Override Model from third party vendor in custom theme

Question

I am trying to override a Model from a third Party vendor in a custom-theme. The original file was:

/vendor/3rdpartyompany/3rdpartymodule/Model/Formatter/BaseImage.php

I copied that file over to:

/vendor/customthemevendor/customtheme/Model/Formatter/BaseImage.php

and edited the namespace in that file:

namespace Customthemevendor\Customtheme\Model\Formatter;

Last I created a /etc/di.xml and set the preference:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="3rdPartyCompany\3rdPartyModule\Model\Formatter\BaseImage" type="Customthemevendor\Customtheme\Model\Formatter\BaseImage" />
</config>

Magento2 doesn't seem to recognize my customization at all. (Basically, there is a resize image function with hardcoded values in the function, that I need to change).

Is the Overriding-process the same for themes and modules or am I missing something?

Answer 1

You can only override layout, templates, css, js, web templates under theme.

So in order to override third party module model use plugin or preference in your custom module.

Thanks!