在文档MongoDB中添加到列表

Question

I have a database where I store player names that belong to people who have certain items. The items have and IDs, and subIDs. The way I am currently storing everything is:

Each ID has its own collection

Within the collection there is a document for each subID. The document for each subID is layed out like so:

{ "itemID":itemID, "playerNames":[playerName1, playerName2, playerName3] }

I need to be able to add to the list of playerNames quickly and efficiently.

Thank you!

Answer 1

If I understood your question correctly, you need to add items to the "playerNames" array. You can use one of the following operators:

1. If the player names array will have unique elements in it, use $addToSet
2. Otherwise, use $push