Asset pipeline Configuration for Rails 4. Can someone explain why my Rails 4 has no sprocket-rails gem?

Question

I've read on the ruby on rails guide, that the asset pipeline is a thing of the past and that starting with rails 4, assets will be handled by the sprockets-rails gem. That's great and all but here's my problem. This is the internals of a rails app I've made.

gem 'rails', '4.1.0'

# Use sqlite3 as the database for Active Record
gem 'sqlite3'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',  platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'

# Turbolinks makes following links in your web application faster. Read more:    
https://github.com/rails/turbolinks
gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'

# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc

# Spring speeds up development by keeping your application running in the background.     
Read more: https://github.com/rails/spring
gem 'spring',        group: :development

As you can see, I'm using rails 4.1 but there is no sprocket-rails gem. I'm just curious why this is. Everything works fine but I'd like to know. Thanks.

Kirti Thorat · Accepted Answer · 2014-05-17 18:47:25Z

2

sprocket-rails gem is one of the runtime dependencies of rails gem. You can check it on RubyGems site: Rails Runtime Dependencies

This means that when you run bundle install command, bundler not only installs the gems listed in Gemfile but it also fetches all remote sources, resolves dependencies and installs all needed gems.

Bottom-line is that bundler will take care of the runtime dependencies, you can even check those in your Gemfile.lock(Just search for rails (4.1.0) in the Gemfile.lock).

Refer to the documentation of bundle-install command (mainly DESCRIPTION section)

answered May 17, 2014 at 18:47

Kirti Thorat♦

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