title: How to get associated polymorphic objects in rails 5?
body: <p>In my Post model, I have</p>
  
  <pre><code>has_many :followers
  </code></pre>
  
  <p>In my Follower model, I have</p>
  
  <pre><code>belongs_to :model
  belongs_to :owner,polymorphic: true
  </code></pre>
  
  <p>In my User and Admin devise models, I have</p>
  
  <pre><code>has_many :followers,as: :owner
  </code></pre>
  
  <p><strong>Requirement:</strong>  I want to have something like <code>Post.owners</code>  and it should return me a list of all users and/or admins that are following this post.</p>