title: How to validate sfWidgetFormTextareaTinyMCE
body: <p>I use symfony 1.4.11. And I have next:</p>
  
  <pre><code>$this-&gt;widgetSchema['en']['content'] = new sfWidgetFormTextareaTinyMCE(array(
          'width'   =&gt; 900,
          'height'  =&gt; 300,
            'config' =&gt; 'theme_advanced_buttons1 : "cut, copy, paste, images, bold, italic, underline, justifyleft, justifycenter, justifyright , outdent, indent, bullist, numlist, undo, redo, link",
                         theme_advanced_buttons2 : "",            
                         theme_advanced_buttons3 : "",
                         theme_advanced_toolbar_location : "top",
                         theme_advanced_toolbar_align : "left",
                         theme_advanced_statusbar_location : "bottom",
                         theme_advanced_resizing: "false",
                         plugins: "images, paste",
                         '),array('class' =&gt; 'tinyMCE',)
      );  
  </code></pre>
  
  <p>I need to validte this, I try sfValidatorString ,but it is not work</p>