Magento 2, override \lib\ classes

Question

Can you override the classes in \lib\internal\Magento\Framework and if so how? I know how to use plugins/preferences to override the classes in \code but these methods do no seem to work with the lib classes. Thanks.

Answer 1

It's definitely feasible using preferences.

You can do something like this in a di.xml file:

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Framework\Class\You\Want\To\Rewrite" type="Vendor\Module\Your\Class" />
</config>

This method is widely used in the Magento 2 original files, for example: https://github.com/magento/magento2/blob/develop/app/code/Magento/Backend/etc/di.xml