title: Allow form submission only once a day django
body: <p>I want to allow users to submit a django form once, and only once everyday. After submitting the form, the form wouldn't even show (server-side checkings, I don't want to use JS or client side thing; easily 'tamper-able')</p>
  
  <p>What is the best way to do so in Django?</p>
  
  <p><strong>What I have tried?</strong></p>
  
  <p>I have not tried any yet, however, I've considered this options.</p>
  
  <ul>
  <li>Trigger a boolean field (where? on the form user submit or his/her account?) to change to True, then reset that field to False at midnight</li>
  </ul>
  
  <p>With this approach, I wonder how I can reset the field to False at midnight too.</p>
  
  <p>I asked the same question on <a href="https://groups.google.com/forum/#!topic/django-users/5DPB3nhYDX4" rel="nofollow">Django Users</a>, and a couple of suggestions have come in, so I'm looking into as well</p>