title: Executing custom validation before record created?
body: <p>I want to execute a custom validation before the record is created?</p>
  
  <p>It looks as if this is the right method: before_validation_on_create.  For example:</p>
  
  <pre><code>before_validation_on_create :custom_validation
  </code></pre>
  
  <p>But am not sure.  Any help would be appreciated.</p>