title: Flask-Admin Many-to-Many field display
body: <p>I develop an application using Flask. I use Postgres db (psycop2), SQLAlchemy and Flask-Admin for admin interface. And I got a problem and can't find a solution. I have many-to-many relationship between articles and tags tables it's clear. In the Flask-Admin interface when I try to add a tag to articel (or vise versa) it works fine. But it displays awfully and it impossible to choose correct tag because it displays like an object: <img src="https://i.stack.imgur.com/pAQxT.png" alt="enter image description here"></p>
  
  <p>And that is right because it is an instance of my model class. But how can I display here only a value of single field from that model? I really don't know how to do that. Is there any parameter for such kind of "form field" in the admin interface? I can find nothing. I hope that sombody know the solution.</p>
  
  <p>Thanks for your help!</p>