magento2 enable/disable value get and set value

Question

I have a module which shows value in the frontend, and from admin system configuration I want to disable that module options are coming like yes/no no I want to get that value of enabling/ disable module in magento2

as you can see in the picture that options are coming now I want to enable/disable module through these options reference:https://www.mageplaza.com/magento-2-module-development/create-system-xml-configuration-magento-2.html

Answer 1

you can create Helper file (Data.php) at this location Mageplaza/HelloWorld/Helper/Data.php.

<?php
namespace Mageplaza\HelloWorld\Helper;

use Magento\Framework\App\Helper\AbstractHelper;
use Magento\Framework\App\Helper\Context;
use Magento\Store\Model\ScopeInterface;

class Data extends AbstractHelper
{
    protected $context;

    public function __construct(Context $context)
    {
        $this->context = $context;
        parent::__construct($context);
    }

    public function isEnable()
    {
        return $this->scopeConfig->getValue('helloWorld/general/enable', ScopeInterface::SCOPE_STORE);
    }
}

Now Write this code in phtml file :

<?php 
$helper = \Magento\Framework\App\ObjectManager::getInstance()->get('Mageplaza\HelloWorld\Helper\Data'); 
if($helper->isEnable()) : ?>

//WRITE YOUR CODE HERE

<?php endif; ?>

if you want to created field in value set then below file create
etc/config.xml in your extension

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
    <default>
        <helloworld>
            <general>
                <enable>1</enable>
                <price>100</price> <!-- here price is field name-->
                ---------<!--other fields-->
            </general>
        </helloworld>
    </default>