has one relation laravel code example

Example 1: laravel how to query belongsTo relationship

$movies = Movie::whereHas('director', function($q) {
    $q->where('name', 'great');
})->get();

Example 2: laravel relation has one

// User model
public function phone()
{
  return $this->hasOne(Phone::class);
}

// User controller
$phone = User::find(1)->phone;