Symfony：使日期时间表单字段真正只读

Question

我将日期时间表单字段标记为read_only。由于这种接缝没有效果，我推翻了默认的树枝模板。这工作正常。

{% block datetime_widget %} 
    {% if read_only %} 
     {{ value.date.year }}-{{ value.date.month }}-{{ value.date.day }} {{ value.time.hour }}:{{ value.time.minute }} 
    {% else %} 
     {{ parent() }} 
    {% endif %} 
{% endblock %} 

这是我使用的表单类型：

/** 
* @ORM\Entity 
*/ 
abstract class BusinessClass 
{ 

    /** 
    * @ORM\Column(type="datetime") 
    * @var \DateTime 
    */ 
    private $created; 

    /** 
    * @return \DateTime 
    */ 
    public function getCreated() 
    { 
     return $this->created; 
    } 

} 

这是日期时间字段是如何加入到表单生成器：

$formBuilder->add('created', 'datetime', array('read_only' => true)); 

然而，symfony中仍然尝试将未更改的值设置回我的表单类型。由于它是只读的，我只实现了get方法，但没有设置方法。这就是为什么我得到这个错误信息：

InvalidPropertyException: Neither element "created" nor method "setCreated()" exists in class "Cinergy\ShopBundle\Tests\Functional\TestBundle\Entity\RecurringProduct" 

    in /Users/ernst/Source/php/cinergy/shop/vendor/symfony/symfony/src/Symfony/Component/Form/Util/PropertyPath.php line 552 
    at PropertyPath->writeProperty(object(RecurringProduct), 'created', null, false, null) in /Users/ernst/Source/php/cinergy/shop/vendor/symfony/symfony/src/Symfony/Component/Form/Util/PropertyPath.php line 318 
    at PropertyPath->setValue(object(RecurringProduct), null) in /Users/ernst/Source/php/cinergy/shop/vendor/symfony/symfony/src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php line 74 
    at PropertyPathMapper->mapFormsToData(array('created' => object(Form), 'duration' => object(Form), 'id' => object(Form), 'name' => object(Form), 'price' => object(Form), 'sku' => object(Form), 'updated' => object(Form), '__entity' => object(Form), '__id' => object(Form)), object(RecurringProduct)) in /Users/ernst/Source/php/cinergy/shop/vendor/symfony/symfony/src/Symfony/Component/Form/Form.php line 569 
    at Form->bind(object(Request)) in /Users/ernst/Source/php/cinergy/shop/src/Cinergy/DaylightBundle/Controller/BrowserController.php line 123 
    at BrowserController->updateAction(object(Request)) 
    at call_user_func_array(array(object(BrowserController), 'updateAction'), array(object(Request))) in /Users/ernst/Source/php/cinergy/shop/src/Cinergy/CommonBundle/EventListener/TransactionWrapper.php line 34 
    at TransactionWrapper->wrappedExecution(object(Request)) 
    at call_user_func_array(array(object(TransactionWrapper), 'wrappedExecution'), array(object(Request))) in /Users/ernst/Source/php/cinergy/shop/app/bootstrap.php.cache line 1426 
    at HttpKernel->handleRaw(object(Request), '1') in /Users/ernst/Source/php/cinergy/shop/app/bootstrap.php.cache line 1390 
    at HttpKernel->handle(object(Request), '1', true) in /Users/ernst/Source/php/cinergy/shop/app/bootstrap.php.cache line 1566 
    at HttpKernel->handle(object(Request), '1', true) in /Users/ernst/Source/php/cinergy/shop/app/bootstrap.php.cache line 617 
    at Kernel->handle(object(Request)) in /Users/ernst/Source/php/cinergy/shop/web/app_dev.php line 28 

因为这是我的业务逻辑的一部分，我不想实现一个setCreate方法。同样值得一提的是，对于文本字段来说，同样的事情效果很好。

任何关于如何设置read_only选项来阻止symfony设置的想法？

Answer 1

简短的回答是：使用disabled而不是read_only。

找到relevant part in the docs后，我认为read_only的日期时间呈现不正确。只有设置read_only没有改变。根据文档，它应该被改为只读HTML。

Answer 2

不幸的是，如果映射字段被设置为禁用，那么它不会被保留。它的值变为空，这可能不是OP正在寻找的东西。另一种解决方案是做这样的事情在你的模板如下：

{% if household.dateAdded is not null %}{{ household.dateAdded|date('m/d/Y') }} 
<input type="hidden" name="household[dateAdded]" value="{{ household.dateAdded|date('m/d/Y') }}"> 
{% endif %} 

其中家庭是窗体名称，dateAdded是映射的字段名。