How to use getUrl() in Magento to refer to another module? - magento

Question

My module in Magento adminpanel has URL like as http://example.com/index.php/mymodule/... and contains custom grid with the orders. I want to redirect user to the standard "Order view" page when he clicks on a grid row.
public function getRowUrl($row)
{
if (Mage::getSingleton('admin/session')->isAllowed('sales/order/actions/view')) {
return $this->getUrl('sales_order/view', array('order_id' => $row->getId()));
}
return false;
}
But this URL points to http://example.com/index.php/sales_order/view/... instead of http://example.com/index.php/admin/sales_order/view/... Any suggestion?
UPD. config.xml:
<admin>
<routers>
<mymodule>
<use>admin</use>
<args>
<module>Foo_Mymodule</module>
<frontName>mymodule</frontName>
</args>
</mymodule>
</routers>
</admin>

Answer 1

Quite simply you need to replace sales_order/view with */sales_order/view. The * means use the current router which in the admin is adminhtml.
Edit
To explain in more detail put this in your config,
<admin>
<routers>
<adminhtml>
<args>
<modules>
<mymodule after="Mage_Adminhtml">Foo_Mymodule_Adminhtml</mymodule>
</modules>
</args>
</adminhtml>
</routers>
</admin>
Now the value */mymodule/index will generate an URL http://example.com/index.php/admin/mymodule/index which in turn will load the file Foo/Mymodule/controllers/Adminhtml/MymoduleController.php and try to find the method Foo_Mymodule_Adminhtml_MymoduleController::indexAction(). If the method exists it is run, otherwise the admin router takes over and shows a 404 or redirects to the dashboard.