Rails Examples¶ ↑

Rails Examples is a Rails 3.0 (pre) application that has a bunch of examples showing the use of various new Rails Plugin API.

Currently, each of the files inside of app/models is a class that exercises a single aspect of the Active Model API.

The example models are meant to be minimalistic implementations, and try also to only use one aspect of Active Model at a time. Sometimes this is not possible, for example, ErrorsPerson shows how to use the ActiveModel::Errors class, but also uses ActiveModel::Naming.

This repository is a full Rails 3.0 (pre) application. The intention is to add more and more self contained examples to this as we go, showing how to use Active Model.

You can interact with this application from the Rails console after cloning it from Git and vendoring the latest version of Rails like so:

git clone git://github.com/mikel/rails-examples.git
cd rails-examples
git clone git://github.com/rails/rails.git vendor/rails
gem bundle
ruby script/console

You should then be able to test out the new Active Model examples as per the Active Model docs:

light = TrafficLight.new
light.current_state         #=> :red
light.change_color!
light.current_state         #=> :green

person = ErrorsPerson.new
person.validate!
person.erros.full_messages  #=> ["name can not be nil"]

person = DirtyPerson.new
person.changed?             #=> false
person.name = "Mikel"
person.changed?             #=> true
person.changes              #=> {"name"=>[nil, "Mikel"]}

Feel free to fork and commit!