ajouter la case à cocher Newsletter dans le formulaire de facturation

Je voudrais ajouter la newsletter de la case à cocher dans le formulaire de facturation lorsque l'utilisateur choisit de s'inscrire directement dans le processus de paiement. Comment puis-je faire cela?

salut vous pouvez l'ajouter en ajoutant le code ci-dessous sur billing.phtml

 <input type="checkbox" name="is_subscribed" 
  title="<?php echo $this->__('Sign Up for Newsletter') ?>" value="1"  checked="checked" class="checkbox" />

en utilisant l'événement checkout_submit_all_afterabonner le client à la newsletter

  <global>
 <events>
    <checkout_submit_all_after> <!-- identifier of the event we want to catch -->
        <observers>
          <checkout_submit_all_after_handler> <!-- identifier of the event handler -->
            <type>singleton</type> <!-- class method call type; valid are model, object and singleton -->
            <class>magento52274/observer</class> <!-- observers class alias -->
            <method>AssignNewletter</method>  <!-- observer's method to be called -->
            <args></args> <!-- additional arguments passed to observer -->
          </checkout_submit_all_after_handler>
        </observers>
      </checkout_submit_all_after>
    </events>
  </global>

Et le code Observer est:

   public function AssignNewletter($observer) {
            $event = $observer->getEvent();
            $order = $event->getOrder();
        $Quote =$event->getQuote();
        if (in_array($Quote()->getCheckoutMethod(), array('register','customer'))):

        if (Mage::app()->getFrontController()->getRequest()->getParam('is_subscribed')){
        $status = Mage::getModel('newsletter/subscriber')->subscribe($Quote->getBillingAddress()->getCustomerEmail());
        }
        endif;
   }

Module complet:

Étape 1: créez config.xml sur app/code/local/Stackexchange/Magento52274/etc/et le code est

<?xml version="1.0"?>
<config>
  <modules>
    <Stackexchange_Magento52274>
      <version>1.0.0</version>
    </Stackexchange_Magento52274>
  </modules>
  <global>
    <models>
      <magento52274>
        <class>Stackexchange_Magento52274_Model</class>
      </magento52274>
    </models>
    <events>
      <checkout_submit_all_after> <!-- identifier of the event we want to catch -->
        <observers>
          <checkout_submit_all_after_handler> <!-- identifier of the event handler -->
            <type>singleton</type> <!-- class method call type; valid are model, object and singleton -->
            <class>magento52274/observer</class> <!-- observers class alias -->
            <method>AssignNewletter</method>  <!-- observer's method to be called -->
          </checkout_submit_all_after_handler>
        </observers>
      </checkout_submit_all_after>
    </events>
  </global>
</config> 

Étape 2: créer Observer.phpà app/code/local/Stackexchange/Magento52274/Model/et le code est

<?php
class Stackexchange_Magento52274_Model_Observer
{

    public function AssignNewletter(Varien_Event_Observer $observer)
    {
    $event = $observer->getEvent();
            $order = $event->getOrder();
        $Quote =$event->getQuote();
        if (in_array($Quote()->getCheckoutMethod(), array('register','customer'))):

            if Mage::app()->getFrontController()->getParam('is_subscribed', false)){
        $status = Mage::getModel('newsletter/subscriber')->subscribe($Quote->getBillingAddress()->getEmail());
         }
        endif;
    }

}

Étape3: créer le module app/etc/modules/Stackexchange_Magento52274.xmlet le code est

<?xml version="1.0"?>
<config>
  <modules>
    <Stackexchange_Magento52274>
      <active>true</active>
      <codePool>local</codePool>
      <version>1.0.0</version>
    </Stackexchange_Magento52274>
  </modules>
</config>

Étape4: Et également besoin d'ajouter un champ de newsletter à billing.phtmlun

<input type="checkbox" name="is_subscribed" 
  title="<?php echo $this->__('Sign Up for Newsletter') ?>" value="1"  checked="checked" class="checkbox" />