---
title: 'This week in #dev (Jul 25, 2025)'
teaser: 'How to read Rails Guides in your favorite e-reader, and an easy way to let
  Copilot see your changes.

  '
tags: this week in dev,til,rails,artificial intelligence
author: thoughtbot
published_on: 2025-08-01
---

Welcome to another edition of [This Week in #dev](https://thoughtbot.com/blog/tags/this-week-in-dev),
a series of posts where we bring some of our most interesting Slack conversations to the public.

## Download the Rails guides as EPUB

[Matheus Richard][matheus] shares that you can download an .epub version of the
Rails guides. Now you can read them offline on your e-reader or phone! [Here's]
where you can find that download link.

[matheus]: https://thoughtbot.com/blog/authors/matheus-richard
[here's]: https://guides.rubyonrails.org/#:~:text=Rails%20Guides%20are%20also%20available%20for%20Kindle.

## An easy way to let Copilot see your changes

[Jimmy Thigpen][jimmy] learned about using [the variable `#changes` in GitHub
Copilot](https://cassidoo.co/post/gh-copilot-diff/) chat to refer to your
current changes. You can use that instead of asking it to `git diff` or
`git status`.

[jimmy]: https://thoughtbot.com/blog/authors/jimmy-thigpen

## Thanks

This edition was brought to you by [Jimmy Thigpen][jimmy] and [Matheus
Richard][matheus]. Thanks to all contributors! 🎉