title: Catchable fatal error: Object of class Zend\Form\View\Helper\FormLabel
body: <blockquote>
    <p>Catchable fatal error: Object of class Zend\Form\View\Helper\FormLabel
    could not be converted to string in
    (...)\module\Application\view\application\produtos\form.phtml on line
    2</p>
  </blockquote>
  
  <p>form.phtml</p>
  
  <pre><code>&lt;?php echo $this-&gt;form()-&gt;openTag($form);?&gt;
  &lt;?php echo $this-&gt;formLabel($form-&gt;get('nome_produto'));?&gt;
  &lt;?php echo $this-&gt;formElement($form-&gt;get('nome_produto'));?&gt;
  &lt;?php echo $this-&gt;formErrors($form-&gt;get('nome_produto'));?&gt;
  &lt;?php echo $this-&gt;form()-&gt;closeTag($form);?&gt;
  </code></pre>
  
  <p>ProdutosController.php</p>
  
  <pre><code>public function novoAction()
  {
      $form = new ProdutoForm();
  
      $view = new ViewModel(array(
              'form' =&gt; $form
      ));
      $view-&gt;setTemplate('application/produtos/form.phtml');
      return $view;
  }
  </code></pre>
  
  <p>ProdutoForm.php</p>
  
  <pre><code>    &lt;?php
  
  namespace Application\Form;
  
  use Zend\Form\Form;
  use Zend\Form\Element\Text;
  
  class ProdutoForm extends Form
  {
  public function __construct($name = null) {
      parent::__construct('produto');
  
      $nome = new Text('nome_produto');
      $nome-&gt;setLabel('Nome: ')
           -&gt;setAttributes(array(
              'class' =&gt; 'input-mediun'
           ));
      $this-&gt;add($nome);
  </code></pre>
  
  <p>...</p>