Question

i have an embedded document within a document as following :

{
user:"Alex",
actions: {
            openFav:8,
            clickShare:5
         }
}

So what i need is to move the embedded document actions one level up and have them in different collection (so i could do a quick stats report).

So the end result will look like this :

{
user:"Alex", 
openFav:8,
clickShare:5 
}

how could i do this in mongodb javascript shell ?

Answer 1

Copy the properties using a for...in loop, then delete actions:

var o = { user: "Alex", actions: { openFav: 8, clickShare: 5 } }
for (var k in o.actions) { o[k] = o.actions[k] }
delete o.actions