laravel modify verification prompt in Chinese

Laravel is an open source PHP web application framework. It has the characteristics of concise code, easy to understand and learn, and full of innovation. Therefore, it is welcomed by more and more developers. Among them, validation is a very important part of the Laravel framework, which helps developers verify and protect form data submitted by users. However, Laravel's default verification prompt information is all in English, which is not convenient for use on Chinese sites. Next, let's discuss how to modify the verification prompt information of the Laravel framework into Chinese.

0. Introduction

Before starting the formal modification work, we need to clarify several concepts.

First, the default validator of the Laravel framework is IlluminateValidationValidator.

Second, the validator component of the Symfony framework is used by default in the Laravel framework.

Third, the Laravel framework itself provides a variety of methods for modifying verification prompt information, such as modifying the messages array in the validator, using language packs, etc.

1. Modify the messages array in the validator

In the Laravel framework, there is a messages array in the Validator class, which stores all verification prompt information. When using the Validator, we can Modify the verification prompt information by modifying the array. The following is a sample code:

$validator = Validator::make($request->all(), [
    'name' => 'required|max:255',
    'email' => 'required|email|unique:users,email',
    'password' => 'required|confirmed|min:6',
]);

$validator->messages()->add(
    'email.unique', '该邮箱已被注册，请使用其他邮箱。'
);

In the above code, we use the Validator::make method to create a validator and set three validation rules: name is required and the length does not exceed 255 characters; Email is required, must be a legal email address, and unique in the users table; password is required, confirm password, and must be no less than 6 characters in length. Then, we added a new prompt message by calling the $validator->messages()->add method, specifying that when the validation rule unique of the email field fails, it should prompt "The email address has been registered, please use Other email addresses." In this way, we can flexibly modify the verification prompt information.

It should be noted that the prompt information modified using this method will only take effect when the current validator is created. If it needs to take effect for all validators, it needs to be added to each validator. .

2. Use language pack

In addition to directly modifying the messages array in Validator, Laravel also provides another convenient method to modify the verification prompt information, which is to use language packs. The Laravel framework provides multiple language packages by default, including English, Spanish, French, German, Japanese, Chinese, etc. We can find the corresponding verification prompt information in the language pack and modify it.

Using language packs in Laravel is very simple. You only need to create the corresponding language pack folder in the resources/lang directory to start modifying the verification prompt information. For example, if we need to change the verification prompt information to Chinese, we need to create the zh-CN folder in the resources/lang directory, create the validation.php file in this folder, and then write the modified verification prompt information Just go to this file. The sample code is as follows:

<?php
// resources/lang/zh-CN/validation.php

return [
    'required' => ' :attribute 为必填项。',
    'max' => [
        'numeric' => ' :attribute 不能大于 :max。',
        'file' => ' :attribute 不能大于 :max kb。',
        'string' => ' :attribute 不能超过 :max 个字符。',
        'array' => ' :attribute 不能超过 :max 个项。',
    ],
    'email' => ' :attribute 必须为合法的邮箱地址。',
    'unique' => ' :attribute 已存在，请使用其他 :attribute。',
    'confirmed' => '两次输入的 :attribute 不一致。',
];

In the above code, we define prompt information for multiple verification rules such as required and max. This information will be used in the Laravel framework to verify the form data submitted by the user and prompt when the verification fails. This method is more suitable for modifying the verification prompt information site-wide, without adding it to each Validator object.

3. Translation of Symfony verification component

In addition to the above two methods, the Symfony verification component also provides a built-in translation function. We can use this function to translate the verification prompt information in the Laravel framework. translate to Chinese.

To use the translation function of the Symfony verification component, we first need to install the symfony/translation component as follows:

composer require symfony/translation

Then, we need to set up the translator in the Laravel framework, in the AppServiceProvider class Add the following code to the boot method:

use IlluminateSupportFacadesLang;

class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        $this->app->singleton('translator', function($app){
            $loader = new SymfonyComponentTranslationLoaderArrayLoader;
            $translator = new SymfonyComponentTranslationTranslator('zh');
            $translator->addLoader('array', $loader);
            $translator->addResource('array', require __DIR__ . '/../vendor/symfony/validator/Resources/translations/validators.zh.xlf', 'zh');
            $loader->load($this->getTranslatorMessages());

            return new IlluminateTranslationTranslator($translator);
        });
    }

    public function getTranslatorMessages()
    {
        $messages = [
            'required' => ':attribute 为必填项。',
            'max' => [
                'numeric' => ':attribute 不能大于 :max。',
            ],
            'email' => ':attribute 必须为合法的邮箱地址。',
            'unique' => ':attribute 已存在，请使用其他 :attribute。',
            'confirmed' => '两次输入的 :attribute 不一致。',
        ];

        return $messages;
    }
}

In the above code, we use the translation function provided by the Symfony verification component in the AppServiceProvider. Among them, we set the language of the translator to Chinese and loaded the translation file validators.zh.xlf that comes with the Symfony verification component. In the getTranslatorMessages method, we define the verification prompt messages that need to be translated. In this way, when the Laravel framework validates the form data, the Symfony translation component will automatically translate the English validation prompt information into Chinese.

It should be noted that this method is more troublesome and requires installing new components and modifying the ServiceProvider class of the Laravel framework.

4. Summary

The above are methods for modifying the Laravel framework verification prompt information, including directly modifying the messages array in the Validator, using language packs, and translation of the Symfony verification component. Different methods are suitable for different scenarios, and you can choose according to your own needs.

In actual development, we usually use a combination of the above methods, such as adding customized verification prompt information in Validator, and covering and adjusting it in the language pack, so as to ensure refined control, and can easily manage and maintain the entire site.

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