title: No value provided for required options '--orm' Rails 3
body: <p>I have been using Rails 2, recently switched to Rails 3. Got a big problem. Every time I try to rails generate a model or a scaffold, it keeps giving me the same error "No value provided for required options '--orm'". If I do rails generate controller newController, it works though. But just for model or scaffold, I can't get rid of that error message. I don't see many people having the same problem. So maybe there's a common Rails 3 setting that I miss here?</p>
  
  <p>My machine is Debian Lenny, and rails version 3.0.7. Also I'm not using any db.</p>
  
  <pre><code>~/projects/rails/contacts$ rails generate model user
  No value provided for required options '--orm'
  </code></pre>
  
  <p>Just for the record, I created another testing app with </p>
  
  <pre><code>rails new test_no_db --skip-active-record
  </code></pre>
  
  <p>Then</p>
  
  <pre><code>rails generate model User
  </code></pre>
  
  <p>Got exactly the same error message:</p>
  
  <pre><code>No value provided for required options '--orm'
  </code></pre>