentfilter_payment_method_is_active>
               </observers>
           </payment_method_is_active>  
   </events>
   .....
   

3. create observer file app/code/local/MyModule/MyFilter/Model/Observer.php

4. <?php
   class MyModule_MyFilter_Model_Observer {
    
       public function paymentMethodIsActive(Varien_Event_Observer $observer) {
           $event           = $observer->getEvent();
           $method          = $event->getMethodInstance();
           $result          = $event->getResult();
   
           /* remove COD payment */
   
           if($method->getCode() == 'cashondelivery' ){
                   $result->isAvailable = false;
               }else{
                   $result->isAvailable = true;
               }
           }
   
          
       }

    

 

next to filter shipping methods you have to rewirite shipping model file

1. on config.xml file

2. ...
   <global>
       ...
       <models>
           <shipping>
               <rewrite>
                   <shipping>MyModule_MyFilter_Model_Shipping</shipping>
               </rewrite>
           </shipping>
       </models>
       ...
   </global>
   ...

3. create file app/code/local/MyModule/MyFilter/Model/Shipping.php

4. <?php
   class MyModule_MyFilter_Model_Shipping extends Mage_Shipping_Model_Shipping
   {
       public function collectCarrierRates($carrierCode, $request)
       {
           if (!$this->_checkCarrierAvailability($carrierCode, $request)) {
               return $this;
           }
           return parent::collectCarrierRates($carrierCode, $request);
       }
    
       protected function _checkCarrierAvailability($carrierCode, $request = null)
       {
   	/* remove Free shipping */	
   	if($carrierCode == 'freeshipping'){ 
                   return false;
           }
   	
       }