如何更改Laravel验证消息的最大文件大小以MB代替KB? [英] How to change Laravel Validation message for max file size in MB instead of KB?

问题描述

Laravel随附以下验证消息，该消息显示文件大小(以千字节为单位):

file' => 'The :attribute may not be greater than :max kilobytes.',

我想以显示兆字节而不是千字节的方式对其进行自定义. 因此，对于用户来说，它看起来像:

文档不能大于10 MB."

我该怎么做?

解决方案

您可以扩展验证器以添加自己的规则，并使用相同的逻辑，而无需转换为kb.您可以将对Validator::extend的调用添加到AppServiceProvider.

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Validator::extend('max_mb', function($attribute, $value, $parameters, $validator) {
            $this->requireParameterCount(1, $parameters, 'max_mb');

            if ($value instanceof UploadedFile && ! $value->isValid()) {
                return false;
            }

            // If call getSize()/1024/1024 on $value here it'll be numeric and not
            // get divided by 1024 once in the Validator::getSize() method.

            $megabytes = $value->getSize() / 1024 / 1024;

            return $this->getSize($attribute, $megabytes) <= $parameters[0];
        });
    }
}

然后要添加错误消息，您可以将其添加到验证lang文件中.

请参阅手册中有关自定义验证规则的部分

Laravel comes with this validation message that shows file size in kilobytes:

file' => 'The :attribute may not be greater than :max kilobytes.',

I want to customize it in a way that it shows megabytes instead of kilobytes. So for the user it would look like:

"The document may not be greater than 10 megabytes."

How can I do that?

解决方案

You can extend the validator to add your own rule and use the same logic without the conversion to kb. You can add a call to Validator::extend to your AppServiceProvider.

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Symfony\Component\HttpFoundation\File\UploadedFile;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Validator::extend('max_mb', function($attribute, $value, $parameters, $validator) {
            $this->requireParameterCount(1, $parameters, 'max_mb');

            if ($value instanceof UploadedFile && ! $value->isValid()) {
                return false;
            }

            // If call getSize()/1024/1024 on $value here it'll be numeric and not
            // get divided by 1024 once in the Validator::getSize() method.

            $megabytes = $value->getSize() / 1024 / 1024;

            return $this->getSize($attribute, $megabytes) <= $parameters[0];
        });
    }
}

Then to add the error message you can just add it to your validation lang file.

See the section on custom validation rules in the manual

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