Setting Value to a Form

Sample Code:

public function executeNew(sfWebRequest $request)
{
$this->forward404Unless($procedure_mail_template = $request->getParameter('procedure_id'), sprintf('Procedure Mail Template is not defined (%s).', $request->getParameter('procedure_id')));

$procedure_mail_templates = new ProcedureMailTemplate;
$procedure_mail_templates->setProcedureId($request->getParameter('procedure_id'));
$this->form = new ProcedureMailTemplateForm($procedure_mail_templates);
}