添加到字段的约束错误不显示字段

Question

我动态生成一个表单并添加约束（即 Choice）。

$builder->add('test', 'choice', [
    'choices' => [1, 'one', 2 => 'two'],
    'required' => true,
    'expanded' => true,
    'error_bubbling' => true,
    'cascade_validation' => true,
    'label' => 'this_is_a_test',
    'multiple' => false,
    'constraints' => [
        new NotBlank([
            'groups' => ['Default']
        ]),
        new Choice([
            'min' => 1,
            'choices' => [1, 2],
            'groups' => ['Default']
        ])
    ]
]);

当提交包含空数据的表单时，错误显示的是表单，而不是我添加约束的表单元素（也在探查器中检查过）。

这些约束没有选项 atPath，我将它们直接添加到字段中，所以我不明白为什么它们会出现在表单中。

Answer 1

这就是 error_bubbling 选项的作用（您在表单类型中将其设置为 true）：

If true, any errors for this field will be passed to the parent field or form. For example, if set to true on a normal field, any errors for that field will be attached to the main form, not to the specific field.

添加到字段的约束错误不显示字段

Error for Constraint added to Field does not show for field

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