title: Display a comma separated list of ManyToMany items in a Charfield on a ModelForm
body: <p>I have a model containing a ManyToMany field to a table "Tags". Since this table could be huge, I don't want to display a select in the form, but a coma separated list of tags, provided by a charfield (I suppose).</p>
  
  <p>On the saving, I would split the list by their comma and then add them one by one (using get_or_create). I already did that.</p>
  
  <p>But when I want to change data, instead of having a list of tags, I have a list of IDs.</p>
  
  <p>How can I display a list of comma separated tags? Do I have to create a new specific Field for that ? or is there already something that do what I'm looking for?</p>
  
  <p>Thanks for your help!</p>