How to build a complete, real-world application from scratch with Ruby on Rails step by step.
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Ever wanted to restrict user registrations to an account's work email or corporate email domains in your Rails app? It's a lot simpler than you might think.
The Rails generator helpers have always been a little lacking in flexibility. While building the Madmin gem, I ran into an issue with the route generator and decided to take the extra time to contribute back to Rails.
Flash messages are typically a simple string saying something succeeded or failed. What if we wanted to add buttons like you see in most applications? It's easier than you might think!
It's a common situation that we need to submit complex data in our forms in our Rails apps. We'll explore how can we transform the simple values browser forms allow and convert them into something Rails can use and transform into Ruby objects.
Row-level multitenancy is an easy, scalable approach to restricting access to data in your application between tenants. Using the acts_as_tenant gem, we can enforce this automatically throughout our Rails applications.
Building a gem can be complicated. Often times you're writing abstract, meta code so it can be used flexibly in situations you'll never imagine. We'll talk about the architecture and design of the noticed gem and how it all works.
User mentions in group chat is a crucial feature, so this week we're taking a look at how to add @ mentions for our users in chat with regex and more.
It's important to see that there are unread messages in channels you're not actively viewing. We can use a very simple event in ActionCable to do this and bold channel names with unread messages.
One fantastic way to improve Rails performance is by using Etags to help the browser keep track if a page has changed or not. This can help Rails skip rendering views entirely and save lots of time.
Contribute to Rails by discovering something you could improve and learning how to add features to Rails
Webpack bundles can be confusing as to what actually ships in production. Using the bundle analyzer plugin, we can visualize and see exactly what libraries and files are taking up what space.
Keeping track of a user's last read timestamp for each chat room is straightforward, especially when we use Stimulus.js to update it from the client side.
Using the Intersection Observer API, we can refactor our infinite scroll example to be much more efficient and simpler to use
An updated version of our Group Chat series using Webpacker, ActionCable, Stimulus.js, and modern Javascript to build a very clean version of realtime group chat in Rails
Scroll events in Javascript can happen quickly. We want to make sure we don't request the same page multiple times which we can solve easily by introducing a little throttling.
Sometimes you might want to keep track of all classes a module was included in. We can do that with a couple nifty tricks to make this work with both regular Ruby modules and Rails concerns.
Webpacker provides some nice tools for loading Javascript in several different ways. We're looking at require.context to see how to load an entire directory's set of files easily.
Testing file uploads can be tricky, but Shrine makes both file uploading and testing a lot easier than you might expect.
Learn how to test ActiveStorage file uploads and create fixtures with ActiveStorage attachments
If we want to add realtime tracking of which users are online, we can use active websocket connections through ActionCable to keep track.
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