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A Deep Dive Into Database Migrations in Rails

Like source code, database schema changes and evolves over time. Migrations are a feature of Active Record that allows you to manage the database schema
4 min read

Attributes API in Rails

Sometimes, you want to set default values on your ActiveRecord objects and convert them to a different type. Rails provides a handy attribute method that
1 min read

How to Get the Current Absolute URL in Rails

Every Rails controller includes two accessor methods pointing to the request and the response objects associated with the current HTTP request cycle. The request method
1 min read
Rename Database Column in Rails

How to Rename a Database Column in Rails

Solution 1: Undo Last Migration If it is a simple typo in the last migration, use the db:rollback command to undo the last change.
2 min read
Rails Controller Hierarchy

Metal Controller in Rails

The ActionController::Base class is the great-grandfather of all Rails controllers, but doesn't get much attention. In this post, we will examine this Metal class and how it works. We'll also trace the path of an incoming HTTP request to Rails controllers.
1 min read
active job framework in rails

Active Job: How Does It Work?

In this article, I explain the journey of a background job, from its creation to execution. We will learn how it’s configured and enqueued, and how an adapter invokes it. We will also see the different ways to configure a job.
1 min read

Up and Running with Minitest

I love minitest. Minitest is simple. There’re a few ways to write tests, and they are so intuitive. I learned it last year, when
1 min read
&method shortcut in ruby

Ruby Shortcut to Call a Method with Each Array Item as Parameter

As a Ruby programmer, you probably know the &: shortcut to call a method on each item in an array. For example, this snippet will
Ruby Gems 2 min read

How to Manage Environment Variables in Rails

Now you might think it’s so easy to access them using the ENV hash. Why do we need a different way? Well, a very
1 min read

Useful Linux Commands

Learning the Linux command line, like becoming an accomplished pianist, is not something that we pick up in an afternoon. It takes years of practice.
3 min read

Running a Single Test with Spaces in Minitest

In Rails, if you want to run a specific test without the others in the file, you can pass the method’s name to the
1 min read

How to Convert a Ruby Object to Hash

Let’s say you have a Product object with properties @name = "Table" & @price = 10. What’s the best way in Rails to
1 min read

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