title: Accept terms of use rails
body: <p>What is the best way to add a check for accepting terms of use in a rails app?</p>
  
  <p>I can't seem to get <code>validates_acceptance_of</code> working quite right. I added a bool to my user model (was that necessary?). And then have a checkbox that returns either true/false.</p>
  
  <p>I feel like I'm just making a silly little mistake. Any ideas?</p>