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Active Model Serializers
The ActiveModel::Serializers gem can help you build JSON APIs through serializer objects. This provides a dedicated place to fully customize the JSON output.
(10 minutes)
Nested Model Form Part 1
Handling multiple models in a single form is much easier with the accepts_nested_attributes_for method. See how to use this method to handle nested model fields.
(11 minutes)
Nested Model Form Part 2
Add and remove nested model fields dynamically through JavaScript using either Prototype or jQuery.
(12 minutes)
Public Activity
Learn how to easily add a user activity feed using the public_activity gem. Here I show both the default setup using model callbacks and a manual way to trigger activities.
(10 minutes)
Active Model
In Rails 3 the non-database functionality of Active Record is extracted out into Active Model. This allows you to cleanly add validations and other features to tableless models.
(6 minutes)
Tableless Model
If you want to create a model without a database backend, you simply need to define a couple methods in the model like I show in this episode.
(8 minutes)
Fast Rails Commands
Rails commands, such as generators, migrations, and tests, have a tendency to be slow because they need to load the Rails app each time. Here I show three tools to make this faster: Zeus, Spring, and Commands.
(8 minutes)
ActiveAttr
ActiveAttr provides what Active Model left out. If you need to create a table-less model with features similar to Active Record, watch this episode.
(5 minutes)
Facebook Authentication
This will show how to create a new facebook application and configure it. Then add some authentication with the omniauth-facebook gem and top it off with a client-side authentication using the JavaScript SDK.
(12 minutes)
What's New in Rails 4
Rails 4.0 is still unfinished, but it is shaping up to become a great release. Here I show how to setup a new Rails 4.0 (edge) application and walk through many of its new features.
(20 minutes)