Question

To avoid crashing anything I specify the version number for every gem in my Gemfile:

gem 'sass-rails',   '~> 3.1.5'
gem 'coffee-rails', '~> 3.1.1'
gem 'uglifier', '~> 1.0.3'
gem 'haml-rails', "~> 0.3.4"
gem 'simple_form', '~> 1.5.2'

But I want to, at least, know if there are some newer version I haven’t installed. For instance, simple_form 2.0.0 has been released.

I can check each gem on RubyGems, but there must be a automatic tool to do this chore, right?

Answer 1

With the latest version (1.1) of bundler you can do bundle outdated (see this page.)

To update bundler to the latest version you can run gem update bundler

gazler@gazler-laptop:~/development/rails/livestax$ bundle outdated
Fetching gem metadata from http://rubygems.org/.......
Fetching gem metadata from http://rubygems.org/..

Outdated gems included in the bundle:
  * multi_json (1.2.0 > 1.0.3)
  * activesupport (3.2.3 > 3.1.0)
  * activemodel (3.2.3 > 3.1.0)
  * rack (1.4.1 > 1.3.5)
  * rack-cache (1.2 > 1.0.3)
  * sprockets (2.4.0 > 2.0.3)
  * actionpack (3.2.3 > 3.1.0)
  * mime-types (1.18 > 1.17.2)

There is also the Gemnasium but I have never used it.