Return latest record from subdocument in Mongodb

Question

Let\'s say i want to return the latest inserted document from the subdocument. I want to be able to return the second record within the tags array w/ the _id of

Answer 1

One Simple Solution

Let say we have a category as a document and items as a subdocument.

// find document from collection
const category = await Category.findOne({ _id:'$hec453d235xhHe4Y' });

// fetch last index of sub-document
const lastIndexOfSubDoc: number = category.items.length - 1;
        
// here is the last item of sub-document
console.log(category.items[lastIndexOfSubDoc]);

as mongodb inserted the latest sub-document at last index, so we need to find the last index for the latest sub-doc.