Why does the log generated by laravel have no permission?

Laravel is a widely used PHP framework that provides rich functions and tools to enable developers to quickly build secure, reliable and easy-to-maintain web applications. Laravel's built-in logging function allows developers to save application running logs to files for analysis and troubleshooting. However, in some cases, the log files generated by Laravel may encounter permission issues and fail to output properly.

The reason why Laravel generates log files without permission is that the permissions of the file storage location are insufficient. In order to solve this problem, we can use the following methods:

1. Adjust storage location permissions

By default, Laravel log files are stored in the storage/logs directory. We need to make sure that the permissions on the directory are sufficient to allow the PHP process to write and read from the directory. You can execute the following command in the terminal to set the permissions of the directory:

chmod -R 775 storage/logs

The 775 permission setting allows the owner and group users to read, write and execute the directory, and other users can only read and execute.

2. Change Laravel log storage location

If we don’t want to use the default storage location, we can modify the storage location through the configuration file. Open the config/logging.php file, find the path option in the log, and modify it to the specified storage path.

'log' => env('APP_LOG', 'single'),
    'path' => '/your/folder/path/logs/laravel.log',
    'level' => env('LOG_LEVEL', 'debug'),
    'channels' => [
        // ...
    ],

3. Capture Laravel logs and store them into database

We can capture and store Laravel logs into a database instead of a file. This method can avoid file permission problems and facilitate log analysis and statistics.

We need to perform the following operations:

• Create a log table in the database to store log data;
• In the app/Providers/AppServiceProvider.php file Register the implementation of the log interface in;
• Modify the configuration in the config/logging.php file and set the log option to database.

First step, create a log table

CREATE TABLE `logs` (
    `id` bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT,
    `channel` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
    `level` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
    `message` text COLLATE utf8mb4_unicode_ci NOT NULL,
    `context` text COLLATE utf8mb4_unicode_ci NOT NULL,
    `extra` text COLLATE utf8mb4_unicode_ci NOT NULL,
    `created_at` datetime(6) NOT NULL,
    PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

Second step, register AppServiceProvider

Add the following code in the app/Providers/AppServiceProvider.php file:

use Illuminate\Support\Facades\Log;
use Monolog\Handler\StreamHandler;
use Monolog\Logger;

public function boot()
{
    $logger = new Logger('laravel');
    $logger->pushHandler(new StreamHandler(storage_path('logs/laravel.log'), Logger::DEBUG));

    Log::listen(function ($level, $message, $context) use ($logger) {
        $logger->$level($message, $context);
    });
}

The third step is to modify the config/logging.php file

Also modify the configuration in the config/logging.php file and set the log option to database:

'log' => 'database',
'channels' => [
        // ...
    ],

The above three methods can help developers solve the problem of no permissions for log files generated by Laravel. The third method can also allow developers to better manage and analyze the log information of the application.

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