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Layout XML in Themes<br />
If you want to see the results of the layout merging on your <strong>developer</strong> machine, do<br />
the following:<br />
• Navigate to \Magento\Framework\View\Result\Page<br />
• Locate the render() method.<br />
• After the $output = $this->renderPage(); method, add:<br />
• $output .= $this->getLayout()->getXmlString();<br />
Go to a page on the website and view source. The XML will be appended after the<br />
HTML tag.<br />
How do design areas influence merging?<br />
Layout XML instructions are first merged in the base area and then by the area that<br />
applies to the current request (<strong>frontend</strong> or adminhtml).<br />
Here is the order in which layout XML is merged:<br />
• Module base files loaded<br />
• Module area files loaded<br />
• Sorted according to their module priority (array index of module’s position in<br />
app/etc/config.php)<br />
• If their priorities are equal, they are sorted according to their<br />
alphabetical priority.<br />
• Theme files (from furthest ancestor to current theme)<br />
• Layout files loaded<br />
• Override files replaced<br />
Copyright © 2018, SwiftOtter, Inc.<br />
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