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To-do List

Let's Learn Ruby on Rails + Hotwire by Building a To-Do List

In this article, we'll learn Ruby on Rails and Hotwire by building a to-do list from scratch. It shows how to build single-page web applications using traditional web architecture (server-rendered HTML), without the complexity of modern JavaScript frameworks like React.
Hotwire 25 min read
Undo generate scaffold command in Rails

How to Undo Generate Scaffold Command in Rails

Rails offers the convenient `rails destroy` command to undo the effects of any `rails generate` command. Also, don't forget to rollback the migration, if you have already applied it.
2 min read
Different forms of the self keyword

How self Keyword Works in Ruby

Ruby's self keyword can be pretty confusing to understand, especially if you're new to Ruby. Not understanding it often leads to subtle programming bugs that can be difficult to debug. This post explains how it works under common, everyday situations.
Ruby Gems 2 min read
Setting Up Development Environment for Rails

Setting Up Development Environment for Rails

This is the second article in the series on building awesome web applications with Ruby on Rails. It shows how to set up a kick-ass development environment for building Rails apps.
5 min read
Define new routes using member and collection blocks

Define Custom Routes Using the Member and Collection Blocks in Rails

Let's say you want to add non-resourceful custom routes on your controller. Most often, you're better off by introducing a new resourceful controller. However, in those cases where you absolutely have to, you can define new routes using the member and collection blocks provided by the Rails router.
4 min read
How &:method Shortcut Works in Ruby

How &:method Shortcut Works in Ruby

This post shows you how Ruby's `&:method` shortcut works behind the scenes. It's a clever trick that was added first in ActiveSupport and became an official feature in Ruby 1.8.7.
2 min read
Building Web Applications with Ruby on Rails

Building Web Applications with Ruby on Rails

This is the first article in the series on building awesome web applications with Ruby on Rails. It explores why you should build for the web and use a web framework, especially Rails.
4 min read
Blocks in Ruby

Understanding Blocks and the Difference in Proc and Lambda

Update: I've since revised, polished and published a much more in-depth post on this topic, check it out here: Blocks, Procs, and Lambdas:
Ruby Gems 4 min read
String Inquiry

Compare Strings Using Inquiry

Similar to the ArrayInquirer class, which tests if an array contains a value, the ActiveSupport::StringInquirer class provides a nice way to compare two strings.
1 min read

How to Compress a String in Ruby (and Rails)

You can compress large strings using the Zlib module provided by Ruby's standard library.
1 min read
Rails Configurable

Configure Classes Using the Configurable Concern in Rails

Sometimes, you need a config-like property on a class, such as a logger. Rails provides the Configurable concern that lets you accomplish this. It provides
2 min read
how to access variables outside the scope in Ruby

How to Access Variables Outside Scopes in Ruby

In C# and Java, variables from the outer scope are visible to the inner scope. In Ruby, scopes are sharply separated, and nested visibility is
1 min read

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