ZF2 水合器和阵列

Question

我对 ArraySerializable 水化器和数组有疑问。我有这个代码：

$users = array();
$produtos = array();
$ros = $this->roService->findAllEntities();
foreach ($ros as $ro) {
    $users[] = $this->usuarioService->findEntity($ro->attributes['idUsuario']->attribute);
    $produtos[] = $this->produtoService->findEntity($ro->attributes['idProduto']->attribute);
    var_dump($produtos[0]->attributes);
}

这是 var_dump($produtos[0]->attributes) 两次迭代的输出：

array (size=3)
'id' => 
  object(Application\Model\Attribute\Id)[307]
    protected 'name' => string 'id' (length=2)
    protected 'attribute' => string '2' (length=1)
    protected 'validators' => 
      array (size=0)
        empty
'dataHoraCadastro' => 
  object(Application\Model\Attribute\DataHoraCadastro)[308]
    protected 'name' => string 'dataHoraCadastro' (length=16)
    protected 'attribute' => string '2015-03-07 14:03:37' (length=19)
    protected 'validators' => 
      array (size=0)
        empty
'nome' => 
  object(Application\Model\Attribute\Nome)[309]
    protected 'name' => string 'nome' (length=4)
    protected 'validators' => 
      array (size=1)
        0 => 
          object(Application\Validator\StringLengthValidator)[310]
            ...
    protected 'minimoCaracteres' => int 3
    protected 'maximoCaracteres' => int 70
    protected 'attribute' => string 'Produto 1' (length=4)

array (size=3)
'id' => 
  object(Application\Model\Attribute\Id)[307]
    protected 'name' => string 'id' (length=2)
    protected 'attribute' => string '4' (length=1)
    protected 'validators' => 
      array (size=0)
        empty
'dataHoraCadastro' => 
  object(Application\Model\Attribute\DataHoraCadastro)[308]
    protected 'name' => string 'dataHoraCadastro' (length=16)
    protected 'attribute' => string '2015-03-07 14:03:37' (length=19)
    protected 'validators' => 
      array (size=0)
        empty
'nome' => 
  object(Application\Model\Attribute\Nome)[309]
    protected 'name' => string 'nome' (length=4)
    protected 'validators' => 
      array (size=1)
        0 => 
          object(Application\Validator\StringLengthValidator)[310]
            ...
    protected 'minimoCaracteres' => int 3
    protected 'maximoCaracteres' => int 70
    protected 'attribute' => string 'Produto 2' (length=9)

$users、$produtos 和 $ros 是实体数组。 findEntity 和 findAllEntities 方法的代码是：

/**
 * @inheritDoc
 */
public function findEntity($id) {
    $result = $this->executeFindSql($id);

    if ($result instanceof ResultInterface && $result->isQueryResult()) {
        return $this->hydrator->hydrate($result->current(), $this->entity);
    }
}

/**
 * @inheritDoc
 */
public function findAllEntities() {
    $result = $this->executeFindSql();

    if ($result instanceof ResultInterface && $result->isQueryResult()) {
        $resultSet = new HydratingResultSet($this->hydrator, $this->entity);

        return $resultSet->initialize($result);
    }

    return array();
}

问题是 $produtos 和 $users 数组在调用 findEntity 方法时覆盖了整个数组。似乎在每次迭代中，整个数组都会被最后一个实体替换。然后，在第二次迭代中，$produtos 数组的索引 0 与第一次迭代中的值不同...

到循环结束时，数组中的每个元素都有最后一个实体...很奇怪。提前致谢:)

Answer 1

遇到了同样的问题。我假设您像我一样将此代码基于教程。好吧，问题出在教程中。

替换

$resultSet = new HydratingResultSet($this->hydrator, $this->entity);

和

$resultSet = new HydratingResultSet($this->hydrator, clone $this->entity);

这对我有用。

祝你好运。

Answer 2

几个月前我解决了我的问题。我找到了答案 here。问题是我的实体的属性是对象，而不是标量变量。然后，我需要实现克隆方法：

public function __clone() {
    foreach ($this->attributes as &$attribute) {
        $attribute = clone $attribute;
    }
    ... clone of another variables that are objects
}

最后，这是一个关于克隆的问题，而不是关于 zf2 水化器和阵列的问题。

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