教义Mongo ODM在阵列中找到

Question

I'd like to build a query that filters for the elements of the roles array. I need the users who have the role admin or the role user. This is (a part of) my document:

{
    "username": "test_joe",
    "email": "joe@joe.joe",
    "enabled": true,
    "roles": [
        "admin",
        "user",
        "guest"
    ]
}

I tried something like this, but this is not the correct one:

$qb = $dm->getRepository('AppBundle:User')->createQueryBuilder('user')
        ->select('email');

$qb->addOr($qb->expr()->field('roles.admin')->exists(true));
$qb->addOr($qb->expr()->field('roles.user')->exists(true));

Answer 1

There is no field roles.admin in your document. It's field "roles" with array of values. MongoDB matching is polymorphic on arrays so you can match just like you having field "roles": "admin" So you don't need exists but something like ->field('roles')->equals('admin')