Website Change Notifications

Page.php

	public function onAfterPublish(&$original) {
        $subSites = Subsite::currentSubsite();
	    if($subSites->ContactEmail) {
    	    $versioned = Versioned::get_version('SiteTree', $this->ID, $this->Version);
    	    $member = Member::get()->byId($versioned->AuthorID);
    	    // Check for changes in page controller 
    	    $mailer = new Email(
    	        "no-reply@documentfoundation.org",
    	        $subSites->ContactEmail,
    	        "The site has just been updated. "
    	    );
    	    $mailer->setTemplate("RevisionEmail");
	        $diffData = new DataDifferencer($original, $this);
	        $mailer->populateTemplate(new ArrayData(array(
	            'Name' => $member->FirstName,
	            'Surname' => $member->Surname,
	            'Title' => $this->getMenuTitle(),
	            'Link' => $this->AbsoluteLink(),
	            'Difference' => $diffData
	        )));
	        $mailer->sendPlain();
	    }
	    return true;
	}

RevisionEmail.ss

Website Change Notification\n\n 
Dear community,\n this email is being sent to inform you that $Name $Surname has just published a new version of $Title. \n\n
The following changes have been made to the page:\n 
<% with $Difference %>
<% loop ChangedFields %>
$Title\n\n $Diff\n\n
<% end_loop %>
<% end_with %>
You can checkout the latest version of the page by visiting $Link. 

<dl class="diff">
<% with Difference %>
<% loop ChangedFields %> 
   <dt>$Title</dt>
   <dd>$Diff</dd>
<% end_loop %> 
<% end_with %> 
</dl>

and using 'Difference' => $diffData
should fit our needs better (no Content field used in many pagetypes)