Most of the features from rasputin were merged in to official ember-rails gem. I will discontinu support to all the ember related stuff in rasputin. You should start to migrate to ember-rails. The sprocket extention to use require is going to stay in rasputin.

If you use Rasputin for Ember.js integration with Rails 3.1 assets pipeline you should use ember-rails gem.

Rasputin provide a preprocessor for javascript that let you use "require" directive in your files:

require('jquery');
require('ember');
require('ember-data');
require('app/**/*');

Here is the two available settings :

config.rasputin.enable = true
config.rasputin.strip_require_directives = true

In Gemfile:

gem 'rasputin'

0.16.0

• All Ember.js related stuff has moved to ember-rails

0.15.0

• Update to Ember.js 0.9.6

0.14.1

• Precompilation fix

0.14.0

• Update to Ember.js 0.9.4

0.13.2

• Rails 3.2 support

0.13.1

• fix to ensure rasputin is initialized in all groups (thanks @chrisconley)
• update ember-data

0.13.0

• new preprocessor for "javascript native require" (WIP)
• remove legacy packages

0.12.1

• new precompiler (borrowed from @keithpitt)
• default behavior is to precompil only in production environment
• haml filter (thanks @ootoovak)

0.12.0

• replace ember-datastore with ember-data

0.11.3

• update Ember.js to 0.9.3 and clean up ember-datastore

0.11.2

• update Ember.js to latest master

0.11.0

• renaming to Ember.js

0.10.3

• update sproutcore to latest master
• update Handlebars compiler (thank's to @MichaelRykov)

0.10.1

• update with built in metamorph

0.10.0

• add sproutcore-routing
• update sproutcore to master (with metamorph)

0.9.1

• you can change templates naming scheme in your configuration
• add .hbs extention support

0.9.0

• add support for Handlebars precompilation (thanks to @SlexAxton)
• add slim filter
• change templates naming scheme, use '/' instead of '_'

0.8.2

• rails 3.1 support
• fix sproutcore-touch

0.8.1

• add normalize.css

0.8.0

• remove unofficial packages. Prepare for more stable releases in sync with upstream.
• sproutcore-jui will move in to it's own gem

0.7.1 :

• add sproutcore-touch

0.7.0 :

• add sproutcore-bricks

0.6.0 :

• update to lates sproutcore 2 (beta3)
• lots of fixes for sproutcore-jui