title: Update model field in Django with button click on a template
body: <p>I am new to Django and I am having some troubles with my first web application.</p>
  
  <p>My idea is to show a template on user first login with some information about the web. The template contains an "accept button" and a "continue to the webpage" button. This template should appear everytime the users login, until they click on the accept button. </p>
  
  <p>I have created a new model with userID, a boolean field (terms_accepted) and a date field (terms_accepted_date) to control if the users have accepted the information, and the date when they have done so. What I want is to update the terms_accepted (from False to True), when the users click on the accept button.</p>
  
  <p>Is there a simply way to modify the model from the template? I have created the correct flow, because If I modify manually the terms_accepted field from the admin site, when I enter to the page I don't see the template with the information. However, I don't know how to update the field automatically on button click.</p>
  
  <p>Thanks</p>