title: Who is responsible for deleting the PostImages? The PostsController or the PostImagesController?
body: <p>This question is about a concept in MVC:</p>
  
  <p>Supposing I have two basics entities in my system: the <code>Post</code> that has many <code>PostImage</code> (a 1:N relation).</p>
  
  <p>At certain moment, I'm editing a <code>Post</code> and I want to delete some <code>PostImage</code>. </p>
  
  <p>Here is my doubt: which <code>Controller</code> is responsible for performing the action to delete the <code>PostImage</code>?</p>
  
  <p>a) The <code>PostsController</code> (the <code>PostImage</code> only exists inside the <code>Post</code>) ?<br>
  b) The <code>PostsImageController</code>?<br>
  c) Both are correct choices.</p>
  
  <p><em>Note: I'm using CakePHP, but I think this is irrelevant because MVC is a concept, right?</em></p>