How to return the last push() embedded document

Question

I'm stuck trying to figure out if this is possible.

Using the blog example from mongoose to demonstrate, however my actual use case is slightly more complicated:

var Comments = new Schema({
    title     : String
  , body      : String
  , date      : Date
});

var BlogPost = new Schema({
    author    : ObjectId
  , title     : String
  , body      : String
  , date      : Date
  , comments  : [Comments]
});

var BlogPost = mongoose.model('BlogPost');
var post = new BlogPost();

I need to create a new comment and return the new comment to the client. Having comments as embedded document is really convenient for me and works well. However I don't want to return every single comment to the client each time I add a new one.

post.comments.push({ title: 'My comment' });

As I'm using mongoose if I could some how get the id of the new comment that would help and also allow me to add other functionality such as editing a commenting or deleting a comment.

Is the only way to do this is to have comments as their own collection?

Answer 1

I guess that the problem you're trying to solve is to how to update the page after a client posts a comment, right?

So, you're inserting a new comment. This means that you already have its data. Perform an insert and return the data to the client. Or, better yet, return a simple ack, since client also has full comment data and can render it by itself.