Laravel 5.1 utf-8 saving to database

I'm trying to save a record to database. When get value from input and save it to database there is no problem, like :

$request->input('name') is an input with value of 'سلام'

$provider->name = $request->input('name');
$provider->copyright_email = 'test@yahoo.com';
$provider->save();

But when i try give value from my controller problem appears. Name will save '?' into database :

$provider->name = 'سلام';
$provider->copyright_email = 'test@yahoo.com';
$provider->save();

I've already added this code to config/database.php :

'charset' => 'utf8',
'collation' => 'utf8_persian_ci',

via Chebli Mohamed