title: Adding an input field to primary key in CakePHP
body: <p>I'm new to CakePHP and still really have  no thorough understanding. if I have a mysql database with only a primary key field how can I make an input field for it using cake bake option.
  After baking I tried adding this line to the view file generated</p>
  
  <pre><code>&lt;fieldset&gt;
  &lt;legend&gt;&lt;?php echo __('Add Id'); ?&gt;&lt;/legend&gt;
  &lt;?php
          **echo $this-&gt;Form-&gt;input('identity');**
  ?&gt;
  &lt;/fieldset&gt;
  </code></pre>
  
  <p>It did not work ...
  What is the correct method to get an input field for the primary key?</p>
  
  <p>The table id has only one field named identity in the data base</p>