Push items into mongo array via mongoose

Question

I\'ve scoured SO a good bit looking for the answer but I\'m sure that I\'m lost for the right words to describe what I\'m after.

Basically I have a mongodb collection

Answer 1

The $push operator appends a specified value to an array.

{ $push: { : , ... } }

$push adds the array field with the value as its element.

Above answer fulfils all the requirements, but I got it working by doing the following

var objFriends = { fname:"fname",lname:"lname",surname:"surname" };
Friend.findOneAndUpdate(
   { _id: req.body.id }, 
   { $push: { friends: objFriends  } },
  function (error, success) {
        if (error) {
            console.log(error);
        } else {
            console.log(success);
        }
    });
)