How to build a complete, real-world application from scratch with Ruby on Rails step by step.
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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.
Sometimes you may need to wrap and reraise an exception. Ruby 2.1+ makes this easy by letting us raise a new error, pass in the old one, and automatically assigns the exceptions "cause" which is the original exception.
Using ensure with blocks is extremely helpful for cleaning up things. We'll learn how to use ensure in Ruby for cleaning up open files as well as temporarily changing values for requests or test stubs.
In this episode, we will be looking into Ruby's eigenclasses or singleton classes. We will first look at singleton methods and then how we can access the eigenclasses of objects.
In this lesson, we will look at the various ways we can use the super keyword in Ruby in regard to forwarding method arguments to the equivalent method in a parent class.
Kicking off our Web Scraper series, we start out with the bread and butter: scraping web pages with Ruby and Nokogiri.
Ruby's __FILE__ and __dir__ work slightly differently with symlinks that you might not realize. Let's check see how it works.
Catching signals from the operating system like Ctrl-C can be very useful for safely shutting down your Ruby process. In this lesson, we'll see how the Rails server catches Ctrl-C and gracefully shuts down.
Last episode, we built a multi-threaded HTTP server from scratch using Ruby. This week, we'll enhance our web server by adding Rack and Rails support.
Designing code for composability allows you to make code more testable, flexible, and easier to adapt in the long term. We'll look at how I recently refactored the Receipts gem so that you can easily customize receipts and still use built-in components.
Errors can come up in many different ways. This episode, we'll look at how we can improve error handling in the noticed gem to cleanly handle issues with ActiveRecord without negatively affecting
Rails uses the Ruby subscript operator to implement versioning with ActiveRecord Migrations. We'll learn how this works and implement it from scratch to see how it all ties together
In this lesson, we will look at how to clean up code that iterates over a collection twice to separate the elements out to only doing so once while achieving the same result by leveraging the partition method from Ruby's Enumerable module.
Ever wondered how Puma, Unicorn, or other Ruby HTTP servers work? We'll build one from scratch with pure Ruby so you can see exactly how it works.
Today we're refactoring Andrew Mason's GitHub Action that runs Rubocop against your repository. We'll pull out some concepts, remove conditionals, and use several other techniques to clean up the code.
In this episode we will look at using Ruby's built-in Net::HTTP class to build API clients for making http requests.
We look at using the built in SimpleDelegator class to easily create decorators for objects.
When you receive a JSON response from an API endpoint, it's really easy to convert this to a Ruby hash. But hashes don't feel very Ruby-ish when you're working with them and you can't add methods and treat them like objects.
The core of an API wrapper Rubygem is defining the Resource endpoints so developers can make requests cleanly. We'll also learn how to handle pagination for endpoints that return a list of results.
The core of any API wrapper is the actions for create, read, update, and delete. We'll implement the CRUD for a resource so you can see how to do it and wire up everything together that we've built so far.
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