title: Rails - I need a checkbox to change a field in the DB
body: <p>I know I have done this before, but for the life of me I can't figure it out.</p>
  
  <p>I have a table with a "called" field in it. I need to use a checkbox to update the db and check if "called" is "true" or not. Doesn't need to be AJAX, just needs to update the field.</p>
  
  <p>table: rsvp
  field: called</p>
  
  <p>Thanks a ton.</p>