title: Text fields in master–detail view show ( "<null>" ... instead of correct value
body: <p>I'm following Aaron Hillegrass's book (trying), and am at the point trying to bind some view cells. I am getting the results in the screen shot below.</p>
  
  <p>The cells on the right side are at least editable. The title cell is not.</p>
  
  <p>I'd appreciate any advice on what I'm doing wrong.</p>
  
  <p>Thanks</p>
  
  <p><img src="https://i.stack.imgur.com/KJ3za.png" alt="enter image description here"></p>