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Rails Database Migrations Cheatsheet
The database schema evolves continuously. Rails migrations is a powerful and flexible way to update the schema without dropping and re-creating the database. However, all this power and flexibility can be overwhelming. Here's a handy cheatsheet for most common migration operations.
August 31, 2023
Practical Stimulus: Building a Counter Component
In this article, we will build a counter component using the Stimulus JavaScript library. This simple example will demonstrate a bunch of useful features of Stimulus such as managing state, handling events, and targeting DOM elements.
August 23, 2023
Ruby's Hash is a Swiss-Army Knife
A Hash is a built-in data structure in Ruby that maps values to keys and has a constant-time O(1) lookup. This article shows the capabilities of this simple, but equally powerful tool. We’ll start with the basics but also cover some obscure but equally useful features of hash.
August 20, 2023
Abbrev: A Hidden Ruby Gem
The Abbrev module in the Ruby standard library helps you find out all the possible and unique abbreviations for one or more strings. In this post, we'll learn how it works along with a practical example. We'll also take a peek behind the scenes to see how it's implemented.
August 16, 2023
Using Zeitwerk Outside Rails
Did you know you can use Zeitwerk outside Rails? This article shows how to use the Zeitwerk gem to autoload classes and modules in a Ruby app that's not using Rails. We'll also learn how Rails configures Zeitwerk internally and introduce the concept of models in our no-rails Ruby web application.
August 12, 2023
How to Implement Content Security Policy in Rails
This article shows how to implement content security policy in your Rails applications to protect against cross-site scripting (XSS) vulnerability. We'll also learn how you can report CSP violations without enforcing the policy and make exceptions for inline scripts with nonce attributes.
August 09, 2023
You Don't Need Rails to Start Using Hotwire
Although Hotwire is closely tied to Ruby on Rails, you might be surprised to know that you don't really need Rails to learn, play, and experiment with Hotwire. In this article, we'll build a simple static site that uses Turbo Drive + Frames to make it responsive and use Streams to make it dynamic.
August 06, 2023
Content Security Policy (CSP): What Every Web Developer Must Know
This is a comprehensive guide to Content Security Policy (CSP). If you build websites for a living, CSP is an important concept to know, understand, and implement to protect your users from Cross-Site Scripting (XSS) Injection attacks. This post covers (almost) everything you need to know about CSP.
August 03, 2023
Logging in Ruby: (Almost) Everything You Need to Know
Like backups, logging is one of those topics that seems unnecessary until something goes wrong! It's very frustrating to fix a bug that's only reproducible in production without having any logs to help you debug it. This post covers the basics of logging in Ruby and adds logging to our no-rails app.
July 30, 2023
Serving Static Files in Ruby
This is the fourth article in the series where we build a simple, yet complete web app in plain Ruby, without using Rails to better understand how Rails works. In this article, we'll learn how to serve static files in plain Ruby, without using Rails.
July 30, 2023
