in mongoose, how to select the fields in a array property

in Mongoose, I have such a schema

var schema= mongoose.Schema({
         name:String,
         age:String
         likes: [{ type:String, price:String}]                       
});

As in the mongoose, the option in the Model.find(conditions, [fields], [options], [callback]) gives us a choice to select the fields we need. However in my schema, there is a array property 'likes', and in the query, I only want to select only one property type rather than all of them, how can I make this query ?

---

我真的发现了它，只是通过

Model.findOne({ 'name': name }, 'name age likes.type', callback);

---

For find() you need to use select() chain call, something like this:

Model.find({ name: name }).select('name age likes.type').exec(function() {

});

Or

Model.find({ name: name }).select({ 'name': 1, 'age': 1, 'likes.type': 1 }).exec(function() {

});

More examples here in Mongoose docs

Don't forget to use cursor for traversing over large amounts of data (it's described in the Streaming section of the docs).

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