title: How to add extra field data to a form field in Wtforms
body: <p>I am trying to add extra data to a form field in wtforms.</p>
  
  <p>I have to create a text field which has an associated unit with it (eg - meter/sec). How do I add the meter/sec string to the form field?</p>
  
  <p>Is there any way to pass a dictionary or something to add data to the field that i can access in the template?</p>