title: ChoiceField in Django model
body: <p>Suppose I have <code>ChoiceField</code> in my Django model which consist of several choices.</p>
  
  <p>Now, in the future if I changed the existing choice (option) with some other name (choice), will the existing records in the model with that choice (option) also change? Do I need to set that new option manually in the admin page?</p>