Symfony：不断收到有关缺少翻译的通知

我正在使用symfony 3.4.19，并且有2种语言的翻译：英语en Dutch。我正在使用这个symfony指南来翻译验证消息

这是我的UserDTO包含断言和消息翻译的部分：

class UserDTO
{
    /**
     * @var string
     *
     * @Assert\NotNull(message="security.registration.firstname.required", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="security.registration.firstname.required", groups={"createUser", "updateUser"})
     */
    private $firstname;

    /**
     * @var string
     *
     * @Assert\NotNull(message="security.registration.lastname.required", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="security.registration.lastname.required", groups={"createUser", "updateUser"})
     */
    private $lastname;

    /**
     * @var string
     *
     * @Assert\NotNull(message="security.registration.email.required", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="security.registration.email.required", groups={"createUser", "updateUser"})
     * @Assert\Email(message="security.registration.email.format", groups={"createUser", "updateUser"})
     */
    private $email;

    /**
     * @var string
     *
     * @Assert\NotNull(message="security.registration.password.required", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="security.registration.password.required", groups={"createUser", "updateUser"})
     */
    private $plainPassword;
}

所以我有2个翻译文件：security.en.yml

"Username could not be found.": "Wrong email or password!"
"Invalid credentials.": "Wrong email or password!"
security:
    login:
        email: 'Email'
        password: 'Password'
    registration:
        firstname:
            title: 'Firstname'
            required: 'A firstname is required'
        lastname:
            title: 'Lastname'
            required: 'A lastname is required'
        email:
            title: 'Email'
            required: 'An email is required'
            format: 'Wrong email format'
        password:
            title: 'Password'
            required: 'A password is required'

和security.nl.yml：

"Username could not be found.": "Verkeerd email of wachtwoord!"
"Invalid credentials.": "Verkeerd email of wachtwoord!"
security:
    login:
        email: 'Email'
        password: 'Wachtwoord'
    registration:
        firstname:
            title: 'Voornaam'
            required: 'Voornaam is verplicht'
        lastname:
            title: 'Achternaam'
            required: 'Achternaam is verplicht'
        email:
            title: 'Email'
            required: 'Email is verplicht'
            format: 'Verkeerd email formaat'
        password:
            title: 'Wachtwoord'
            required: 'Wachtwoord is verplicht'

另外，我不使用symfony表单构建器，所以我只提交在树枝模板中创建的表单：

{% trans_default_domain 'security' %}

{% extends 'base.html.twig' %}

{% block stylesheets %}
    {{ parent() }}
    <link href="{{ asset('css/project/registration.css') }}" rel="stylesheet"/>
{% endblock %}

{% block javascripts %}
    {{ parent() }}
{% endblock %}

{% block body %}
    {{ include('component/main-navbar.html.twig') }}

    <div>
        <h2>Create new account</h2>

        {% if errors is defined %}
            <div class="alert alert-danger">
                <ul>
                    {% for error in errors %}
                        <li>{{ error|trans }}</li>
                    {% endfor %}
                </ul>
            </div>
        {% endif %}

        <form action="/register" method="post">
            <input type="text" name="firstname" placeholder="{{ 'security.registration.firstname.title'|trans }}">
            <input type="text" name="lastname" placeholder="{{ 'security.registration.lastname.title'|trans }}">
            <input type="text" name="email" placeholder="{{ 'security.registration.email.title'|trans }}">
            <input type="text" name="plainPassword" placeholder="{{ 'security.registration.password.title'|trans }}">
            <button type="submit" class="btn btn-success btn-sm float-right">Login <span class="fa fa-lock"></span>
            </button>
        </form>
    </div>

    {{ include('component/footer.html.twig') }}
{% endblock %}

如您所见，在模板顶部，我显式设置了翻译域，即。'安全'。

在控制器中，我有2种方法。第一个是呈现视图，另一个是提交表单。

public function registrationPageAction(Request $request)
{
    return new Response(
        $this->twigService->render(
            'security/register.html.twig',
            [
                'error' => []
            ]
        ),
        200
    );
}

提交表格：

public function registrationSubmitAction(Request $request)
{
    $submittedFormData = $request->request->all();

    $userDTO = new UserDTO();
    $userDTO->setFirstname($submittedFormData['firstname'])
        ->setLastname($submittedFormData['lastname'])
        ->setEmail($submittedFormData['email'])
        ->setPlainPassword($submittedFormData['plainPassword']);

    $fieldErrors = $this->validator->validate($userDTO, null, ['createUser']);

    $errors = [];
    if (count($fieldErrors) > 0)
    {
        foreach ($fieldErrors as $error)
        {
            $errors[] = $error->getMessage();
        }

        return new Response(
            $this->twigService->render(
                'security/register.html.twig',
                [
                    'errors' => $errors
                ]
            ),
            200
        );
    }
}

目前，我不在任何地方存储提交的数据，我只是想确保翻译工作正常。

因此，当我转到/ register时，可以看到带有TRANSLATED字段的表单。并且在调试栏中没有关于缺少翻译的通知：

提交表单后，我还获得了带有翻译字段的表单，但是这次在调试栏中，我还收到了缺少翻译的通知：

请注意，所有翻译（字段和消息）都可以正常工作。在config.yml中，我将后备语言环境设置为'en'，而当前语言环境设置为'nl'。

缺少翻译：

我真的不明白为什么我会一直看到这些通知。有任何想法吗？

更新：

Now I've got rid of security.en.yml and security.nl.yml and created for test purpose only the app/Resources/translations/validators.en.yml with this content:

firstname: 'Firstname is needed'
lastname: 'Lastname is needed'
email: 'Email is needed'
emailformat: 'Wrong email format'
password: 'Password is needed'

Further I've modified validation messages in the UserDTO class:

class UserDTO
{
    /**
     * @var string
     *
     * @Assert\NotNull(message="firstname", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="firstname", groups={"createUser", "updateUser"})
     */
    private $firstname;

    /**
     * @var string
     *
     * @Assert\NotNull(message="lastname", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="lastname", groups={"createUser", "updateUser"})
     */
    private $lastname;

    /**
     * @var string
     *
     * @Assert\NotNull(message="email", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="email", groups={"createUser", "updateUser"})
     * @Assert\Email(message="emailformat", groups={"createUser", "updateUser"})
     */
    private $email;

    /**
     * @var string
     *
     * @Assert\NotNull(message="password", groups={"createUser", "updateUser"})
     * @Assert\NotBlank(message="password", groups={"createUser", "updateUser"})
     */
    private $plainPassword;
}

In register.html.twig I've removed {% trans_default_domain 'security' %} and made the form without field translations:

<form action="/register" method="post">
    <input type="text" name="firstname" placeholder="Firstname">
    <input type="text" name="lastname" placeholder="Lastname">
    <input type="text" name="email" placeholder="Email">
    <input type="text" name="plainPassword" placeholder="Password">
    <button type="submit" class="btn btn-success btn-sm float-right">Login <span class="fa fa-lock"></span>
    </button>
</form>

And again after submitting the form I get those annoying notifications:

What am I doing wrong? I just follow step by step the official symfony guide :(