Magento Remove the tab in customer edit page

Question

Here I attached the picture showing what I'd like to remove (shopping cart tab in the customer admin page).

Answer 1

Below was tested and worked.

Assume that your custom module is Mynamespace_Mymodule

Override the block app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tabs.php

In order to override add the below XML content in app/code/local/Mynamespace/Mymodule/etc/config.xml

<config>
    ....
    <global>
        <blocks>
            <adminhtml>
                <rewrite>
                    <customer_edit_tabs>Mynamespace_Mymodule_Block_Adminhtml_Customer_Edit_Tabs</customer_edit_tabs>
                </rewrite>
            </adminhtml>
        </blocks>
       .....
</config>

Now create the block app/code/local/Mynamespace/Mymodule/Block/Adminhtml/Customer/Edit/Tabs.php with below content.

<?php
class Mynamespace_Mymodule_Block_Adminhtml_Customer_Edit_Tabs extends Mage_Adminhtml_Block_Customer_Edit_Tabs
{
    public function _beforeToHtml()
    {
        parent::_beforeToHtml();
        $this->removeTab('cart'); // Put the name of the tab which you want to hide
        $this->_updateActiveTab();
        return Mage_Adminhtml_Block_Widget_Tabs::_beforeToHtml();
    }
}

Finally clear the cache.

Answer 2

The default tabs in the customer edit menu are added in the core file

app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tabs.php

To remove the "Shopping Cart" tab, you need to extend Mage_Adminhtml_Block_Customer_Edit_Tabs and override the _beforeToHtml() function without this portion of code:

$this->addTab('cart', array(
    'label'     => Mage::helper('customer')->__('Shopping Cart'),
    'class'     => 'ajax',
    'url'       => $this->getUrl('*/*/carts', array('_current' => true)),
));