Overriding Rails Engine Models and Controllers: A Guide for Developers

The article discusses the process of overriding models and controllers in Rails engines. It explains that Rails engines are mini Rails applications that can be mounted inside a main app and can come with their own models, controllers, and views. However, there may be instances where developers need to make tweaks to these engine models and controllers. The article introduces the concept of Rails overrides, which allow developers to reopen classes that cannot be easily monkey-patched. It provides step-by-step instructions on how to load custom overrides and provides an example of creating an override file for a specific class. The article concludes by stating that overrides are a straightforward way to replace engine models and controllers. It also mentions that there is an alternative method using ActiveSupport::Concern for more complex code replacements. This article is a valuable resource for developers working with Rails engines who need to customize their functionality.