This week in #dev (Jul 28, 2023)

Welcome to another edition of This Week in #dev, a series of posts where we bring some of the most interesting Slack conversations to the public.

Comparing Version Strings

Svenja has discovered the use of Gem::Version to compare version strings. This class is provided by RubyGems and handles comparing versions where strings would fail because they’re compared lexicographically.

"6.10" >= "6.4"
# => false"6.10") >="6.4")
# => true

Git: Intending to Add Untracked Files

Neil suggested using the command git add --intend-to-add (-N for short) to move untracked files to the Changes not staged for commit area. This will allow you to use git add --patch or git diff, for example, to review changes on files that haven’t been added to the Git repository yet.

Reusable Components With The <template> Tag

Summer recommended using an invisible <template> tag to render multiple instances of a set of HTML tags in vanilla JavaScript. This tag provides an interface for creating a clone of its contents, modifying it, and inserting it into the page.

Sean Doyle chimed in to mention that there is a Template Parts proposal to WICG that will support rudimentary “rendering” with placeholders and values:

<template id="foo">
  <div class="foo {{y}}">{{x}} world</div>

  const templateElement = document.getElementById("foo")
  const variables = { x: "Hello", y: "bar"}
  const templateInstance = new TemplateInstance(


There’s a package that implements this proposal if you want to try it out.

Checking Feature Compatibility Across Email Clients

Fer has introduced, a website that shows how well a feature is supported by email clients (you probably know He has used it to discover that prefers-color-scheme is not supported by Gmail.

Self-Destructing Stimulus Controllers

Summer suggested using self-destructing Stimulus controllers as a way to trigger JavaScript code via a Turbo Stream response. This approach involves rendering an invisible HTML tag that connects to a Stimulus controller, which will then destroy the HTML tag once it has completed its work. Matheus Richard added that a custom Turbo action is an alternative solution to this problem.


This edition was brought to you by Fer Perales, Matheus Richard, Neil Carvalho, Summer ☀️, and Svenja Schäfer. Thanks to all contributors! 🎉