Checking if database connection established / exists Ci4 - codeigniter-4

Question

I'm trying to check id database connection exist or not then redirect to a page where a user can be able to create a database through form inputs.
Here's what I tried to do but not succeed.
public function index()
{
// $database = \Config\Database::connect();
$database = \CodeIgniter\Database\Config::getConnections();
if ($database)
{
//db connection initialized
return view('dashboard');
}
else
{
//db connection not initialized
return redirect('db_setup');
}
}

Answer 1

Using the code from Virender Kumar but extending it with your request for dbname verification, use something like this:
$database = \Config\Database::connect();
if ($database)
{
// check if db exists:
if($database->query("SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME='yourDbName'")) {
//db connection initialized
return view('dashboard');
} else {
return false; // db not exist
}
} else {
//db connection not initialized
return redirect()->to('db_setup');
}
Explanation: I added a CodeIgniter 4 raw query $db->query() that selects the general information schema from the database. If the database does not exists you'll get an error.

Answer 2

You have syntax error in redirect function and I am not sure about getconnections function what you have implemented there but connect () will work. See updated code
$database = \Config\Database::connect();
if ($database)
{
//db connection initialized
return view('dashboard');
}
else
{
//db connection not initialized
return redirect()->to('db_setup');
}