Adding block and template in admin page

Question

I have successfully added an admin controller which extends Mage_Adminhtml_Controller_Action and works, now I am trying to use a block and template.

I expect to see the text "text here", but I don't see any text, I see the Magento admin header/footer with a blank area, at this URL: http://127.0.0.1/magento2/index.php/admin/c2/index/key/f5b1fd39ee6e77040cb4c6fbe7340ffd/ (Obviously, the link is a localhost link, but I've shown it for verification!)

My namespace is NS1

My module is Component Management

Here's my files.

app/code/local/NS1/ComponentManagement/controllers/c2Controller.php
<?php
class NS1_ComponentManagement_c2Controller extends Mage_Adminhtml_Controller_Action
{
 public function indexAction()
 {
 $this->loadLayout();
 $this->renderLayout();
 }
}

--

app/code/local/NS1/ComponentManagement/Block/Adminhtml/MyBlock.php
<?php
class NS1_ComponentManagement_Block_Adminhtml_ComponentManagement extends Mage_Adminhtml_Block_Template
{
 public function methodblock()
 {
 return 'text here';
 }
}

--

app/design/adminhtml/NS1/ComponentManagement/template/company.php
<?php
echo $this->methodblock();

--

app/design/adminhtml/NS1/ComponentManagement/layout/adminhtml.xml
<?xml version="1.0"?>
<layout version="0.1.0">
 <mymodulename_adminhtml_mymodulename_index>
 <reference name="content">
 <block type="NS1_ComponentManagement/adminhtml_componentmanagement" name="NS1.ComponentManagement" template="company.phtml" />
 </reference>
 </mymodulename_adminhtml_mymodulename_index>
</layout>

--

app/code/local/NS1/ComponentManagement/etc/config.xml
<?xml version="1.0" encoding="UTF-8"?>
<config>
 <modules>
 <NS1_ComponentManagement>
 <version>0.0.1</version>
 </NS1_ComponentManagement>
 </modules>
 <frontend>
 <routers>
 <routeurfrontend>
 <use>standard</use>
 <args>
 <module>NS1_ComponentManagement</module>
 <frontName>test</frontName>
 </args>
 </routeurfrontend>
 </routers>
 <layout>
 <updates>
 <ComponentManagement>
 <file>test.xml</file>
 </ComponentManagement>
 </updates>
 </layout>
 </frontend>
 <global>
 <blocks>
 <ComponentManagement>
 <class>NS1_ComponentManagement_Block</class>
 </ComponentManagement>
 </blocks>
 <helpers>
 <ComponentManagement>
 <class>NS1_ComponentManagement_Helper</class>
 </ComponentManagement>
 </helpers>
 </global>
 <admin>
 <routers>
 <adminhtml>
 <args>
 <modules>
 <NS1_ComponentManagement after="Mage_Adminhtml">NS1_ComponentManagement</NS1_ComponentManagement>
 </modules>
 </args>
 </adminhtml>
 </routers>
 </admin>
</config>

--

Answer 1

I think you have two issues here.

Your layout handle seems wrong

I think your handle should be something like adminhtml_componentmanagement_index

But what you can do is add some debug into your controller to find the right handle. The following snippet added to your controller action var_dump all the layout handles on the page so you can validate the correct one.

`$this->getLayout()->getUpdate()->getHandles()`

Need to add the admin layout xml

In your module's config.xml I think you are missing the snippet to add the layout xml files.

<adminhtml>
 <layout>
 <updates>
 <your_module>
 <file>path/to/layout.xml</file>
 </your_module>
 </updates>
 </layout>
</adminhtml>