How load phtml of custom module in magento with block on controller

Question

I need to know how to load phtml on custom module...

I need to load phtml file on my blocks...in magento

my code is bellow.....I m creating module for my learning

purpose .....

what is the best way to load phtml in custom block...

And if I have model,controller like other mvc...

then what is the need of block in magento..

my controller
-----------
class Packt_New_IndexController extends Mage_Core_Controller_Front_Action
{
public function indexAction()
{
echo "this is my new controller ";
}
    public function newAction(){

        $this->loadLayout();
        $this->renderLayout();

    }


}

my config.xml
----------------
<?xml version="1.0" encoding="UTF-8" ?>
<config>
    <!-- module configuration -->
    <modules>
        <Packt_New>
            <version>0.0.1</version>
        </Packt_New>
    </modules>
    <!-- module configuration end -->
    <global>
        <blocks>
            <new>
                <class>Packt_New_Block</class>
            </new>
         </blocks>
         <helpers>
            <new>
                <class>Packt_New_Helper</class>
            </new> 
        </helpers>
        <models>
            <new>
                <class>Packt_New_Model </class>
            </new>
        </models>
    </global>
    <frontend>
        <routers>
            <new>
                <use>standard</use>
                <args>
                    <module>Packt_New</module>
                    <frontName>new</frontName>  
                </args>
            </new>
        </routers>
        <layout>
        <updates>
            <new>
                <file>new.xml</file>
            </new>
        </updates>
        </layout>
    </frontend>

</config>


my layout.xml
---------------------
<?xml version="1.0" encoding="UTF-8"?>
<layout>
   <!-- <default>
        <remove name="header"/>
    </default>-->
    <new_index_new>
        <refrence name="root">
            <action method="setTemplate">
                <template>page/2columns-right.phtml</template>
            </action>
        </refrence>
        <refrence name="content">
            <block type="new/newproducts" name="block_newproducts" template="new/new.phtml"></block>
        </refrence>
    </new_index_new>
</layout>

this is my block
-------------------
class Packt_New_Block_Newproducts extends Mage_Core_Block_Template
{



}

Answer 1

You have added the block block_newproducts into content but is this being called somewhere?

In your content phtml you should output the block with

echo $this->getChildHtml('block_newproducts');

Answer 2

If you define a template when you declare your block (as you have done) you don't need to do anything else, the block class will automatically include the template and render it out. This is how you can call block class methods from the template using the $this object.