title: How to add field in Token Model in Django Rest Framework Authtoken
body: <p>i'm using rest_framework.authtoken.models Token. i can see 3 fields which is key, created_at and user_id. </p>
  
  <p><strong>Background of App:</strong></p>
  
  <p>I use chrome app as client for app, i want to use token authentication to connect with my APIs in django rest framework. and i want to store user_id and company_id in <strong>authtoken_token</strong> table. so i could store just the token key in chrome app localstorage,</p>
  
  <p><a href="https://i.stack.imgur.com/yGj5p.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yGj5p.png" alt="enter image description here"></a></p>
  
  <ol>
  <li><p>My question is how can i add an extra field like company_id to that model? i couldn't find any docs or articles about this. </p></li>
  <li><p>I've also Jamie's answer in <a href="https://stackoverflow.com/questions/27043349/how-to-use-custom-token-model-in-django-rest-framework" title="this">this article</a> to subclass the model but i don't know how.</p></li>
  </ol>
  
  <p>Thanks!</p>