title: Ruby on rails convention for naming date/time fields
body: <p>I want to make a scaffold like this:</p>
  
  <pre><code>rails generate scaffold Job started_at:datetime completed_at:datetime price:decimal paid_at:datetime estimated_completion_at:datetime comment:text
  </code></pre>
  
  <p>I've added "_at" to the datetime fields because that seemed to be the convention as rails timestamp fields are either "_at" for datetime or "_on" for date. But is this actually a convention? Is it OK if I just have "paid" instead of "paid_at" and "completed" instead of "completed_at"?</p>
  
  <p>I really want to get this right from the start. I've been programming in c# for years but I'm new to ruby on rails. I like all the conventions and I want to make sure I'm doing this the proper 'rails way'.</p>