Rails not using correct version of Ruby

Question

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This is what happens with rails console:

Loading development environment (Rails 3.1.1)
ruby-1.9.2-p290 :001 &         


        

Answer 1

Man, I was having this exact problem and the way I solved it was by reinstalling bundler. It seems that bundler was caching the RUBY_VERSION to 1.8.7.

I'm not using rvm, I had to use this to set the default ruby version:

sudo update-alternatives --config ruby
sudo update-alternatives --config gem

And then, I reinstalled bundler and it worked!

Hopefully you can solve it with this approach