How to Create a Custom Module Helper in Magento 2?

Helpers – as the name suggests it is related to something which is right for you or helps you in certain ways. Helpers are the classes, primarily build to offer different ways for a common functionality in Magento 2. The Magento developers are free to utilize/call these classes from anywhere, such as controllers, views, models and helpers.

As a Magento developer, it is essential for you to know how to create a custom module helper since it is the most crucial development process for you. This blog post is going to throw light on the technical steps on how to create Magento 2 helper functions of custom module:

Module namespace is Eecom & the module name is Customhelper.

And, the directory structure will be like:

app\code\Eecom\Customhelper\etc

app\code\Eecom\Customhelper\Helper

app\code\Eecom\Customhelper\composer.json

app\code\Eecom\Customhelper\etc

Create a  composer.json file with the below content:

{

"name": "eecom/productlabel",

"description": "Eecom Custom helper",

"require": {

"php": "~5.5.0|~5.6.0|~7.0.0"

},

"type": "magento2-module",

"version": "1.0.1",

"license": [

"Commercial"

],

"autoload": {

"files": [ "registration.php" ],

"psr-4": {

"Eecom\\Customhelper\\": ""

}

}

}

This is compulsory file for module in Magento 2. It is the same, just change the name of module name with “ Eecom\\Customhelper”.

Create a  registration.php  file  with the below content:

<?php

\Magento\Framework\Component\ComponentRegistrar::register(

\Magento\Framework\Component\ComponentRegistrar::MODULE,

'Eecom_Customhelper',

__DIR__

);

This is a module registration file in Magento 2 and it is also the same, just change the module name  as ‘Eecom_Customhelper’.

Now, create a file named as module.xml  under “Etc” folder having the below content:

<?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="Eecom_Customhelper" setup_version="1.0.1">

</module>

</config>

This is a module config file in Magento 2.

And, then create a file named as Data.php under Helper folder having the below content:

<?php

namespace Eecom\Customhelper\Helper;

class Data extends \Magento\Framework\App\Helper\AbstractHelper

{

public function CustomHelperFunction($key)

{

$array = [0 => __('Default'),

1 => __('Magento Certified developers'),

2 => __('Ionic app development')

];

return $array[$key];

}

}

So, as you can see we have created a function in the above file, named as:  CustomHelperFunction ()

Now, we need to call this function in our Magento 2 site like:

echo $this->helper('Eecom\Customhelper\Helper\Data')-> CustomHelperFunction ('1');

And, it will return the value of id that you will pass in the parameter.

That’s it! We hope you’ve enjoyed this coding tour of creating a custom module helper in Magento 2.