title: cakephp how to find belongs to by id
body: <p>Is there a way in cakephp using ORM to get the item that belongs to a specific child item. For example I was to get the related Post record for a specific Comment records.</p>
  
  <p>This is my Comment model:</p>
  
  <pre><code>var $belongsTo = array(
      'Post' =&gt; array(
          'className' =&gt; 'Post',
          'foreignKey' =&gt; 'post_id',
          'conditions' =&gt; '',
          'fields' =&gt; '',
          'order' =&gt; ''
      )
  );
  </code></pre>
  
  <p>I was trying this but it's pull back every post, even those that don't have the comment I'm querying against:</p>
  
  <pre><code>$this-&gt;Post-&gt;contain('Comment');
  $results = $this-&gt;Post-&gt;find('all', array(
      'contain' =&gt; array(
          'Comment' =&gt; array(
              'conditions' =&gt; array(
                  'id' =&gt; 15
             )
          )
  )));
  </code></pre>
  
  <p>Any other way to do this?</p>