流明检查数据库配置没有提示错误

Question

My lumen application is connecting to multiple databases, one of my function need to connect to the database by URL parameter, is there any way to check the database already exists in my config/database.php?

I've tried to use the function below :

$client = $request->input('client');
if (!$databse->setConnection($client)->getDatabaseName()) {
    return 'no db';
}

but if the database not exists it will prompt error, even I can catch InvalidArgumentException to display the error message, but is there any alternative way to do this? Thanks!

Answer 1

You can use the has method from the Config facade to check if the connection is configured:

use Illuminate\Support\Facades\Config;

...

if(Config::has('database.connections.client_connection')) {
  echo "The database exists.";
} else {
  echo "Please create the database first!";
}