Error: Not permitted. Untrusted code may only update documents by ID when update sub array using $ in Meteor
Cause:
Suppose we have this doc:
{
_id: 1;
tags: [
{tag: “tag1”, count: 0},
{tag: “tag2”, count: 0},
]
}
And we want to update tag1 count by inc with 1 with a client-side script:
db.tags.update({_id:1, “tags.tag”: “tag1”}, {$inc: {“tags.$.count”: 1}})
Even the above update only update a single document, Meteor will not allow us to do so because it expects only _id in the update condition.
Solution: Update the whole tags with a modified value for tag1 count:
db.tags.update({_id:1}, {$set: {“tags”: [{tag: “tag1”, count: 1},{tag: “tag2”, count: 0},]}});