A Guide to Translating Ecto Changeset Errors in Phoenix Applications

The content explains the process of translating Ecto changeset errors in Phoenix applications. It starts by highlighting the common mistake of mixing web and context concerns when trying to implement translations using the Gettext library. Instead of handling translations directly within custom validations, it suggests a better practice of utilizing the Phoenix translation system that extracts strings into gettext-compatible translation files. The author demonstrates how to manually add translations for custom validation errors into the generated errors.pot file and how to use the provided translate_error function to ensure that errors are correctly translated. The article emphasizes the simplicity and effectiveness of the Phoenix approach to handling changeset error translations while maintaining a clean architecture.