how do I access to collection's data size through mongoose?

[Jae hyun yoo]

Hi,

how do I get mongodb's collection method datasize() with mongoose?

var Post = db.model('Post', {

body    :    { type: String, required: true },

place   :   { type: String, required: true },

location:    { type: String, required: true },

date    :   { type: Date,   required: true, default: Date.now }

});

Post.datasize()  doesnt seems to work.

All I want to do is to check was there any kinds of modification to a collection.

(e.g. data update, delete, save to collection)

Please help me!