title: Association mapping with Doctrine
body: <p>I have two Entities:</p>
  
  <p>User and
  Comment</p>
  
  <p>Every comment can only have one user but a user can have multiple comments. </p>
  
  <p>I'm not sure if I want to use biderectional, Unidirectional with Join Table, or Self-referencing. </p>
  
  <p>I only want this relationship to apply when calling the comment object. If I call a user object somewhere I do not want a bunch of comment objects flooding the user object. Which approach should I take?</p>