Unobtrusive jQuery with Rails 3

• 1.4

• 1.4.1

• 1.4.2

Add this line to your Gemfile:

gem 'jquery-rails'

Run this command:

$ rails generate jquery:install # --ui if you want jQuery UI

Download jQuery from docs.jquery.com/Downloading_jQuery and put the file in public/javascripts. For example, the file might look like:

public/javascripts/jquery-1.4.2.min.js

Copy rails.js from github.com/rails/jquery-ujs/raw/master/src/rails.js into public/javascripts - overwriting the prototype one (you can also delete the other prototype files if you don’t need them for anything else.)

Switch the javascript_include_tag :defaults to use jquery instead of the default prototype helpers. Uncomment following line from file config/application.rb

config.action_view.javascript_expansions[:defaults] = %w(jquery rails application)

$ gem install bundler
$ bundle install

$ bundle exec ruby test/server.rb

Visit localhost:4567 and all the tests should pass.

At the top of the page you will see links to jQuery 1.4.1 and 1.4.2 . By clicking on those links you will be executing the tests against the clicked version of jquery. By default test uses jQuery 1.4.2 .