mongodb - How to populate fields after mapReduce with Mongoose.js? -

mongodb - How to populate fields after mapReduce with Mongoose.js? -

i want populate fields after mapreduce.

mongoose.connection.db.collection('createdcollectionnameforresults', function(err, collection) { collection.find({}).populate('ref_field').toarray(function(err, items) { res.send(200, items) }); });

but here, gives error:

typeerror: object # has no method 'populate'

because collection.find({}) returns mongodb cursor. how can populate ref_field?

considering have schema registered in mongoose named 'createdcollectionnameforresults'

var model = mongoose.model('createdcollectionnameforresults'); model.find({}).populate('ref_field').exec(function(err, results){ console.log(err, results); });

mongodb mapreduce mongoose