title: using ember trying to set value in controller from route model hook yields error
body: <p>I have a controller for this route that I have created and everything else in the controller seems to work great. I am trying to pass the meta value to a variable in the controller from the route and I get a console error:</p>
  
  <pre><code>Error: Property set failed: object in path "controller" could not be found or was destroyed.
  </code></pre>
  
  <p>this is the relevant snippet in my route:</p>
  
  <pre><code> model(params){                                                                                                                                                                                                          
     let someVariable = this.store.query('somePath', params);                                                                                                                                       
     someVariable.then((results) =&gt; {                                                                                                                                                                                     
         this.set('controller.totalPages', results.get('meta.page_count'))                                                                                                                                                 
     });                                                                                                                                                                                                                   
     return someVariable;                                                                                                                                                                                                 
   }
  </code></pre>
  
  <p>in the console error the line with the issue is this one</p>
  
  <pre><code>this.set('controller.totalPages', results.get('meta.page_count'));
  </code></pre>
  
  <p>The other interesting snippet is when I sort a row on my data table and make the model request again my 'totalPages' variable finally shows up as expected(with the meta value), its on the initial page load that I dont see it.</p>