BookStack/app/Console/Commands/UpgradeDatabaseEncoding.php

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<?php
namespace BookStack\Console\Commands;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
class UpgradeDatabaseEncoding extends Command
{
/**
* The name and signature of the console command.
*
* @var string
*/
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protected $signature = 'bookstack:db-utf8mb4 {--database= : The database connection to use.}';
/**
* The console command description.
*
* @var string
*/
protected $description = 'Generate SQL commands to upgrade the database to UTF8mb4';
/**
* Create a new command instance.
*
*/
public function __construct()
{
parent::__construct();
}
/**
* Execute the console command.
*
* @return mixed
*/
public function handle()
{
$connection = DB::getDefaultConnection();
if ($this->option('database') !== null) {
DB::setDefaultConnection($this->option('database'));
}
$database = DB::getDatabaseName();
$tables = DB::select('SHOW TABLES');
$this->line('ALTER DATABASE `'.$database.'` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
$this->line('USE `'.$database.'`;');
$key = 'Tables_in_' . $database;
foreach ($tables as $table) {
$tableName = $table->$key;
$this->line('ALTER TABLE `'.$tableName.'` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
}
DB::setDefaultConnection($connection);
}
}