title: Rails 4.2: Getting "Unpermitted parameters" on user creation after adding `protected_attributes` gem
body: <p>I am upgrading from Rails 3.2 to 4.2 and wanted to follow Ryan Bates' advice of getting things working as quickly as possible before doing any major refactoring.</p>
  
  <p>To that end, I installed the <code>protected_attributes</code> gem because I was under the impression that with this gem installed I wouldn't need to implement the strong params approach in my controllers immediately and could continue using <code>attr_accessible</code> in the models until I have time to refactor.</p>
  
  <p>I'm not getting any errors about <code>attr_accessible</code> itself, but when I try to create a user in development I get <code>Unpermitted parameters: first_name, last_name, phone</code> despite having all of those as arguments in the User model's <code>attr_accessible</code> method.  </p>
  
  <p>Can someone point out what I'm doing wrong here?</p>