Update vs updateMany - $unset does not work

help
1

Hi,
I am a little bit behind updating Meteor.
Now I am moving from 2.6 to 2.6.1 and trying to replace update to updateMany.
But this query does not work. Can you help me why???

Old one, which still works, attibute imageBackgroundId is removed.

    'books.removeDeletedImageBackground': function (imageId) {
        return Books.update(
          { userId: this.userId, imageBackgroundId: imageId },
          {
            $unset: { imageBackgroundId: 1 },
          },
          { multi: true }
        );
    },

Does not work, attribute is not removed.

    'books.removeDeletedImageBackground': function (imageId) {
        return Books.updateMany(
          { userId: this.userId, imageBackgroundId: imageId },
          {
            $unset: { imageBackgroundId: 1 },
          }
        );
    },

Thank you!

3

If you want to use updateMany, I believe you need to use rawCollection

Books.rawCollection().updateMany(
  { userId: this.userId, imageBackgroundId: imageId },
  {
    $unset: { imageBackgroundId: 1 },
  }
)