title: Get prefill input value ionic angular
body: <p>I retrieve some data on init from an API and display them in my view to prefill some fields.</p>
  
  <p>I'm a form view which contains : </p>
  
  <pre><code>&lt;ion-textarea formControlName="job_description" class="form-control desc" value="{{resDesc?.job_description}}"&gt;&lt;/ion-textarea&gt;
  </code></pre>
  
  <p>And when I submit the form, I try to get datas with : </p>
  
  <pre><code>this.form.get('job_description').value
  </code></pre>
  
  <p>And it's always null... Except if I write something in the field.</p>
  
  <p>What should I do ?</p>
  
  <p>Thanks</p>