res.data.title = "Edit "+this.__prototype__;
res.data.action = "edit";

if (req.data.submit) {    
    
    if (this.edit(req.params)) {
        res.redirect(this._parent.href("list")); //redirect back to list page
    }  
    //otherwise the error mesg will be in res.mesage so just render form page again below
}

this.renderPage("form");