laravel spatie asigne role

$user->assignRole('writer');

// You can also assign multiple roles at once
$user->assignRole('writer', 'admin');
// or as an array
$user->assignRole(['writer', 'admin']);

$role->givePermissionTo($permission);
$permission->assignRole($role);

$role->syncPermissions($permissions);
$permission->syncRoles($roles);