How to Remove Block From Layout on Specific Condition in Magento 2

In this post I am going to explain how to remove block from layout on specific condition Magento 2.

If you have a specific condition to add/remove block then you can achieve it by observer.

Here I have given the example to remove search block.

First you need to create event.xml file on below path.

Path: app/code/<vendor>/<module>/etc/frontend/events.xml

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="layout_generate_blocks_after">
        <observer name="remove_search_block" instance="<vendor>\<module>\Observer\RemoveBlockSearch" />
    </event>
</config>

Now, create observer on below path.

Path: app/code/<vendor>/<module>/Observer/RemoveBlockSearch.php

<?php

namespace <vendor>\<module>\Observer;

use Magento\Framework\Event\Observer;

class RemoveBlockSearch implements \Magento\Framework\Event\ObserverInterface
{

    public function execute(Observer $observer)
    {
        $layout = $observer->getLayout();
        $block = $layout->getBlock('top.search');

        if ($block) {
            // Here you can add yout condition
            $layout->unsetElement('top.search');
        }
    }
}

After adding above code, search block will removed from the Header.

 

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