Magento custom admin menu dropdown - magento

Question

I need a little help: I’m developing an admin module, where I create two menus. I want to set the links in the config.xml, but I do not get it. My config.xml is as follows.
<children>
<menuitem1 module="PrecosMargens">
<title>Actualizar Preços Custos</title>
<action>PrecosMargens/example</action>
</menuitem1>
<menuitem2 module="PrecosMargens">
<title>Actualizar Preços vendas</title>
<action>PrecosMargens/example2</action>
</menuitem2>
</children>
But with the MenuItem2 get error 404. Can you help me how to solve this? In the controller file I have just as follows:
class lbonus_PrecosMargens_ExampleController extends Mage_Adminhtml_Controller_Action
{
public function indexAction()
{
// "Fetch" display
$this->loadLayout();
// "Inject" into display
// THe below example will not actualy show anything since the core/template is empty
$this->_addContent($this->getLayout()->createBlock('core/template')
//defino o template
->setTemplate('PrecosMargens/list.phtml'));
// "Output" display
$this->renderLayout();
}
}
I wanted to do is to have two different layouts, one layout to another to link1 and link2

Answer 1

The second action (PrecosMargens/example2) is trying to find a method indexAction() in a separate class lbonus_PrecosMargens_Example2Controller. You need two controllers for the two actions.
You could have one controller instead. Change the actions to PrecosMargens/example/custos and PrecosMargens/example/vendas which cause the matching methods custosAction() and vendasAction() to be used.
Addendum
The action (which becomes part of the URL) is in the form "router/controller/action". The router is matched to your module by the <routers> section of that module's config.xml file.
The controller becomes the class name with "Controller" appended to it, so in this case the "example" becomes your module's "ExampleController".
The action part leads to that class' method with "Action" appended to it. You can see "custos" becomes the custosAction() method.
When one of these parts is missing it defaults to "index", so a default controller is "IndexController" and a default action is "indexAction". If you just used "PrecosMargens" it would be used as if it were "PrecosMargens/index/index".