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What Is The Purpose Of Private?

What Is The Purpose Of Private? Codebases are constantly evolving. New code gets added to implement new requirements. If we’re lucky, existing code gets renamed, redesigned, refactored and broken apart to improve clarity, simplicity, and performance. And if we’re really lucky, c...

Ruby Refinements Have One Good Use Case

Ruby Refinements Have One Good Use Case This article is not going to explain what Ruby refinements are. I do not assume that all Rubyists know what they are - in the 10 years since they have been a part of Ruby, real life usages are astonishingly rare. If you are aware that they exist, ...

When I use controller/request specs and when I don't

When I use controller/request specs and when I don't Every so often I come across a question of controller or request specs and when to use them.Before I can address this I need to get some terminology out of the way. In RSpec there are controller tests and request specs which are similar but subtly...

Code smell: long, procedural background jobs (and how to fix it)

Code smell: long, procedural background jobs (and how to fix it) I’ve worked on a handful of Rails applications that have pretty decent test coverage in terms of model specs and feature specs but are lacking in tests for background jobs. It seems that developers often find background jobs more difficult to test...

What level of test coverage should I shoot for?

What level of test coverage should I shoot for? “What level of test coverage should I shoot for?” is one of the questions most commonly asked by beginners to Rails testing.My answer is that you shouldn’t shoot for a particular level of test coverage. I recommend that instead you make testing a ...

How to Migrate Your JavaScript From Sprockets to Webpacker

How to Migrate Your JavaScript From Sprockets to Webpacker Back in 2011, Rails 3.1 introduced The Assets Pipeline feature using the Sprockets gem. This made it really easy to handle assets (images, fonts, JavaScript, CSS and more), solving many of the issues that developers had to face everyday.In 2012, W...

Build your own RSpec free Book by Paweł Dąbrowski

Build your own RSpec free Book by Paweł Dąbrowski I have good news for you!I decided to launch a blog dedicated only to Ruby, so readers are sure they won't read anything that won't be interesting for them. And here it is Long Live Ruby!To say thank you for your patience and trust, I prepared an ...

Check where a method is defined in Ruby

Check where a method is defined in Ruby As the ‘set’ method comes from the Sinatra gem, it will output the path to the base.rb file from the gem, and the line number.If you are using a Mac, you can open Finder, press Command Shift G and paste in the path above to navigate to it quic...

What's the Best EC2 Instance Type for Rails Apps?

What's the Best EC2 Instance Type for Rails Apps? Do you ever look at the list of Amazon EC2 instance types?. Those are sizes of virtual machine you can rent to run your code on. Well, okay, they're groups of sizes, since each one of those headings has a bunch of different sizes of VM...So what t...

Ruby 3.0 Interpolated Strings Are No Longer Frozen

Ruby 3.0 Interpolated Strings Are No Longer Frozen In Ruby, frozen_string_literal: truemakes all string literals frozen by default and it helps in reducing needless memory allocations by not creating a new allocation each time a string is redefined.In Ruby 2.7.1 and earlier versions, interpolated ...

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