title: downgrading rails 4 to 3.2
body: <p>I have the Rails 4.0.0.beta1 installed but I need downgrade to Rails 3.2.13.</p>
  
  <p>I've used <code>gem install rails 3.2</code> but Rails continues as 4.0.0.beta1.</p>
  
  <p>I searched existing doubts and try to follow the answers however none worked for me.</p>
  
  <p>Think this is a simple doubt and I need to solve.</p>
  
  <hr>
  
  <p>This answer my question: <a href="https://stackoverflow.com/questions/6148308/set-rails-version-as-default">How to set default rails version for a project?</a></p>