自定义约束验证错误不会显示在Symfony2中的字段旁边 [英] Custom constraint validation error doesn't display next to field in Symfony2

问题描述

我在我的Symfony2项目中使用FOSUserBundle。我在用户实体中添加了生日字段，因为它在注册表单中需要。我还在注册表中添加了一个正确的字段（type = birthday）。我必须检查用户的年龄是否超过18.我为此准备了自己的约束本教程。一切工作完美，但错误消息附加到形式不是字段，我想要错误消息旁边的字段。相反，我得到它的整个形式。格式中的每个其他错误都显示在正确的字段旁边。有人知道如何强制约束附加到字段，而不是形式？

I am using FOSUserBundle in my Symfony2 project. I added 'birthday' field in User entity, because it is required in registration form. I also added a proper field (type=birthday) to the registration form. I have to check if age of a user is above 18. I prepared my own Constraint for this following this tutorial. Everything works perfectly, but error message is attached to form not to field, and I want error message next to field. Instead I get it above the whole form. Every other error in form is displayed next to a proper field. Does anybody know how to force constraint to be attached to the field, not to the form?

编辑：

Twig代码片段，呈现此特定字段：

Twig code fragment which renders this particular field:

<div class="grid_8" style="margin-bottom:20px;">
      <div class="grid_2 alpha">{{ form_label(form.date_of_birth)}}</div>
      <div class="grid_4">{{ form_widget(form.date_of_birth)}}</div>
      <div class="grid_2 omega">{{ form_errors(form.date_of_birth)}}</div>
</div> 

在表单开头，我还有：

<div class="grid_8">
  {{form_errors(form)}}
</div>

推荐答案

如果您将回调附加到表单，你应该设置属性路径有点不同的方式：

If you attach callback to form – not to particular field, you should set property path a bit different way:

public function isFormValid($data, ExecutionContext $context)
{
    if ( $condition == false ) {
        $context->addViolationAt('[date_of_birth].date_of_birth', 'You are too young!');
    }
}

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