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How to extract only certain data from a collection with Mongoose?

I have a collection with only a name and a number. I would like to extract only the number out of it and change it / put it in a variable. How would I do either of those?

name

number

let dataSchema = new mongoose.Schema(
name: String,
views: Number
)

let Views = mongoose.model("View", dataSchema);


1 Answer
1

You can pass a second argument to the find() method indicating the fields that must be returned.

Views.findOne(, views: true , (err, doc) =>
if (!err)
// doc.views

);


Edit

There are several other options for limiting the returned fields with mongoose

Pass space-separated field names:

Views.findOne(query, "views", callback)


Using select() method:

select()

Views.findOne(query).select('views').exec(callback);


Views.findOne(query).select( views: 1 ).exec(callback);


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