Question

实体：

class Wheel {
    ....
    /**
     * @ORM\ManyToOne(targetEntity="Car")
     */
    protected car;
    ...
}

形式：

class WheelType extends AbstractType {
    public function buildForm(FormBuilderInterface $builder, array $options) {
        ....
        $form->add('car', 'entity', array(
            'class' => 'namespace\Car',
        );
    ...

控制器：

$form->handleRequest($request);
dump($form->getErrors(true));
exit;

嫩枝：

 {{ form_row(form.car) }}

输出：

FormErrorIterator {#1897 ▼
  -form: Form {#1861 ▶}
  -errors: array:1 [▼
    0 => FormError {#2083 ▼
      -message: "This value is not valid."
      #messageTemplate: "This value is not valid."
      #messageParameters: array:1 [▼
        "{{ value }}" => "BMW"
      ]
      #messagePluralization: null
      -cause: ConstraintViolation {#2094 ▼
        -message: "This value is not valid."
        -messageTemplate: "This value is not valid."
        -parameters: array:1 [▶]
        -plural: null
        -root: Form {#1861}
        -propertyPath: "children[car]"
        -invalidValue: "BMW"
        -constraint: Form {#1999 ▶}
        -code: 1
        -cause: TransformationFailedException {#1879 ▼
          #message: "Unable to reverse value for property path "car": The choice "BMW" does not exist or is not unique"

如果我理解错误，则表示无法从doctrine 宝马获取PK对象。或者宝马是唯一的，并且确实存在于实体Car。

有什么想法吗？我需要使用数据转换器吗？在这种情况下它非常奇怪，因为这曾经在以前的symfony2版本（2.0）中工作

当前版本：symfony 2.7.6

Symfony表单显示此错误：此值无效

0 个答案: