Take care when using `render` in Rails

It has implicit beauty in action controller, but watch out for these common ‘gotchas’:

Rails 5: A lot more than ActionCable!

Check out this fantastic blog post about the changes in Rails 5 apart from the major hype around ActionCable :)

Teaching a Neural Network to play a game in Ruby

In this blog post we will walk through how to build an AI that can play a computer game with a Neural Network and Q-Learning using the ruby-fann gem. https://www.practicalai.io/teaching-a-neural-network-to-play-a-game-with-q-learning/

[Screencast] Auditing with Paper Trail

Using the paper_trail gem, track changes to model records for auditing purposes and rollback changes when required. https://www.driftingruby.com/episodes/auditing-with-paper-trail

How to: Multiple root level slugs with FriendlyId

Use FriendlyId’s History to move slugs from their namespace to the root level of your Rails app

Improving spec speed in a huge, old Rails app

The story of how we improved our test suite speed by 41% in a huge, 6-year-old Rails project. Read more

Tutorial on how to deploy your Rails app with Capistrano

Learn how to deploy your Rails app with Capistrano.

A gem tells you what financial year is it now, and also the date range of it. Edit Ad

A gem tells you what financial year is it now, and also the date range of it. Edit Add topics Read more

tty-progressbar v0.12.0 release with parallel multi bars

The newest release of tty-progressbar provides parallel multi bars rendering. In addition, adds ability for a single progress bar to iterate over enumerable and many more - see changelog. Enjoy!

Change sidebar content for certain Rails controllers

Most (or even all) pages in your Rails application have the same sidebar content, but just one needs to show something different? On your login and registration pages, you don’t want to show the last five books/movies/events, but a marketing text why people should signup for your site? You’re currently using an if/elseif/else statement to switch content based on the controller’s name? I’ll show you how to fix this with the help of Rails’ template inheritance:

Rearmed-JS v2.0.0 Released! - Make your JS code relaxing and readable

I just released v2.0.0 of my plugin Rearmed-JS. This library is a collection of helpful methods and monkey patches for Arrays, Objects, Numbers, and Strings in Javascript that will make your code more relaxing and more readable by taking inspiration from Ruby. Works in the browser and NodeJS. See the changelog for more details.

BRAKEMAN: Rails Security Scanner

BRAKEMAN: Rails Security Scanner

Tips on how to speed up a Ruby Test Suit

“Why on earth is my test suite taking so long to run?” Read more

Sequel 5 Released

After 50 releases of Sequel 4, Sequel 5 has been released with frozen datasets, symbol splitting disabled by default, and reduced chance of SQL injection by making SQL code fragment usage explicit.

Ruby: pass by value or pass by reference?

Describes how Ruby passes arguments into functions.

The perils of writing request specs using concurrent-ruby under the JVM

On writing request specs for a JRuby API that uses the concurrent-ruby gem: what issues arise and how to fix them. full article

Autocorrect with Postgres Trigrams

I wrote an article about using pg_trgm to implement auto-correction in a Rails app backed by PostgreSQL.

Introduction to Concurrent Ruby Gem

Concurrency is the ability of a program to make progress on a task that is spread out over different slices of time. It allows us to run multiple “threads” at the same time. As one thread may be sleeping or waiting on I/O, another thread may take priority and start working, thus making optimal use of available CPU time. When you think of concurrency, think of “threads”. Read more

world.db.starter Sample - Build Your Own HTTP JSON API (w/ world.db)

Hello, I’ve updated the world.db web service starter sample that gets you started building your own HTTP JSON API using the world.db (incl. continents / countries / states / cities / etc.). What’s news? The starter sample now uses the new webservice library (a simplified sinatra 2.0-style library for HTTP JSON APIs). Enjoy. Cheers.

Automate repetitive coding tasks with Snippets

Snippets is a text-editor feature that can save you hours by automating the insertion of certain code blocks that come up often. Learn how to use Snippets in Sublime Text in this short screencast.

Elm components in a Rails application

How I got RSpec to load 50 times faster

RSpec load time is important in a TDD workflow design environment. Here’s how I got mine to be lightning-fast. https://schwad.github.io/ruby/rails/testing/2017/08/14/50-times-faster-rspec-loading.html Read more

Careful what you measure: 2.1 times slower to 4.2 times faster – MJIT vs TruffleRuby

Have you seen the MJIT benchmarks and been impressed by their performance numbers? I was too, but upon closer inspection I’ve seen TruffleRuby go from 2.1 times slower to 4.2 times faster than MJIT. It’s an interesting story of what to measure and what really counts in the end.

Verify user phone numbers in Ruby on Rails with the Authy verification API

If you ever need to contact your application’s users by phone then it’s good practice to verify that the phone number they enter is in fact theirs. Let’s see how to verify phone numbers in a Rails 5 application using the Authy Verification API.

inject vs each_with_object - which is better and when

inject vs each_with_object are quite similar but there are tiny differences. Find out when to use which one and why