可捕获致命错误：类Zend \ Form \ View \ Helper \ FormLabel [关闭]的对象

$可捕获致命错误：类Zend \ Form \ View \ Helper \ FormLabel [关闭]的对象$

问题描述：

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

form.phtml

<?php echo $this->form()->openTag($form);?>
<?php echo $this->formLabel($form->get('nome_produto'));?>
<?php echo $this->formElement($form->get('nome_produto'));?>
<?php echo $this->formErrors($form->get('nome_produto'));?>
<?php echo $this->form()->closeTag($form);?>

ProdutosController.php

public function novoAction()
{
    $form = new ProdutoForm();

    $view = new ViewModel(array(
            'form' => $form
    ));
    $view->setTemplate('application/produtos/form.phtml');
    return $view;
}

ProdutoForm.php

    <?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->setLabel('Nome: ')
         ->setAttributes(array(
            'class' => 'input-mediun'
         ));
    $this->add($nome);

...

可捕获的致命错误：类Zend \ Form \ View \ Helper \ FormLabel 的对象可以不能转换为（...）\ module \ Application \ view \ application \ produtos \ form.phtml中的字符串 2 p> blockquote>

表单 .phtml p>

 ＆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; \  n＆lt;？php echo $ this-＆gt; formErrors（$ form-＆gt; get（'nome_produto'））;？＆gt; 
＆lt;？php echo $ this-＆gt; form（） - ＆gt; closeTag（$ form）  ;？＆gt; 
  code>  pre> 
 
  ProdutosController.php  p> 
 
 
  public function novoAction（）
 {
 $ form  = new ProdutoForm（）; 
 
 $ view = new ViewModel（array（
'form'=＆gt; $ form 
））; 
 $ view-＆gt; setTemplate（'application / produtos / form.phtml  '）; 
返回$ view; 
} 
  code>  pre> 
 
  ProdutoForm.php  p> 
 
 
 ＆lt;？php  
 
 命名空间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>

答

Yeah those form view helpers should really have better error detection. I'm guessing $form->get('nome_produto') is returning null. As a result the FormLabel view helper is simply returning itself since it has nothing to actually render. The echo command is then trying to cast the view helper to a string.

Double check the element name and make sure you're getting the right item from the form.

可捕获致命错误：类Zend \ Form \ View \ Helper \ FormLabel [关闭]的对象

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