How to find the subdocument via subdocument id in mongoose?

问题

I want to find the subdocument in mongoose by subdocument id.

i am doing :

mainDoc.subDocFieldName.id(sudocId);

But it shows

'cannot find property id of undefined'

seems like mainDoc.subDocFieldName is undefined.

so how do i access the sub document.?

回答1:

I solved this problem by :

mainDoc[subDocFieldName].id(sudocId);

Actually I was using subDocument array.

来源：https://stackoverflow.com/questions/18586391/how-to-find-the-subdocument-via-subdocument-id-in-mongoose