Ruby On Rails

Tutorials

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...

How to use Uppy with ActiveStorage (Example) | GoRails

How to use Uppy with ActiveStorage (Example) | GoRails Uppy.io is a fantastic file uploading frontend Javascript library. It provides a drag and drop interface along with copy .

A Rubyist's Introduction to Character Encoding, Unicode and UTF-8

A Rubyist's Introduction to Character Encoding, Unicode and UTF-8 It's very likely that you've seen a Ruby exception like UndefinedConversionError or IncompatibleCharacterEncodings. It's less likely that you've understood what the exception means. This article will help. You'll learn how character encodings work...

How to Perform Concurrent HTTP Requests in Ruby and Rails

How to Perform Concurrent HTTP Requests in Ruby and Rails Let’s start by describing what’s a blocking I/O. Long story short, any operation that does not directly use the CPU cycles from its thread, but instead delegates the work to external processes is a blocking I/O. Typical examples in the context of ...

Building a Mocking Library in Ruby

Building a Mocking Library in Ruby This tutorial is based on Andy Lindeman’s awesome talk — Building a Mocking Library presented at Ancient City Ruby 2013. This is not a direct transcript of the video, but the code presented is almost the same (with minimal changes).In his talk, An...

Configurable framework agnostic plain Ruby email validator. Verify email via Regex, DNS and SMTP. Be sure that email address valid and exists.

Configurable framework agnostic plain Ruby email validator. Verify email via Regex, DNS and SMTP. Be sure that email address valid and exists. 🚀 Configurable framework agnostic plain Ruby 📨 email validator. Verify email via Regex, DNS and SMTP. Be sure that email address valid and exists. -.

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