The Ruby and Rails community linklog
Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!
Submit a post
Post Preview
Note: Only the first pargraph is shown on the front page and overly long paragraphs may be broken up.
Getting Started With System Tests in Rails With Minitest
Dive into instances when generic methods are worth replacing with specific alternatives, illustrated by cleaning up strings. [more inside]
A trick with Ruby Hash.new
Hashes are used a lot in Ruby (sometimes even abused) and they have a very interesting functionality that is rarely used: Hash.new has 3 different forms [more inside]
Opening The Ruby Concurrency Toolbox
We just published an excellent post by Alex Braha Stoll. You’ll learn about all the tools that Ruby provides us for writing concurrent programs. You’ll see the same problem solved by each of these tools. That makes it easy to compare them. And finally, you’ll learn what might be on the horizon for Ruby concurrency. [more inside]
Monitor performance of your Rails application
https://github.com/igorkasyanchuk/rails_performance This gem is a simple alternative to the NewRelic, Datadog, etc. It’s using local Redis to store the information.
html-template gem - old-style classic HTML template language / engine like it's 1999
Hello, I’ve put together a new old-style classic HTML template language / engine like it’s 1999 that includes a back-to-the-future ERB converter too. The original HTML::Template package was written by Sam Tregar et al (in Perl with a first 1.0 release in 1999!). Happy text processing and template merging in ruby. Cheers. Prost.
Automatic image moderation using Amazon Rekognition
AWS provides a huge number of cloud services. Today we will focus on Amazon Rekognition which can help us with automatic moderation of uploaded images. By adding custom validation we will prevent uploading inappropriate content like nudity or violence. Read the post
Rails adds support for if_exists/if_not_exists on remove/add_column in migrations
Manage Redis by Rails Application
I come to present a tool that I have developed with 2 others developers https://github.com/OpenGems/redis_web_manager [more inside]
Ruby Quiz - Challenge #17 - Build an HTML Template Engine Like It's 1999
Hello, It’s Friday. Ruby Quiz time! Join us for the second challenge in the new year in 2020! Here we go: Challenge #17 - Build an HTML Template Engine Like It’s 1999 Let’s say you have the following blog roll / channels defined in ruby… Post your code snippets on the “official” Ruby Quiz Channel, that is, the ruby-talk mailing list. Happy text processing and template merging with Ruby.
Backward-compatible database migrations
A look at best practices, coupled with a horror story: https://withatwist.dev/backward-compatible-database-migrations.html
AppSignal Ruby Gem 2.10: Better Diagnose (And More)
AppSignal released Ruby gem 2.10. It focusses mostly on diagnose and configuration. Here’s a round-up of what’s in the release - https://blog.appsignal.com/2020/02/05/ruby-gem-2-10.html
Deploying Rails 6 application with Dokku
Heroku, AWS, Google Cloud are great services for hosting Rails application but they are expensive. If you are developing a small app, kicking off a startup or just playing with Rails you can use cheaper solutions - cloud hosting, like DigitalOcean or Upcloud. The problem is the setup - you need to install dependencies on your own. Then deploy your application manually or using for example capistrano, which also requirers a lot of setup. What if we had self-hosted heroku? Read the post
news.rb quick starter script - build your own newsfeed in 1-2-3 steps in 5 minutes
Hello, a follow-up to the new News module to get you started really quick. A new news.rb quick starter script that lets you build your own facebook newsfeed in 1-2-3 steps in 5 minutes. Use the 20+ pre-configured ruby news channels or add your own. Happy planet! Cheers.
Exploring Big-O Notation With Ruby
New article on our blog: You know Big-O is important - not only for acing your next job interview but for knowing how code works at scale. But have you ever taken the time to go beyond a superficial understanding of the subject? In this article, Julie Kent uses equal parts math and Ruby to reveal the beating heart of Big-O and show us how it ticks. https://www.honeybadger.io/blog/big-o-notation-ruby/
Handling Ruby 2.7 deprecations warnings
In Ruby 3.0, positional arguments and keyword arguments will be separated. For now ruby 2.7 brings deprecations warnings that notifies us that our code should be updated. How should we handle them? Read the post
pluto-news gem - newsreader for easy (re)use - build your own newsfeed in 5 minutes
Hello,
I’ve put together a new News module that offers easy to (re)use “porcelain” helpers / methods that hide the “plumbing” of the pluto machinery for building your own newsreader or newsfeeds in minutes in two easy steps, that is, News.subscribe and News.update. Happy planet. Cheers. Prost.
Working with temporary files in Ruby
⏰ Tempfiles versus Files 🗑 Tempfiles and Ruby’s garbage collector 🤪 Tempfiles quirks (and how to embrace ‘em) [more inside]