How are the «layouts.xml» files discovered?

dmitry_fedyuk · May 7, 2017, 8:14am

magento/magento2/blob/2.1.6/app/code/Magento/Theme/etc/di.xml#L53-L59


      
          <type name="Magento\Theme\Model\Layout\Config\Reader">
              <arguments>
                  <argument name="fileName" xsi:type="string">layouts.xml</argument>
                  <argument name="converter" xsi:type="object">Magento\Theme\Model\Layout\Config\Converter</argument>
                  <argument name="schemaLocator" xsi:type="object">Magento\Theme\Model\Layout\Config\SchemaLocator</argument>
              </arguments>
          </type>

To be able to use a layout for actual page rendering, you need to declare it in layouts.xml.
Conventionally layout declaration file can be located in one of the following locations:

Module layout declarations: <module_dir>/view/frontend/layouts.xml
Theme layout declaration: <theme_dir>/_/layouts.xml

dmitry_fedyuk · May 7, 2017, 8:39am