title: Keywords Field in Django Model
body: <p>I'm beginner in Django. In my model I have a Field named keywords that I want to store keywords in it (separated by comma).</p>
  
  <p>A user may enter a compound keyword <code>"learn Django"</code> or <code>"Django model-Fields"</code>, and also I want to have the possibility to set a <code>max_length</code> for every keyword. And a <code>max ?</code> of keywords!</p>
  
  <p>How can I do this please ?</p>