title: Can semantic-ui form validation rules on one field be conditional on a different field?
body: <p>Let's say I have a form with two fields. I'd like the following to be possible:</p>
  
  <p>Submit the form empty - Validation succeeds
  Both fields contain data - Validation succeeds
  Field one has data, field two empty - Validation succeeds
  Field one empty, field two has data - Validation fails</p>
  
  <p>Is there a way to do this?</p>
  
  <p>My server code already validates for this, but I'd love to be able to prevent the client from hitting the server if it doesn't have to.. but if that's not possible, is there a way to pass form validation error messages to the form as the page loads?</p>
  
  <p>Thanks!!</p>