Ruby, map with index

There’s always a tiny doubt about how to “map with index” when using Ruby. Let’s see how, and we’re also going back to basics of Ruby map in this article. [more inside]

Weird Ruby: Heredoc Delimiters

The next installment in my Weird Ruby blog series.

&&, and, ||, or, flip flops in Ruby

How to reduce your method calls by 99.9% by replacing Thread#pass with Queue#pop

When doing multi-threaded work in Ruby, there are a couple of ways to control the execution flow within a given thread. In this article, I will be looking at Thread#pass and Queue#pop and how understanding each of them can help you drastically optimize your applications: [more inside]

Configuring Rails for headless tests

I wrote a post on configuring Rails system tests for headless and headfull browsers.

How to start a Ruby on Rails 7 app with Hotwire and Tailwind CSS

There are a lot of new features in Rails that might confuse you if you’re new to the framework. In this video I create a new Rails 7 project, and I explain what the different options mean when creating new projects. [more inside]

Rails 7 application inside Docker on macOS

Sometimes we want to play with the new version of Ruby/Rails, but in order to do so we need to install dependencies which quite often is not so seamless. So let’s take a look how to use Docker and shell commands in order to quickly start new project with any combination of Ruby/Rails version and keep the macOS itself clean as a baby’s bottom.

Adding database level check constraints to Rails validations

Strengthen your data integrity with check constraints:

💎 Ruby SMTP mock - mimic any 📤 SMTP server behaviour for your test environment

Flexible Ruby wrapper over smtpmock. Mimic any 📤 SMTP server behaviour for your test environment and even more:

Rubber Duck Dev Show Episode 25 | JavaScript Options in Rails 7

Hear two rubyists discuss the different JavaScript options available in the newly released Rails 7:

Easy way to memorize SOLID principles in Ruby

Build a minimal feature flag manager in under an hour

For those who need an on-and-off system, here’s a minimal feature flag manager that’ll take you less than an hour to build. It’s a plain Ruby object but its configuration leans on Ruby on Rails.

Loops in Ruby (Part 2)

Ruby-on-Rails with ViteJS : a wonderful combination

The new Rails 7 frontend assets management seems better than the previous ones, but there is some room to completely replace it : there’s a gem that allows the developer to build the frontend entirely with ViteJS. And it rocks.

New Punk (Pixel Programming) Frequently Asked Questions (F.A.Q.) & Answers

Hello, I started a new “centralized” all-in-one page to collect all Punk (Pixel Programming - Yes, In Ruby -) Frequently Asked Questions (F.A.Q.) and Answers. It’s still the early days. The first entries include: Q: How can I generate 10 000 left-looking p(h)unks in any size (2x, 4x, 8x, etc.) individually, that is, one-by-one? Q: Is there a way to specify the tile width and height for ImageComposite (rather that the default 24 pixels)? Q: Am I allowed to create and sell my own [Crypto] Punks? Q: Can anyone explain the “Flex-How-Stupid-AND-Rich-I-Am?!” [Crypto] Punks? Why pay hundred thousands of dollars for a free public domain 24×24 pixel image? Questions and comments welcome.

Glimmer Metronome - Tap-based Tempo & Up/Down Beat Toggling

A while ago, I reported building a Glimmer Metronome sample using Glimmer DSL for SWT in only 10 minutes for the first version. Well, I extracted that sample into an external project to package as a native executable (Mac DMG file), and added tap-based tempo calculation, up/down beat toggling per-beat, mute button, stop/start button, and other improvements. [more inside]

Rails system tests with page objects

For a long time I am thinking of a better system tests organization. Let me know what you think!

Loops in Ruby (Part 1)

Ruby strftime, short examples, long explanation

“strftime” stands for “string from time”. Which means “please Ruby format the time into a human-friendly format”. Let’s see how. [more inside]

Rails 7, Bootstrap 5 and importmaps without nodejs

Rails 7 provides a —css=bootstrap option to setup a new project, but this actually relies on node, esbuild and jsbundling. Can we actually have Bootstrap working without depend on nodejs? Yes. We can! [more inside]

Using Opal Ruby with Rails 7

Opal enables writing web front-end code in Ruby, thus producing highly maintainable, productive, and understandable code on both the client-side and server-side. [more inside]

Deployment from Scratch birthday giveaway!

It’s my birthday today so I am doing a giveaway of my book Deployment from Scratch. Just retweet the post on Twitter to participate (no need to follow me!)

Unless, Case and Ternary operator in Ruby

Single attribute in-place editing with Rails and Turbo

Have you wondered what’s the simplest way to enable in-place (inline) editing of your models’ attributes? I just published a post on in-place attribute editing with Rails and Turbo.

Design Rails enums the right way