Laravel 在维护模式下显示自定义消息
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Laravel display a custom message in Maintenance Mode
提问by raphadko
I'm checking out Laravel docs for Maintenance Mode:
我正在查看维护模式的 Laravel 文档：
https://laravel.com/docs/5.3/configuration#maintenance-mode
https://laravel.com/docs/5.3/configuration#maintenance-mode
When you execute the command php artisan down, it will put the application under maintenance mode, and return the 503.blade.php view.
当您执行该命令时php artisan down，它会将应用程序置于维护模式，并返回 503.blade.php 视图。
Works good, but there is an option I can't really make work.. when I do:
效果很好，但有一个选项我真的无法工作..当我这样做时：
php artisan down --message='Upgrading Database' --retry=60
I want to display the message in the view, I tried accessing the obvious choice with {{ $message }}without success, returns undefined variable.
我想在视图中显示消息，我尝试访问明显的选择{{ $message }}但没有成功，返回未定义的变量。
My question is: how to access it?
我的问题是：如何访问它？
回答by Antony Sklyar
Actually you don't need that "json_decode" stuff, as all the "error" views (including 503.blade.php) have $exceptionvariable.
实际上你不需要那个“json_decode”的东西，因为所有的“错误”视图（包括503.blade.php）都有$exception变量。
So you may just use {{ $exception->getMessage() }}in your view and you will get the exact value that you have passed to artisan down --messagecommand.
所以你可以只{{ $exception->getMessage() }}在你的视图中使用，你会得到你传递给artisan down --message命令的确切值。
回答by gmsantos
By default 503.blade.phpview doesn't use this message.
默认情况下503.blade.php视图不使用此消息。
This message is available in a JSON formatted file named storage/framework/downgenerated by php artisan downcommand.
此消息在名为storage/framework/downgenerate byphp artisan downcommand的 JSON 格式文件中可用。
You could do something like this to access the directly the message in your view:
您可以执行以下操作来直接访问视图中的消息：
{{ json_decode(file_get_contents(storage_path('framework/down')), true)['message'] }}
A cleaner way is to use the $exceptionvariable and include in your view {{ $exception->getMessage() }}like suggested in this answer.
更简洁的方法是使用$exception变量并将其包含在您的视图中，{{ $exception->getMessage() }}如本答案中建议的那样。
Under the hood, the CheckForMaintanceModemiddleware reads the message and other data from the fileand thrown a MaintanceModeExceptionwith this data.
在幕后，CheckForMaintanceMode中间件从文件中读取消息和其他数据，并MaintanceModeException用这些数据抛出一个。
回答by Taras
If you want detailed information (not just message) on your maintenance page, you can also use $exception->retryAfter(Int), $e->willBeAvailableAt(Carbon) and $e->wentDownAt(Carbon).
Of course you need to set --retryparameter in artisan command.
如果您需要维护页面上的详细信息（不仅仅是消息），您还可以使用$exception->retryAfter(Int)、$e->willBeAvailableAt(Carbon) 和$e->wentDownAt(Carbon)。当然你需要在 artisan 命令中设置--retry参数。
