title: Validating a field that does not exist in the database
body: <p>Can i model validate a field that dose not exist in the database.   It's not working for the following code</p>
  
  <p>Model</p>
  
  <pre><code>'agree' =&gt; array(
      'comparison' =&gt; array(
              'rule' =&gt; array('comparison', 'equal to', 1),
              'message' =&gt; 'Accept the Proposal',
              'allowEmpty' =&gt; false,
              //'required' =&gt; true,
              //'last' =&gt; false, // Stop validation after this rule
              //'on' =&gt; 'create', // Limit validation to 'create' or 'update'  operations 
      ), 
  ),
  </code></pre>
  
  <p>.
  view</p>
  
  <pre><code>&lt;div class="input checkbox"&gt;
  &lt;input type="hidden" name="data[Season][agree]" id="SeasonAgree_" value="0"&gt;
  &lt;input type="checkbox" name="data[Season][agree]" value="1" id="SeasonAgree"&gt;
  &lt;label for="SeasonAgree"&gt;&lt;/label&gt; Seasons Proposal displayed is correct
  &lt;/div&gt;
  </code></pre>