How to use customer_logout event in magento?

Question

I wanna use customer_logout event to un-register data from registry.

Can anybody help?

Answer 1

You can use customer_logout event to do that below is sample code write the code in your config.xml

   <events>
   <customer_logout>
        <observers>
            <Namespace_Module_Model_Observer>
                <type>singleton</type>
                <class>Namespace_Module_Model_Observer</class>
                <method>CustomerLogout</method>
            </Namespace_Module_Model_Observer>
        </observers>
    </customer_logout>
   </events>

Answer 2

First you need study about magento event/observer from

• magentoecommerce site
• Inchoo

Here an example :

   <global><!-- here global is define the where are you want to fire event. If we make it frontend then it will fire in frontend
    if Fire admin area then it should be adminhtml

 Value: global/adminhtml/frontend
    -->
        <events>
          <customer_logout> <!-- identifier of the event we want to catch -->
            <observers>
              <customer_logout_handler> <!-- identifier of the event handler -->
                <type>model</type> <!-- class method call type; valid are model, object and singleton -->
                <class>modulename/observer</class> <!-- observers class alias -->
                <method>FireAndfuncyion</method>  <!-- observer's method to be called -->
              </customer_logout_handler>
            </observers>
          </customer_logout>
        </events>
      </global>

when magento is fire an event then it send some parameters to Observer.Using this parameter implement your operation.

Whenever magento fire customer_logout event then it send customer data to Observer.

 Mage::dispatchEvent('customer_logout', array('customer' => $this->getCustomer()) );

thus we can use this data.

On observer you can get this parameters value data

<?php
class ModuleNameSpace_ModuleName_Model_Observer
{

    public function FireAndfuncyion(Varien_Event_Observer $observer)
    {
           // Mage::dispatchEvent('customer_logout', array('customer' => $this->getCustomer()) );
        $customer = $observer->getEvent()->getCustomer();

    }

}