I'm trying to add some fields to the $PageComments form. To do this I use the DataObjectDecorator to extend the PageCommentInterface. To start simple I overload the PostCommentForm and alter the field 'Your name' to 'Your - test - name'. Problem is that the 'default' form with 'Your name' is showing. Hopefully someone could give me a clue on what I'm doing wrong here? Thanks!

===mysite/code/CustomCommentInterface.php===

class CustomCommentInterface extends DataObjectDecorator
{

	function forTemplate()
	{
		return $this->renderWith('CustomCommentInterface');
	}
	
	function PostCommentForm() {
		Requirements::javascript('jsparty/behaviour.js');
		Requirements::javascript('jsparty/prototype.js');
		Requirements::javascript('jsparty/scriptaculous/effects.js');
		Requirements::javascript('cms/javascript/PageCommentInterface.js');
		
		
		$fields = new FieldSet(
			new HiddenField("ParentID", "ParentID", $this->page->ID),
			new TextField("Name", _t('CustomCommentInterface.YOURNAME', 'Your - test - name')));	
		
		if(MathSpamProtection::isEnabled()){
			$fields->push(new TextField("Math", sprintf(_t('CustomCommentInterface.SPAMQUESTION', "Spam protection question: %s"), MathSpamProtection::getMathQuestion())));
		}				
		
		$fields->push(new TextareaField("Comment", _t('CustomCommentInterface.YOURCOMMENT', "Comments")));
		
		$form = new PageCommentInterface_Form($this->controller, $this->methodName . ".PostCommentForm",$fields, new FieldSet(
			new FormAction("postcomment", _t('CustomCommentInterface.POST', 'Post'))
		));
		
		$form->loadDataFrom(array(
			"Name" => Cookie::get("CustomCommentInterface_Name"),
		));
		
		return $form;
	}
}


===mysite/_config.php===

Object::add_extension('PageCommentInterface', 'CustomCommentInterface');

Browsing the docs and forum some more but can't seem to find what I'm missing here. Someone? Anyway, thanks for your time!

Hey, I am not sure if this is what you are looking for but I added an email field to page comments although I did it by changing the core so there is prolly way to do it without hacking. The diff file i generated is here http://open.silverstripe.com/attachment/ticket/2576/diff.patch which should give you an idea of what worked.

Good luck