Ruby On Rails

Tutorials

Deploying Rails 6 application with Dokku

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...

Error handling with Monads in Ruby

Error handling with Monads in Ruby Many modern languages, including Ruby, use Exceptions as the primary method of error handling.In this blog post, I will walk you through the history of error handling.I will briefly describe popular options but will mostly focus on the pros and co...

Exploring Big-O Notation With Ruby

Exploring Big-O Notation With Ruby 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 part...

How to deploy a Ruby on Rails application to AWS

How to deploy a Ruby on Rails application to AWS This tutorial will show you how to deploy a Rails application to AWS.There are a number of ways this task could be tackled. It can be done manually or it can be done using an infrastructure-as-code approach, with a tool like Ansible.This tutorial ...

How to deploy a Ruby on Rails application to AWS Elastic Beanstalk

How to deploy a Ruby on Rails application to AWS Elastic Beanstalk This tutorial will show you how to deploy a Rails application to AWS Elastic Beanstalk.Using Elastic Beanstalk is just one of many (perhaps an infinite number of!) AWS deployment options. Each approach has different pros and cons. I’ll briefly go ...

Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing.

Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing. Database Cleaner is a set of gems containing strategies for cleaning your database in Ruby.The original use case was to ensure a clean state during tests. Each strategy is a small amount of code but is code that is usually needed in any ruby app t...

A guide to NPM version constraints for Rubyists

A guide to NPM version constraints for Rubyists In this post, I want to answer the following question for Rubyists:What do the tilde ~ and caret ^ designations mean for version constraints in a package.json file?To answer this question, we'll compare how Rubyists declare Ruby project dependenci...

Working with tempfiles

Working with tempfiles A while back, I needed to create XML files, send them to a distant server and delete them once the transfer completed.At first, I thought about creating those files into my app’s tmp directory. Then, a cron job would run daily to delete them. It w...

Automating Rails Database Migrations on Heroku

Automating Rails Database Migrations on Heroku One problem that teams tend to run into with Rails apps on Heroku is forgetting to run database migrations before the code that depends on them is released.Luckily, there is a way to automate the running of database migrations on Heroku and to gua...

Did Rails/ActiveRecord Railroad Our Timestamps?

Did Rails/ActiveRecord Railroad Our Timestamps? Tests are supposed to help keep apps from being flaky. But once in a while, tests themselves can become flaky—even the most straightforward ones. Here’s how we dove into a problematic test on a Ruby on Rails app backed by PostgreSQL, and what we u...

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