data

Array
(
    [id] => 11
    [locale] => en_US
    [status] => published
    [path] => /11
    [title] => Some example structure node
    [slug] => with-alias
    [layout] => layout/layout
    [metaDescription] => Some example structure node
    [metaKeywords] => Some example structure node
)

Form

    /**
     * Construct
     * Instantiates the form and configures input fields
     *
     * @return void
     */
    public function __construct($name, array $options = array())
    {
        //init
        parent::__construct($name, $options);
        $this->add(new Element\Csrf('csrf'));

        /*
         * Meta elements
         */
        $meta = new FieldSet('Meta');

        //title
        $title = new Element\Text('title');
        $title->setLabel('Title');
        $meta->add($title);

        //slug
        $slug = new Element\Text('slug');
        $slug->setLabel('Slug');
        $meta->add($slug);

        //meta description
        $metaDescription = new Element\Textarea('metaDescription');
        $metaDescription->setLabel('Meta description');
        $meta->add($metaDescription);

        //meta keywords
        $metaKeywords = new Element\Text('metaKeywords');
        $metaKeywords->setLabel('Meta keywords');
        $meta->add($metaKeywords);

        //add meta
        $meta->setAttributes(array('legend' => 'Custom metadata'));
        $this->add($meta);


        /*
         * Templates
         */
        $templates = new FieldSet('Templates');

        $templateNames = array('' => 'Inherited');
        foreach($this->templates as $template)
            $templateNames[$template] = $template;

        //layout
        $layout = new Element\Select('layout');
        $layout->setLabel('Layout template');
        $layout->setValueOptions($templateNames);
        $templates->add($layout);

        //add templates
        $templates->setAttributes(array('legend' => 'Templates'));
        $this->add($templates);
}