I need to rewrite app/code/core/Mage/Adminhtml/Model/System/Config/Source/Catalog/ListSort.php
my config.xml :
...
<global>
<models>
<mymodule>
<class>My_Module_Model</class>
</mymodule>
<adminhtml>
<rewrite>
<system_config_source_catalog_listsort>My_Module_Model_Adminhtml_System_Config_Source_Catalog_ListSort</system_config_source_catalog_listsort>
</rewrite>
</adminhtml>
</models>
</global>
...
app/code/local/My/Module/Model/Adminhtml/System/Config/Source/Catalog/ListSort.php
<?php
class My_Module_Model_Adminhtml_System_Config_Source_Catalog_ListSort
extends Mage_Adminhtml_Model_System_Config_Source_Catalog_ListSort
{
public function toOptionArray()
{
var_dump('TEST');
}
}
Also My_Module already rewrite lot of models.
Please help me to find what i'm doing wrong. Thanks