Update And Return Document In Mongodb

Question

I want to get updated documents. This is my original code and it succesfully updates but doesnt return the document.

collection.update({ \"code\": req.bo         


        

Answer 1

Could not find any way to update many and return the modified records in docs, so I made a workaround.

At least one fault that I can find with below method is, you would not be able to tell if document is modified or already had the value that you are using:

function findAndUpdateMany(filter, updateOptions) {
  return collection.find(filter).project({_id: 1}).toArray()
    .then(function(matchingIds) {
      filter = {_id: {$in: matchingIds}}
      return collection.updateMany(filter, updateOptions)
    }).then(function() {
      return collection.find(filter).toArray()
    })
}