File Name for custom helper

Question

I am trying to replace the helper that provides the compare box with the list of products added to it. My helper is going to get the product ids from a cookie instead of from Magentos session.

As I understand things I need to create a file in app/code/local/Mynamespace/Mymodule/Helper/Data.php and put my own class in this file. Is this correct or should I put the file somewhere else or perhaps give it a different name?

Answer 1

you have to add the helper class detail in confif.xml file

...

<global>
    <helpers>
      <[modelname]>
        <class>[NameSpace]_[Modelname]_Helper</class>
      </[modelname]>
    </helpers>
<global>

....

Crete the data.php file in [NameSpace][Modelname]\Helper\Data.php

<?php
class [NameSpace]_[Modelname]_Helper_Data extends Mage_Core_Helper_Abstract
{
}