title: ActiveRecord and sorting on association
body: <p>I have a simple AR association like this:</p>
  
  <pre><code>Question    has_many :answers
  
  Answer      belongs_to :question
  
  with
    `question_id` int(11) NOT NULL,
    `is_accepted` tinyint(1) DEFAULT NULL,
  </code></pre>
  
  <p>in the answer. I'll have only one is_accpeted answer and am wondering if there is an easy to sort that to the top (just an order by)?</p>
  
  <p>thx</p>
  
  <p>Edit:
  here is my Answer class:</p>
  
  <pre><code>class Answer &lt; ActiveRecord::Base
      belongs_to :question 
  end 
  </code></pre>