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gem x
Rollout and Degrade
Learn how to use the Rollout gem to deploy a feature to a select group of users and the Degrade gem to automatically disable it upon failure. Also included is a way of doing this from scratch.
(13 minutes)
MiniTest with Rails
MiniTest is a fast and lightweight testing library. Here you will learn how to use it in a Rails app for model, helper, and integration testing. The Turn gem is also demonstrated for prettier test output.
(15 minutes)
Receiving Email with Mailman
The Mailman gem makes it easy to receive email in a Rails application. Here I show how to write a script to run Mailman in its own process and pull down mail from a POP3 account.
(11 minutes)
Uploading to Amazon S3
Here I show how to upload files directly to Amazon S3 using CarrierWave Direct and Fog. I then walk through another project which uses jQuery File Upload to handle multiple files and does not use CarrierWave.
(14 minutes)
Exploring RubyGems
RubyGems can make it easy to add a feature to a Rails application, but it can also cause headaches down the road. Here I give some tips on researching gems to decide which one to choose, or when to do it from scratch.
(7 minutes)
Ember Part 1
Ember.js is a javascript framework for making rich client-side applications. In the first part of this two part series I show how to setup templates, controllers, and routes.
(15 minutes)
Debugging Ruby (revised)
This episode will show you how to debug a rails app using the "debugger" gem: set a breakpoint, inspect variables and change the executed code at runtime.
(7 minutes)
Queue Classic
PostgreSQL can act as a worker queue which can replace the need for a separate process to manage the background jobs. Here you will learn how to do this with the queue_classic gem.
(8 minutes)
Importing CSV and Excel
Allow users to import records into the database by uploading a CSV or Excel document. Here I show how to use Roo to parse these files and present a solution for validations.
(10 minutes)
Passing Data to JavaScript
There are a variety of ways to pass variables from a Rails application to JavaScript. Here I show three techniques: a script tag, a data attribute, and the Gon gem.
(6 minutes)