title: yii cgridview input text and select filter is disabled
body: <p>[EDIT]
  There are just some js code that I used for sorting that disables the selection the div container.</p>
  
  <p>I am using the Yii cgridview to show my data. But I cannot type into the input text field and cannot select from the select/dropdown, these are the filter options on the cgridview. By the way, the data is from a view, not a from a regular table.</p>
  
  <p>Below are codes on my controller,</p>
  
  <pre><code>$request = new Request;
  $request-&gt;unsetAttributes();
  
  if(isset($_GET['Request'])
   $request-&gt;attributes=$_GET['Request'];
  
  $this-&gt;render('index', array(
              'request' =&gt; $request,
          ));
  </code></pre>
  
  <p>Below are the safe fields on the model,</p>
  
  <pre><code>array('request_id, facility_id, client_id, status, description, submitted_by, submitted, acknowledge, req_type', 'safe')
  </code></pre>
  
  <p>Below are the codes on the model search method</p>
  
  <pre><code>function setRequests(){
  
  $criteria = new CDbCriteria;
  $criteria-&gt;compare('req_type',$this-&gt;req_type, true);
  $criteria-&gt;compare('description', $this-&gt;description, true);
  $criteria-&gt;compare('status', $this-&gt;status, true);
  
  return new CActiveDataProvider($this, array(
           'criteria' =&gt; $criteria,
            'pagination'=&gt;array('pageSize'=&gt;5),
          ));
  }
  </code></pre>
  
  <p>Below are the codes on the view file.</p>
  
  <pre><code>$this-&gt;widget('zii.widgets.grid.CGridView', array(
              'id'=&gt;'request-clist',
              'dataProvider'=&gt;$request-&gt;setRequests(),
              'filter'=&gt;$request,
              'columns'=&gt;
              array(
                      array('name'=&gt;'req_type', 
                          'header'=&gt;'Item',
                          'value'=&gt;'CHtml::link($data-&gt;req_type, array($data-&gt;url));',
                          'type'=&gt;'raw',
                          'filter' =&gt; CHtml::dropDownList('Request[req_type]',
                          $request-&gt;req_type, 
                          array(
                              'Notice' =&gt; 'Notice',
                              'FAR' =&gt; 'FAR', 
                              'PC' =&gt; 'PC',
                              'EM'=&gt;'EM',
                              'RH'=&gt;'RH'),
                          array('empty' =&gt; '(Select)'))
                          ),
                      array('name'=&gt;'description', 
                          'header'=&gt;'Description',
                          'filter'=&gt;CHtml::textField('Request[description]',$request-&gt;description)),
                      array('name'=&gt;'status',
                           'header'=&gt;'Status',
                           'filter'=&gt;CHtml::textField('Request[status]',$request-&gt;status)),
              ),
      ));
  </code></pre>
  
  <p>Are there some things I miss?</p>