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Episodes

Mountable Engines

Episode #79 5-7-2017 free

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.

Counter Cache Associations

Episode #78 5-1-2017 free

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.

Cropping Images with JCrop

Episode #77 4-23-2017 free

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.

Javascript Select Form Fields with Chosen

Episode #76 4-16-2017 free

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.

Drag and Drop with Interact.js

Episode #75 4-9-2017 free

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.

Page Specific Javascript in Ruby on Rails

Episode #74 4-2-2017 free

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.

Pagination with Kaminari

Episode #73 3-26-2017 free

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.

Intro to Docker on Windows

Episode #72 3-19-2017 free

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.

Nested Forms with Cocoon

Episode #71 3-12-2017 free

Using the unobtrusive gem, Cocoon, learn how to handle multiple models in a single form with accepts_nested_attributes_for.

Nested Forms from Scratch

Episode #70 3-5-2017 free

Learn how to handle multiple models in a single form with accepts_nested_attributes_for and learn how to add and remove nested records through JavaScript.