MongoDB Sort By Nested Array of Object Item

Fri, 29 Mar 2019 21:00:00 +0000

Let’s say, I have this kind of list of Mongodb documents, named hardwares;

 1[
 2	{
 3		_id: ObjectId(...),
 4		name: "Unit x",
 5		parts: [
 6			{ name: "CPU", model: "x" },
 7			{ name: "Memory", size: "4" }
 8		]
 9	},
10	{
11		_id: ObjectId(...),
12		name: "Unit y",
13		parts: [
14			{ name: "CPU", model: "y" },
15			{ name: "Memory", size: "8" }
16		]
17	},
18	{
19		_id: ObjectId(...),
20		name: "Unit z",
21		parts: [
22			{ name: "CPU", model: "z" },
23			{ name: "Memory", size: "2" }
24		]
25	}
26]

Recently I’ve struggle to find a way to sort those document list by nested array of object item, in this case, certain item in parts array.

Mongodb on egig.github.io

MongoDB Sort By Nested Array of Object Item