Checkout Observer Modification 1.7+ - magento

Question

this is about me tinkering again to see if this modification works:
I modified the Mage/Checkout/Model/Observer.php:
public function salesQuoteSaveAfter($observer)
{
$quote = $observer->getEvent()->getQuote();
Start of added code --- > $post = Mage::app()->getRequest()->getPost();//Mage::app()->getRequest()->getPost();
if(isset($post['shipping']['email'])){
if(isset($_SESSION['emailadd'])){
unset($_SESSION['emailadd']);
$_SESSION['emailadd'] = 'test2#mail.com';//$post['shipping']['email'];
}else{
$_SESSION['emailadd'] = 'test#mail.com';//$post['shipping']['email'];
}
}else{
if(isset($_SESSION['emailadd'])){
unset($_SESSION['emailadd']);
$_SESSION['emailadd'] = 'test3#mail.com';//$post['shipping']['email'];
}else{
$_SESSION['emailadd'] = 'test4#mail.com';//$post['shipping']['email'];
}
} <--End of added code;
/* #var $quote Mage_Sales_Model_Quote */
if ($quote->getIsCheckoutCart()) {
Mage::getSingleton('checkout/session')->getQuoteId($quote->getId());
}
}
the problem is this code: is returning nothing which sets the session['emailadd'] = test4#mail.com
$post = Mage::app()->getRequest()->getPost();
if my code is in the wrong method, how do I add a salesQuoteSaveBefore() method that is called before sending the data in the database? is there an XML to configure before doing so?
because first what I'm aiming at is just to get the input data or post data from the onepage/checkout inputs specially the shipping[email] input, don't tell me that there is none because there is:
<li>
<div class="input-box">
<label for="shipping:emailadd"><?php echo $this->__('Email Address') ?> <span class="required">*</span></label><br />
<input type="text" name="shipping['email']" id="shipping:emailadd" value="<?php echo $this->htmlEscape($this->getAddress()->getEmail()) ?>" title="<?php echo $this->__('Email Address') ?>" class="validate-email required-entry input-text" />
</div>
<div class="input-box">
<label for="shipping:emailadd"><?php echo $this->__('Confirm Email') ?> <span class="required">*</span></label><br />
<input type="text" name="shipping[emailconfirm]" id="shipping:emailconfirm" value="<?php echo $this->htmlEscape($this->getAddress()->getEmail()) ?>" title="<?php echo $this->__('Email Address') ?>" class="validate-email required-entry input-text" />
</div>
</li>
all I want to get is this one single shipping[email] input, it's kinda buggy because I'm stuck with for so long already. but I can't find a way to get it's value after onepage/checkout is submitted.
Any help would be appreciated.

Answer 1

First thing is you were editing core files. This is not appreciated.
You can get shipping email easily from controllers. Using Event Absorber is good method than over writing files. But that is hard to compare over writing .
Just overwrite the OnepageController.php at core->Mage->checkout->controllers.
Here is the code,
include_once("Mage/Checkout/controllers/OnepageController.php");
class Pakagename_Modulename_OnepageController extends Mage_Checkout_OnepageController
{
public function saveBillingAction()
{
if ($this->_expireAjax()) {
return;
}
if ($this->getRequest()->isPost()) {
// $postData = $this->getRequest()->getPost('billing', array());
// $data = $this->_filterPostData($postData);
$data = $this->getRequest()->getPost('billing', array());
$customerAddressId = $this->getRequest()->getPost('billing_address_id', false);
if (isset($data['email'])) {
$data['email'] = trim($data['email']);
}
Here the problem is customer may use different email for shipping and billing. So you need to checkout both shipping and billing save actions.
add to session
$email = $data['email'];
Mage::getSingleton('core/session')->setMyValue($email);
Then here I assume that you were trying to edit order e-mail template.
1) Edit sendNewOrderEmail() function located in
app/code/core/Mage/Sales/Model/Order.php
$my_email = Mage::getSingleton('core/session')->getMyValue();
$mailer->setTemplateParams(array(
'order' => $this,
'billing' => $this->getBillingAddress(),
'payment_html' => $paymentBlockHtml,
'my_email' => "$my_email" //New custom value
));
Then hereafter you can fetch that email like this
{{ var my_email }}
If you want edit invoice template then you should find out corresponding function to define custom email variable. That's all..!