Ruby and Rails applications are awesome on Fly! This is the home for Ruby-oriented content including Rails, Sinatra, Turbo, Rack, and more.
By Brad Gessler
12 min Read
Organic Test Driven Development
Test-driven development sounds like a really “heavy”, dogmatic way of building applications, but it can be surprisingly organic and lightweight starting with “does it run?” as the first test, followed by more formal unit test verification.
When I set
All your favorite social apps have the ability to send you notifications even
when you aren’t even using them. Sending notifications used to require
different mechanisms for different clients, but with
joining the party, now is a good time to
Ruby pattern matching landed in 2.7 via the case … in… statement. It’s a very powerful control structure the can make Ruby code cleaner and easier to read.
In this article we’ll explore the basics of how pattern matching can make your Ruby code more
Take a typical Rails application, run fly launch, then fly deploy, say yes a few times and you will have a Dockerfile provided for you, with two instances of your application up and running, a PostgreSQL database, and an Upstash Redis database.
The RubyKaigi conference was in Matsumoto this year, surrounded by beautiful mountains in Nagano Prefecture. It’s an annual conference in Japan that brings Rubyists from around the world to celebrate Ruby and the community.
I ate a lot of local soba.
Rails has been around since early 2004. Back then, the choices of building web applications was either working with a bunch of spaghetti code that was SFTP'ed up to a server or work with an enterprise monstrosity like Enterprise Java Beans. Rails show
Hacking Rails Implicit Rendering for View Components & Fun
Understanding how Rails handles requests from routes.rb to calling the action method on a controller makes it possible to build Rails plugins ranging from Hanami-like action classes to component-driven Rails development.
Have you ever opened a Rails
Building applications entirely from UI components can be a great way to manage complexity in non-trivial application views, especially when using CSS frameworks like TailwindCSS. It’s a technique that’s been used with great success, by many communitie
How many times have you cursed at a date form field because it rejected 03/01/22 and wanted 03/01/2023? Number inputs are the same—what if instead of copy & pasting from the calculator app you could enter 79 / 2 in a field and have it evaluate to 39.5
Ruby on Rails contains everything you need:
Rendering HTML templates, updating databases, sending and receiving emails,
maintaining live pages via WebSockets, enqueuing jobs for asynchronous work,
storing uploads in the cloud, providing solid securi
GPT-4 can be helpful for beginner and senior Ruby developers, but it does have limitations. It won’t write all of your software for you, but it will point you in a useful direction, especially if you prefer learning by doing.
Let’s look at how well G
MRSK was introduced last month and it truly is a game changer. From the announcement:
It sits on top of basic Docker, and harvests all the benefits you get from isolated containers with a sliver of the complexity associated with most other solution
Little Gestures of Confidence Make Our Tools & Community Better
The world is a much better place when we say “please” and “thanks” as we go about our daily lives. The same should be true for the tools, frameworks, documentation, and code we use in Ruby—and a little effort can go a really long way to build confiden
You’ve been a model developer. You’ve placed your source code under version control and posted it to GitHub. You’ve got a suite of tests, and they run green. You’ve deployed your software to production.
That’s a lot of work. You deserve a break.
Rails 7.1 is adding discoverable health checks, which fly launch will automatically configure and monitor. This page will tell you what you need to know.
No matter how well you plan, you will always need to be prepared to deal with
unforeseen and un
Rails 7.1 is getting an official Dockerfile, which should make it easier to deploy Rails applications to production environments that support Docker. Think of it as a pre-configured Linux box that will work for most Rails applications.
That means you
What are the hazards of Monkey Patching in Ruby? How you can create a Monkey Patch that you can share responsibly and safely with the Ruby community without causing bugs from forgetting to remove the patch.
We live in an imperfect world, which means
There’s been a few interesting blog posts written about single file Rails applications, but they all seem to stop short of describing practical use cases where you might actually ship a single page Rails application.
Problem: I need a lightweight CMS
First, let’s talk about why we decided to use OCI container images in the first place. In short, containers are freaking awesome. They allow us to package up our applications and all of their dependencies into a single, self-contained uni
Fly Machines can boot a VM in 500ms, run a Rails background job, then turn off when it’s done. That means you don’t have to pay for a server to sit idle if there’s no jobs to process and you can have a much more scalable pool of on-demand workers when
Many people see Rails as a framework that will get you to IPO and beyond. I, personally, I’m more interested in the long tail of applications that are used by only a small group of people.
I wrote one such application to schedule heats for ballroom
The Rails asset ecosystem is at peak complexity as it transitions from Sprockets to Importmaps and Propshaft, by way of Webpacker. How does it affect people who build Rails apps? How should Rails plugin developers navigate the transition?
Rails has a
Static websites have exploded in popularity over the past few years. What is it that people like so much about static site generators?
Low operational complexity - Static websites can be deployed to a production environment without the need for a d
If you’ve used your own Rails application from another continent, you may get the feeling that physics has beaten your performance tuning efforts. Page loads feel a bit sluggish, even with all the right database indexes and fancy CDN-backed assets.