I am developing several rails projects. Some are still rails 2.3.9, and some are rails3. But using those at the same time, on the same machine can cause some trouble. I use bundles for all my projects, so the gem dependencies are managed. But still, somehow, when running my tests, i get into trouble. If i run
spec, it complains that it is deprecated. Rubymine doesn't support running tests in my rails 2 project. The solution? Use gemsets! Gemsets are a feature from rvm, the Ruby Version Manager. But with gemsets rvm does more than just manage your ruby version! A gemset is a set of gems, which you can switch at will. So i am using a gemset per project. Creating a gemset is easy: [ruby] rvm gemset create some_name [/ruby] Using a gemset is equally simple: [ruby] rvm gemset use some_name [/ruby] Showing which gemset is in use: [ruby] rvm gemset name [/ruby] Showing the list of possible gemsets [ruby] rvm gemset list [/ruby] By default, you are using an unnamed gemset, which contains all the gems for your ruby-version. Per project you can create a new gemset. Per gemset you have to re-install your gems, but luckily, using bundler, that is as simple as doing
bundle install. Now comes the good part:
.rvmrcfile in your project-folder containing
rvm default@projecta, every time you
cdinto that folder it will select the default ruby and the projecta gemset. Awesome!