Ruby On Rails

Tutorials

Animation of the SHA-256 hash function in your terminal.

Animation of the SHA-256 hash function in your terminal. An animation of the SHA-256 hash function in your terminal.I used this code to help me make a video to explain how SHA-256 works.

Run Rails 6 System Tests in Docker Using a Host Browser

Run Rails 6 System Tests in Docker Using a Host Browser The problem: we wanted to get Rails system tests running using a browser on our development machines.The complication: we develop our Rails project within Docker, in order to make every aspect of our development environment reproduceable.The prefe...

Correct Ruby Threads and ActiveRecord Connections

Correct Ruby Threads and ActiveRecord Connections Recently, we had an opportunity to trivially parallelize some ActiveRecord queries in our Ruby server. In a common response structure, we needed to both query for the actual data requested along with some meta-information about pagination, etc.Ins...

Rails 6 System Tests, From Top to Bottom

Rails 6 System Tests, From Top to Bottom A Rails 6 system test is a test that exercises your application in a way that, as much as possible, simulates a real user interacting with it via a browser. More than any other kind of tests, system tests verify that the whole app does what it’s s...

Create a Video Party App With Rails Part 1: Building the Backend

Create a Video Party App With Rails Part 1: Building the Backend My son recently celebrated his 9th birthday, and like many kids his age, he was looking forward to his birthday party for months. In the midst of the Covid-19 pandemic, we knew that we needed to do something different this year, so I built him a v...

Animations with Turbolinks and Stimulus

Animations with Turbolinks and Stimulus When navigating back, Turbolinks will first display a preview of the page that was stored in the local cache and then replace this preview by the server response. This give the instant page load feeling effect of Turbolinks.This preview comes from...

Ruby benchmarking tool you didn't know you need

Ruby benchmarking tool you didn't know you need Attention web developers working with lots of data - below are first class problems to consider:slow database queriespage time outsWhen customer support barks at you to resolve a 500 error, what do you do? Initial instincts suggest the two problem...

Contributing to a Gem

Contributing to a Gem Drifting Ruby Screencasts is a collection of short tutorial screencast videos and documentation for accomplishing functional concepts in web. So, you've been using a gem for some time and you've either discovered that the gem isn't working correct...

Ways for reducing Heroku slug size

Ways for reducing Heroku slug size Techniques for reducing Heroku slug size for Rails applications. First things first, what is a slug?A slug is essentially the compressed copy of your application comprising of your git repo along with packages that are installed at deploy time lik...

Multiple Instances of Webpacker

Multiple Instances of Webpacker I am a big fan of OS X of spaces and usually have quite a few instances of VSCode opened in various spaces.One early headache with this approach was Rails starting on port 3000 by default. The fix for this was quite easy. Just add an ENV[1] variab...

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