不要忘记使用 with() 来减少 N+1 问题。做简单的 foreach 并获取名称。

// Get all users with assigned role
$users = \App\User::query()->with('roles')->get();
foreach ($users as $user) {
    echo $user->name . '<br/>';
    foreach ($user->roles as $role) {
        echo $role->name . '<br/>';
    }
}

// Get all user of a specific role
$users = \App\User::query()->whereHas('roles', function ($query) {
    $query->where('name', 'isAdmin');
})->get();
foreach ($users as $user) {
    echo $user->name . '<br/>';
    foreach ($user->roles as $role) {
        echo $role->name . '<br/>';
    }
}