title: Ember data related model does not display in template
body: <p>In the process of learning ember, and I'm not seeing where I'm going wrong. Any data I attempt to call from my related 'txplan' model will not render. I suspect my problem is with my route, and likely I'm doing something ridiculous. Any advice would be greatly appreciated. I do not currently see a call even attempted to the txplan API. Code / data is below</p>
  
  <p>model/pat</p>
  
  <pre><code>const {
  attr,
  hasMany
  } = DS;
  
  export default DS.Model.extend({
  
    txplans: hasMany('txplan', { async: true }),
  
    pat: attr('number'),
    fname: attr('string'),
    lname: attr('string'),
    FullName: attr('string'),
    birthdate: attr('date'),
    email: attr('string'),
    hasins: attr('string'),
    estbalance: attr('number'),
    imagefolder: attr('string'),
    NextAppt: attr('date')
  
  });
  </code></pre>
  
  <p>model/txplan</p>
  
  <pre><code>const {
  attr,
  belongsTo
  } = DS;
  
  export default DS.Model.extend({
  
    pat: belongsTo('pat', { async: true }),
  
    treatmentplannum: attr('number'),
    heading: attr('string'),
    dateTP: attr('date'),
    proccode: attr('string'),
    descript: attr('string'),
    fee: attr('number')
  
  
  });
  </code></pre>
  
  <p>route/pat</p>
  
  <pre><code>import Route from '@ember/routing/route';
  
  export default Route.extend({
    model() {
     return this.store.findAll('pat');
    },
  
   setupController(controller, model)
   { Ember.set(controller, 'pat', model) }
  
  });
  </code></pre>
  
  <p>template (email will display, heading and fee will not. I've been trying both post.value and post.txplan.value.</p>
  
  <pre><code>{{#each pat as |post|}}
  {{post.email}}
  {{post.heading}}
  {{post.txplan.fee}}
  {{/each}}
  </code></pre>
  
  <p>Data/pat</p>
  
  <pre><code>{"status":200,"error":null,"pats":
  [{"id":1,"pat":1,"fname":"Test","lname":"User","FullName":"Test 
  User","birthdate":"1980-11-22,"email":"testuser@test.com","hasins":"I","estbalance":0,
  "imagefolder":"TestUser1","NextAppt":null}
  </code></pre>
  
  <p>Data/txplan</p>
  
  <pre><code>{"status":200,"error":null,"txplan":
  [{"id":1,"treatplannum":3,"pat":1,"heading":"Active",
  "dateTP":"2018-02-23","proccode":"T4528","descript":"Amalgam-1 
  Surf","Fee":70,"priority":0}
  </code></pre>