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How does one add a new block and template file to the header in Magento2?

So far I've created a child theme, which is working, including a default.xml, which is successfully moving other block around. But for creating a new block it won't work.

So far I have:

<?xml version="1.0" ?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
    <move element="top.links" destination="header-wrapper" before="-" />

    <referenceContainer name="header-wrapper">
        <container name="custom.header" htmlClass="headerSitemenu" htmlTag="div">
            <block class="Magento\Framework\View\Element\Template" name="navigation.sections" before="-" template="Magento_Theme::html/headersitemenu.phtml">

            </block>
        </container>
    </referenceContainer>

and have created headersitemenu.phtml inside <theme>/Magento_Theme/html.

Flushed and cleaned the cache etc, but nothing shows.

1 Answer 1

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wrong template file location it should be in

<theme>/Magento_Theme/templates/html/headersitemenu.phtml

Update

block name navigation.sections already exist so you can't use change to some other name, block name should be unique. I reckon enable developer mode to get error details. logs are placed in <magento-root>/var/log/* check there you got any error related to invalid template.

if you would like to customize existing block, change <block ..... to <referenceBlock name="navigation.sections">

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  • Thanks for catching that! It's still not showing up, but I clearly needed to fix that too! Oct 7, 2016 at 11:33

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