Using Bootstrap in your application has become much more simple. Also learn to create some helper methods to make working with Bootstrap much easier.

The routes file can grow to be unmaintainable and messy. Learn to keep things organized by extracting out blocks of routes into their own files.

Mountable Engines are a great way to extract code into its own namespace and allow the code to be reused in other applications. Other popular gems that are mountable engines are Devise and Doorkeeper.

When displaying a count of records, this will generate extra SQL Queries. Learn how to reduce the number of SQL queries called with counter caching the number of associated records.

Extend your image upload functionality with JCrop. Learn to redirect the user to a crop page once they have uploaded their image and save versions of the cropped images.

Chosen is a jQuery plugin that makes long, unwieldy select boxes much more user-friendly. Learn how to use Chosen in a few different ways in this episode; Rails form builder and Simple Form.

Using Interact.js to create draggable and droppable items in our view, we can use AJAX callbacks on events to interact with our Ruby on Rails application. Also, learn how to use Ruby Assets to manage our Javascript Libraries.

Sometimes you may find yourself with an application that has javascript that needs to execute only on a specific page. This episode lays the foundation to easily manage page specific javascript.

When displaying a significant number of records, it is often a basic functions in a web application is to paginate the records and load them as requested.

Developing a Ruby on Rails application on Windows can be difficult, but doesn't have to be with Docker. Learn how to use Docker to create isolated containers and get them to talk with the Rails app and passed through to the local computer.