You are upgrading a Rails application. You finished fixing a deprecation warning and it’s not present anymore. You continue working on other tasks and one day you find out the deprecation is back in the codebase. New code was added using the deprecated behavior, but it was not detected and now it needs to be fixed again…

How can you prevent that from happening and, at the same time, let the team know?

Upgrading from Ruby 2 to Ruby 3 can be a challenging task, especially when your Rails application relies on ActiveJob with Sidekiq. In the process, you may encounter cryptic ArgumentError exceptions that make the upgrade seem daunting. By following along you’ll be well-equipped to avoid some of the hurdles that come your way.

Over the years, Rails has been changing the default way to handle assets while also adding different alternative options at the same time.

At first there were static files, then Sprockets appeared, then we had a choice between Webpacker and Sprockets for a few years, now Webpacker is gone and importmaps are the default. But jsbundling-rails and cssbundling-rails are also official options.

Sound confusing? In this article we’ll try to explain the history of all these changes.

On Monday June 12th, 2023, FastRuby.io partnered with Expedited Security opens a new window to talk about how to secure your Ruby on Rails application.

In this free webinar Ernesto Tagwerker opens a new window (FastRuby.io) and Mike Buckbee opens a new window (Expedited Security) discussed topics of interest related to Rails security opens a new window (exploitable ActiveRecord code, vulnerable dependencies, botnets, DDoS, a breakdown of common threats, and more).

You’ll also get a sneak peak of Wafris opens a new window , an Open Source service to prevent attackers and dark traffic to your application and of our new Rails Security Audit opens a new window , a service to detect vulnerabilities and exploitable code in your app!

After upgrading your application from Rails 3 to Rails 4, you might start seeing the following deprecation warning if you are using the readonly option in an association.

DEPRECATION WARNING: The following options in your Company.has_many :users declaration are deprecated: :readonly. Please use a scope block instead. ...

In this blog post, we’ll discuss in detail what the readonly option is and how to handle the deprecation warning.

As always, RailsConf was a great experience this year. For the fourth time, we gave the FastRuby.io Rails Upgrade Workshop. It was actually my 2nd time participating in running the workshop, and my co-worker, Fiona’s 1st time.

Each time we run the workshop, we like to bring in a new co-presenter, so different members of our team can have the opportunity to present at RailsConf.

Rails Engines are an architectural pattern that can be used to modularize a Rails application. They are self-contained applications that can be mounted within a larger Rails application. In this post, we will dive into the world of Rails Engines and explore what they are, how to create them, how to use them, when to use them, and why they are important.

Ever since we started offering productized Ruby and Rails upgrade services opens a new window and upgrade roadmaps opens a new window , we’ve been interested in helping as many people and companies as possible.

Unfortunately, in the past we’ve had to turn down companies who wanted to work with us but couldn’t secure the minimum monthly budget to work with our experts.

I’m pleased to announce that we’re now offering new opportunities for startups and small businesses to work alongside our team.

In this article, I will share a few new options to collaborate with our team of experts who specialize in technical debt opens a new window remediation.

Power Home Remodeling (Power) opens a new window is the nation’s largest full-service exterior home remodeler and a top workplace.

Headquartered in Chester, Pennsylvania with offices in 18 territories across the United States, the award-winning company’s primary product line includes windows, siding, doors, roofing, solar roofing panels, and attic insulation.

In this article we will share how our Tune Report opens a new window helped Power speed up their application by reducing their average page load time from 5 to 3 seconds.

Recently, while working on a Rails 6.1 to 7.0 upgrade, we encountered the following deprecation warning regarding changes made to ActiveRecord::Relation’s merge method:

"Merging (#{node.to_sql}) and (#{ref.to_sql}) no longer maintains both conditions, and will be replaced by the latter in Rails 7.0. To migrate to Rails 7.0's behavior, use relation.merge(other, rewhere: true)."

In this article, we will talk about the expected behavior of merge, how it has changed and what to do in order to use the new behavior if you find yourself looking at this deprecation.

At FastRuby.io we love Ruby on Rails opens a new window because it is so powerful: You can quickly create an application that is feature complete, stable, and secure opens a new window

Unfortunately, maintaining a Rails application up to date and secure takes some effort.

In this blog post, we will cover a few Ruby gems and best practices that you can use to stay on top of your security, reliability, and stability needs.

Are you looking for a reliable way to test your applications? Look no further than the AAA pattern.

The AAA pattern stands for:

1. Arrange
2. Act
3. Assert

This pattern helps you structure your tests in a clear consistent manner, and it is not tied to a particular programming language or testing tool, making it a versatile and effective approach to testing opens a new window .

Have you ever tried to update a Rails app from 5.2 to 6.0 opens a new window , or from 6.0 to 6.1 opens a new window ? If so, you might have seen this deprecation:

DEPRECATION WARNING: Dangerous query method (method whose arguments are used as raw SQL) called with non-attribute argument(s): "random()". Non-attribute arguments will be disallowed in Rails 6.0. This method should not be called with user-provided values, such as request parameters or model attributes. Known-safe values can be passed by wrapping them in Arel.sql(). (called from ...)

Note: While this deprecation message mentions Rails 6.0 as the version where the behavior is disallowed, that change was postponed, so the deprecation also shows in Rails 6.0. The behavior is actually disallowed in Rails 6.1.

What does this deprecation mean exactly? In this article, I will explain that in plain English, what issue it is trying to prevent, and how to fix the problem if you come across it in your codebase.

Recently I got to work on a task that included understanding how to test JavaScript requests with RSpec opens a new window . One thing that I found missing during my time researching solutions was organized and detailed documentation explaining the solutions based on the version of Rails opens a new window and RSpec the application runs on.

Ruby on Rails opens a new window is a popular web application framework that is constantly evolving with new versions being released frequently. While upgrading to a newer Rails version can bring new features, better performance, and security patches/improvements, it can also be a challenging task.

In this blog post, we will discuss 7 common mistakes made while doing Rails upgrades opens a new window and how to avoid them.