Create Hello World in magento2

Latest update:  You can check and download my new sample extension at here : Thienphucvx_sample

It includes:
– Work well with latest magento 2 version.
– Setup and install sample data for simple blog database
– Sending a request and create new blog post.
– It also includes cache tags so you need to clear cache to see new post after creating.

Bonus :

Magento 2 debug extension. It will be useful for debug purpose

In this tutorial, we create new module : Inbusiness_Helloworld
So let’s create a module that simply echos “Hello World” in the content.
1/ First we will start with a module.xml file to declare with magento2 about new module :

app\code\Inbusiness\Helloworld\etc\module.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
<module name="Inbusiness_Helloworld" schema_version="0.0.0.1" active="true">
<sequence>
<module name="Magento_Core"/>
<module name="Magento_Store"/>
</sequence>
<depends>
<module name="Magento_Store"/>
</depends>
</module>
</config>

2/ Create app\code\Inbusiness\Helloworld\etc\frontend\page_types.xml

<?xml version="1.0"?>

<page_types xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../Core/etc/page_types.xsd">
<type id="helloworld_index_index" label="Hello World Demo Site"/>
</page_types>

3/ Create app\code\Inbusiness\Helloworld\etc\frontend\routes.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../../lib/internal/Magento/Framework/App/etc/routes.xsd">
<router id="standard">
<route id="helloworld" frontName="helloworld">
<module name="Inbusiness_Helloworld" />
</route>
</router>
</config>

4/ Create app\code\Inbusiness\Helloworld\Controller\Index.php

<?php
namespace Inbusiness\Helloworld\Controller;

use Magento\Framework\App\Action\NotFoundException;
use Magento\Framework\App\RequestInterface;

class Index extends \Magento\Framework\App\Action\Action
{
/**
* @var \Magento\Framework\Mail\Template\TransportBuilder
*/
protected $_transportBuilder;

/**
* @var \Magento\Framework\Translate\Inline\StateInterface
*/
protected $inlineTranslation;

/**
* @var \Magento\Framework\App\Config\ScopeConfigInterface
*/
protected $scopeConfig;

/**
* @var \Magento\Store\Model\StoreManagerInterface
*/
protected $storeManager;

/**
* @param \Magento\Framework\App\Action\Context $context
* @param \Magento\Framework\Mail\Template\TransportBuilder $transportBuilder
* @param \Magento\Framework\Translate\Inline\StateInterface $inlineTranslation
* @param \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig
* @param \Magento\Store\Model\StoreManagerInterface $storeManager
*/
public function __construct(
\Magento\Framework\App\Action\Context $context,
\Magento\Framework\Mail\Template\TransportBuilder $transportBuilder,
\Magento\Framework\Translate\Inline\StateInterface $inlineTranslation,
\Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
\Magento\Store\Model\StoreManagerInterface $storeManager
) {
parent::__construct($context);
$this->_transportBuilder = $transportBuilder;
$this->inlineTranslation = $inlineTranslation;
$this->scopeConfig = $scopeConfig;
$this->storeManager = $storeManager;
}
}

5/ Create app\code\Inbusiness\Helloworld\Controller\Index\Index.php

<?php
namespace Inbusiness\Helloworld\Controller\Index;

class Index extends \Inbusiness\Helloworld\Controller\Index
{
/**
* Show Hello World page
*
* @return void
*/
public function execute()
{
$this->_view->loadLayout();
$this->_view->renderLayout();
}
}

6/ Create app\code\Inbusiness\Helloworld\view\frontend\layout\helloworld_index_index.xml

<?xml version="1.0"?>
<layout xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../Core/etc/layout_single.xsd">
<update handle="page_one_column"/>
<referenceBlock name="head">
<action method="setTitle">
<argument translate="true" name="title" xsi:type="string">Hello World Demo Site</argument>
</action>
</referenceBlock>
<referenceContainer name="content">
<block class="Magento\Framework\View\Element\Template" name="helloworld" template="Inbusiness_Helloworld::helloworld.phtml"></block>
</referenceContainer>
</layout>

7/ Create app\code\Inbusiness\Helloworld\view\frontend\templates\helloworld.phtml

<?php
$message = "Hello World";
echo $message;
?>

When you enter : your_site/helloworld, “Hello World” will be displayed.
Happy coding !