Episodes
Counter Cache Associations
Play
3:54

Counter Cache Associations

#78 May 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
Play
7:00

Cropping Images with JCrop

#77 Apr 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
Play
6:40

Javascript Select Form Fields with Chosen

#76 Apr 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
Play
15:20

Drag and Drop with Interact.js

#75 Apr 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
Play
4:44

Page Specific Javascript in Ruby on Rails

#74 Apr 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.