Rails Autoload Path

by Yuva, Co-founder

Typically autoload paths configured in application.rb will be like this:

config.autoload_paths += %W(lib)

Recently we faced a problem where we were adding another root level folder app to autoload_paths, and using one of utility classes inside that folder. Everthing worked fine in development, but not in production. We started seeing strange errors while running migrations:

cannot load such file -- app/subdir1/utility_class

Inspecting $LOAD_PATH revealed that there is no absolute path for app folder. Appending autoload_path with absolute path solved this issue.

config.autoload_paths += [ Rails.root.join("app") ]

More articles

Protecting Your LLM Applications from Prompt Injection Attacks

Learn practical techniques to defend against prompt injection attacks in AI applications with simple code examples.

Read more

How to Read a Flame Graph in Chrome DevTools

A deep, practical guide to reading flame charts in Chrome DevTools, spotting expensive functions, and validating performance improvements.

Read more

Your competitors are already using AI.
The question is how fast you want to unlock the value?

Don't know where to start?

AI is everywhere but it's unclear which investments will actually move your metrics and which are expensive experiments.

Your data isn't ready

Most AI projects fail at the data layer. Pipelines, quality, access all need work before LLMs can deliver value.

Internal teams are stretched

Your engineers are shipping product. They don't have capacity to also become AI specialists with production-grade experience.

Legacy systems block everything

Aging, undocumented codebases make AI integration slow, risky, and expensive. They need to move first.

Don't Worry. We've got you covered.

Start with the audit.

Book a free discovery call →