magento cutom module to edit product tab

Question

Ok so i built a module now I need to move it so it shows up as a tab in edit product

I tried creating directory

app/code/local/mycompanyname/adminhtml/Catalog/Product

with all the same sub directories and file structure of my original module

and in each of the files change the classes for example

edit.php from

 class <myCompany>_<moduleName>_Block_Adminhtml_<moduleName>_Edit extends Mage_Adminhtml_Block_Widget_Form_Container
 {
 //clip
 }

to

 class <myCompany>_<moduleName>_Block_Adminhtml_Catalog_Product_Edit extends Mage_Adminhtml_Block_Catalog_Product_Widget_Form_Container

but nothing is showing up in my edit product ?? { //clip }

Answer 1

I suspect there are a couple of problems here.

Firstly, CamelCase naming for Namespaces and Modules will often fail silently in Magento. I assume you actually meant that the path is app/code/local/myCompanyname/moduleName/Block/Adminhtml/Catalog/Product? I suggest you recreate your module using all lowercase names.

Secondly, you need to update the layout xml for the adminhtml_catalog_product_edit and adminhtml_catalog_product_new to insert your Block. For a great example of how to do this, look at googleoptimizer.xml in app/design/adminhtml/default/default/layout. Pasting for reference:

<adminhtml_catalog_product_edit>
    <reference name="product_tabs">
        <block type="googleoptimizer/adminhtml_catalog_product_edit_tab_googleoptimizer" name="tab_googleoptimizer" />
        <action method="addTab"><name>googleoptimizer</name><block>tab_googleoptimizer</block></action>
    </reference>

...