How to return a nested document in an array

Question

I have documents with a schema such as follows:

{
    \"user_id\": 123,
    \"services\":[
         {\"name\": \"test\",
          \"data\": ...
         },
             


        

Answer 1

You need to run $unwind to get single document from services and $replaceRoot to promote it to root level:

db.guilds.aggregate([
    {
        $match: { user_id: 123, "services.name": "test" }
    },
    {
        $unwind: "$services"
    },
    {
        $match: { "services.name": "test" }
    },
    {
        $replaceRoot: { newRoot: "$services" }
    }
])