title: Need to make full names in cakePHP
body: <p>If I have a person model with <code>first_name</code> and <code>last_name</code>, how do I create and display a <code>full_name</code>?  I would like to display it at the top of my Edit and View views (i.e. "Edit Frank Luke") and other places.  Simply dropping echoes to <code>first_name</code> and <code>last_name</code> isn't DRY.</p>
  
  <p>I'm sorry if this is a very simple question, but nothing has yet worked.</p>
  
  <p>Thank you,
  Frank Luke</p>
  
  <p>Edit for clarity: Okay, I have a function on the person model.</p>
  
  <pre><code>function full_name() {
      return $this-&gt;Person-&gt;first_name . ' ' . $this-&gt;Person-&gt;last_name;
  }
  </code></pre>
  
  <p>In the view, I call </p>
  
  <pre><code>echo $person['Person']['full_name']
  </code></pre>
  
  <p>This gives me a notice that I have an undefined index.  What is the proper way to call the function from the view?  Do I have to do it in the controller or elsewhere?</p>