Disconnecting a Laravel Connection - php

Question

I am having some trouble with disconnecting my created conn.
$dbName = session("key")["db_name"]["0"]->main_db;
$oldEmail = $this->connection()->table("tbl_user")->where("id",$UserID)->get();
DB::disconnect($dbName);
$User = User::where("email",$email)->get();
return $User;
I think the connection bypass my model and search for the table name of "User" in my created connection, I don't get the error, though it has the same name in my migration.
This is my codes in generating another connection:
public function connection() {
// SESSION
$dbName = session("key")["db_name"]["0"]->main_db;
// MAKE CONNECTION
Config::set("database.connections.".$dbName, array(
"driver" => config("app.DB_CONNECTION"),
"host" => config("app.DB_HOST"),
"database" => $dbName,
"username" => config("app.DB_USERNAME"),
"password" => config("app.DB_PASSWORD"),
));
DB::setDefaultConnection($dbName);
$conn = DB::connection($dbName);
return $conn;
}

Answer 1

app/config/database.php
return array(
'default' => 'mysql',
'connections' => array(
# Primary/Default database connection
'mysql' => array(
'driver' => 'mysql',
'host' => '127.0.0.1',
'database' => 'database1',
'username' => 'root',
'password' => 'secret'
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),
# Secondary database connection
'mysql2' => array(
'driver' => 'mysql',
'host' => '127.0.0.1',
'database' => 'database2',
'username' => 'root',
'password' => 'secret'
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),
),
);
Useful Links
https://laracasts.com/discuss/channels/eloquent/laravel-5-multiple-database-connection