Ruby On Rails

Tutorials

How to ignore Bullet in RSpec tests

How to ignore Bullet in RSpec tests The Bullet gem is an excellent tool for finding opportunities to improve how you grab data via ActiveRecord. On a recent project, we’ve been running Bullet in our test environment as well as development. It has helped us find some improvements to ...

Quick way to run a Ruby script in Kubernetes · Kir Shatrov

Quick way to run a Ruby script in Kubernetes · Kir Shatrov Sometimes I find myself in need of running a Ruby script on a live Kubernetes cluster. In today’s example, it had to do with generating load on MySQL, which was tricker to do from my laptop. The script had to run close to the workload in the clust...

Optimizing MemoWise Performance

Optimizing MemoWise Performance There’s a new gem in town! It’s a memoization gem called MemoWise (pun very much intended) and we think it’s the best way to memoize methods in Ruby. This post covers how we made it so fast, and you can also read our other posts about its origin s...

The Gnar Blog - Validate CSV Input With ActiveModel::Validations

The Gnar Blog - Validate CSV Input With ActiveModel::Validations We're maintaining a system that tracks information about books, including their publication dates. On occasion, publishers will send us CSVs with updated publication dates, and we need to update our Rails application to have those dates.We want a ...

6 Complex Ruby Transformations made simple with Dry::Transformer

6 Complex Ruby Transformations made simple with Dry::Transformer I often work with hashes in plain ruby, especially when I prepare standalone scripts or gem packages, and there were plenty of situations where I needed to do some simple, or more complex data transformations to achieve the expected output.In the ...

Gems, Plugins, Engines, and Mountable Engines: 4 ways to make a Gem.

Gems, Plugins, Engines, and Mountable Engines: 4 ways to make a Gem. Every time I go to make a new ruby gem, I need to look up the specific way to get started. Here’s a summary of the different options.

A Comparison of Ruby Version Managers for macOS - SitePoint

A Comparison of Ruby Version Managers for macOS - SitePoint Folks who are new to Ruby are delighted to discover that Ruby comes pre-installed on macOS. They’re often disappointed when a more experienced developer tells them, “Don’t use the Mac system Ruby.” I’ve written elsewhere about the reasons. In shor...

Simple memoization with Ruby

Simple memoization with Ruby We have some service that does time-consuming call to fetch external id for the given user:.

Get element index when using map

Get element index when using map When using map, you would like to access the index of element, instead of fetching the index:.

Avoid using unless condition with Rails

Avoid using unless condition with Rails Avoid using unless condition as it makes the code less readable, especially when using it with the present? or blank? methods provided by Rails.

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