title: FormArray without FormControls and just strings Angular 2
body: <p>I have two string arrays on my backend that I have to fill with either a single string or multiple strings. However they are not key value pairs. I am trying to push a string into one of the arrays but an running into the fact that I do not and cannot specify a control: value pair.</p>
  
  <p>my formArray looks like </p>
  
  <pre><code>collections: new FormArray([]),
  </code></pre>
  
  <p>my html to select the strings</p>
  
  <pre><code>              &lt;md-select placeholder="Collection"&gt;
              &lt;md-option (click)="addCollectionId('one')" value="Local"&gt;Local&lt;/md-option&gt;
              &lt;md-option (click)="addCollectionId('two')" value="Music"&gt;Music&lt;/md-option&gt;
              &lt;md-option (click)="addCollectionId('three')" value="Performing Arts"&gt;Performing Arts&lt;/md-option&gt;
              &lt;md-option (click)="addCollectionId('four')" value="Sports"&gt;Sports&lt;/md-option&gt;
              &lt;md-option (click)="addCollectionId('five')" value="Restaurants"&gt;Restaurants&lt;/md-option&gt;
            &lt;/md-select&gt;
  </code></pre>
  
  <p>and my logic to add the strings to the formArray looks like:</p>
  
  <pre><code>  addCollectionId(id: string) {
  const control = &lt;FormArray&gt;this.createCardForm.controls['collections'];
  control.push(id);
  </code></pre>
  
  <p>}</p>
  
  <p>I am getting the error 'Argument of type 'string' is not assignable to parameter of type 'AbstractControl'.</p>
  
  <p>Since I cannot push a control: value pair and only string/strings how can I push strings to the array while still staying in my overall form?</p>
  
  <p>Any help/tips/suggestions would be much appreciated.</p>