"$cond"

Posted 2020-08-19 jayruan

db.items.aggregate([
    { "$project": {
        "name": 1,
        "customfield": {
            "$cond": { 
                "if": { "$eq": [ "$field1", "4" ] }, 
                "then": 30,
                "else": {
                    "$cond": {
                        "if": { "$eq": ["$field1","8"]}, 
                        "then": 25, 
                        "else": 10
                    }
                }
            }
        }
    }},
   { "$sort": { customfield: 1 }},
   { "$limit":12 }
]);