Display Auto-generated Coupon code on success page

Question

I am using Magento Enterprise 1.14.0.1 On the success.phtml I have a php code that automatically generates a coupon code. The code does generate the coupon I see in the Magento admin.However I can not figure out how to display it on the page?

Here is my code that generates the coupon

//Below is code to generate a coupon code and display it in a jquery popup window
$todaysdateis = date('Y-m-d', strtotime('+1 year'));
$generator = Mage::getModel('salesrule/coupon_massgenerator');

$data = array
(
    'max_probability'   => .25,
    'max_attempts'      => 10,
    'uses_per_customer' => 1,
    'uses_per_coupon'   => 1,
    'qty'               => 1, //number of coupons to generate
    'length'            => 14, //length of coupon string
    'to_date'           => "$todaysdateis", //ending date of generated promo
    /**
     * Possible values include:
     * Mage_SalesRule_Helper_Coupon::COUPON_FORMAT_ALPHANUMERIC
     * Mage_SalesRule_Helper_Coupon::COUPON_FORMAT_ALPHABETICAL
     * Mage_SalesRule_Helper_Coupon::COUPON_FORMAT_NUMERIC
     */
    'format'          => Mage_SalesRule_Helper_Coupon::COUPON_FORMAT_ALPHANUMERIC,
    'rule_id'         => 68 //the id of the shopping cart rule you will use as a template
 );

 $generator->validateData($data);
 $generator->setData($data);
 $generator->generatePool();

 //get the generate coupon code
 $salesRule = Mage::getModel('salesrule/rule')->load($data['rule_id']);
 $collection = Mage::getResourceModel('salesrule/coupon_collection')
              ->addRuleToFilter($salesRule)
              ->addGeneratedCouponsFilter();


 $thecode = $generator->getCode();

 echo "Your Code Is $thecode";

//End code to generate a coupon code and display it in a jquery popup window ?>

The goal is I want to eventually display this to the page not send it in an email.

Answer 1

Start by building your own module. This tutorial will explain how.

Now we'll need 3 things. A block class, template file and a layout XML.

The config

app/code/local/[Namespace]/[Module]/etc/config.xml

<?xml version="1.0"?>
<config>
    <modules>
        <[Namespace]_[Module]>
            <version>1.0.0</version>
        </[Namespace]_[Module]>
    </modules>
    <global>
        <blocks>
            <[namespace]_[module]>
                <class>[Namespace]_[Module]_Block</class>
            </[namespace]_[module]>
        </blocks>
    </global>
    <frontend>
        <layout>
            <updates>
                <[namespace]_[module]>
                    <file>ffm_codebin.xml</file>
                </[namespace]_[module]>
            </updates>
        </layout>
    </frontend>
</config>

The block class will contain your code

app/code/local/[Namespace]/[Module]/Block/Coupon.php

Class [Namespace]_[Module]_Block_Coupon extends Mage_Core_Block_Template
{
   public function getVoucherCode() 
   {
      // your code goes here
      // but instead of echo, return it

      return $thecode;
   }
}

Now for the template file displaying the code, this can be quite simpel

app/design/fontend/base/default/template/[namespace]_[module]/coupon.phtml

<?php

$vouchercode = $this->getVoucherCode();
?>

Your voucher code is <?php echo $vouchercode; ?>

And the layout XML file

app/design/fontend/base/default/layout/[namespace]_[module].xml

<?xml version="1.0"?>
<layout version="0.1.0">
   <checkout_onepage_success>
      <reference name="content">
         <block type="[namespace]_[module]/coupon" name="couponcode" template="[namespace]_[module]/coupon.phtml"
      </reference>
   </checkout_onepage_success>
</layout>