MongoDB - Project only the matching element in an array
Use the positional operator($) to project only the first matching sub document.
db.t.find({"array":{"type":"dog", "name":"Steve"}},{"array.$":1})Using meteor, you would have to stick to aggregation, since the positional operator does not work:
db.t.aggregate([{$match:{"array.type":"dog","array.name":"Steve"}},{$unwind:"$array"},{$match:{"array.type":"dog","array.name":"Steve"}}])