Using Mongoose / MongoDB $addToSet functionality on array of objects

Question

say I have this array property (\'articles\') on a Mongoose schema:

articles: [ 

 {
  kind: \'bear\',
  hashtag: \'foo\'    
 },

 {
  kind: \'llama\',
  ha         


        

Answer 1

// add the comment's id to the commentsList : 
                        // share.comments.commentsList.addToSet(callback._id);
                        share.update(
                            { '$push': {'comments.commentsList':  mongoose.Types.ObjectId(callback._id) } }
                        , function(){
                            console.log('added comment id to the commentsList array of obectIds')
                        })