The use of ifconfig is for condition which is coming from system config values. The value of this will be 0 and 1(boolean). According to that value, the block will be rendered. Here we learn about in Magento 2 add ifconfig in override block XML.

Any block can be configured to show or not based on a Magento/Config/Model/Config/Source/Yesno system configuration field, using the ifconfig argument. For the value, use the XPath to the needed field.

[dt_code]<block class=”Namespace\Module\Block\Type” name=”block.example” ifconfig=”my/yesno/field”/>[/dt_code]

There are three ways to set the template for a block:

• using the template attribute
• using the <argument> instruction
• using the <action method="setTemplate"> instruction

XPath to the system configuration field. E.g. “section/group/field” (company_users/password/enabled).

I want to add ifconfig in override block XML in Magento 2

Ifconfig will show template only when it has the value true, it does not work as else condition. if you use in else condition then i suggest you creating a helper function and add the conditions in the helper method.

so please follow below steps.

Step:1 Create  Data.php File

Create Data.php at app/code/Custom/Module/Helper/Data.php

<?php

namespace Custom\Module\Helper;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Store\Model\ScopeInterface;

class Data extends \Magento\Framework\App\Helper\AbstractHelper
{
    /**
    * Configuration paths enable module
    */
    const XML_PATH_COMPANY_USERS_PASSWORD_ENABLED = 'company_users/password/enabled';
    /**
    * @var ScopeConfigInterface
    */
    protected $_scopeConfig;

    public function __construct
    (
    	ScopeConfigInterface $scopeConfig
    ) {
        $this->_scopeConfig = $scopeConfig;
    }

    public function getTemplate()
    {
    	$enabledModule = $this->_scopeConfig->getValue(self::XML_PATH_COMPANY_USERS_PASSWORD_ENABLED,ScopeInterface::SCOPE_STORE);
    	
        if ($enabledModule) {
            $template =  'Custom_Module::company/customer/add.phtml';
        } else {
            $template = 'Magento_Company::company/management/dialog/customer/add.phtml';
        }

        return $template;
    }
}

In the above helper class  code , is specified according to the following:

[dt_code] $this->_scopeConfig->getValue ( $path,$scopeType = ScopeConfigInterface::SCOPE_TYPE_DEFAULT,$scopeCode = null ) [/dt_code]

• $path: The path through the tree of configuration values, e.g., ‘general/store_information/name’
• $scopeType: The scope to use to determine config value, e.g., ‘store’ or ‘default’
• $scopeCode

Step:2 Include your block in the layout Instead of this

<referenceBlock name="red.block.name">
    <action method="setTemplate">
        <argument name="template" xsi:type="helper" helper="Custom\Module\Helper\Data::getTemplate"></argument>
    </action>
</referenceBlock>

In the above layout code , is specified according to the following:

• setTemplate: The highest priority template is one with setTemplate action <action method=”setTemplate”>.Second priority has the attribute specified as <referenceBlock name=”…” template=”…”/>, and the lowest priority has the template using <argument>.
• helper: helper attribute you define a helper class method.Data is a helper class and getTemplate is a method name that return a template.

If you have any queries regarding this post, use the comment section below!

I hope this help you.

Keep sharing !!