Question

Im having trouble setting up a development environment. I need some tutorial on how to install rvm with rails 3.2 and rails 2.3.14 side by side. I tried installing rvm 1.8.7 then rails 2.3.14 and rvm 1.9.3 then rails 3.2. After finishing I can’t seem to create a gemset and I tried to switch rvm 1.8.7 buy when I generate(ruby script/generate) it showed me that it was not recognized.

Answer 1

Ideally speaking, you would want to create your gemsets before installing the rails gems. This way the two versions are segregated. I would do something like the following:

rvm --create use 1.8.7@some-gemset-name
gem install rails -v 2.3.14

That should install and use those specific versions together. Then for the newer versions

rvm --create use 1.9.3@some-other-gemset-name
gem install rails

Then you would just need to change rubies and gemsets when you need to with rvm use version@gemset-name. Another approach is to have the ruby and gemset change with each rails project by creating a .rvmrc file in the root of your rails project. The contents of that file would be similar to the following:

rvm version@gemset-name

I would also recommend checking out the RVM Docs as this is just the tip of the iceberg when working with RVM.