Mongoose complex (async) virtuals

asynchronous, mongodb, mongoose, node.js, virtual

Solution

This is probably best handled as an instance method you add to `teamSchema` so that the caller can provide a callback to receive the async result:

teamSchema.methods.getSquad = function(callback) {
  Players.find({ team_id: this._id }, callback);
});

Problem

I have two mongoose schemas as follow: ``` var playerSchema = new mongoose.Schema({ name: String, team_id: mongoose.Schema.Types.ObjectId }); Players = mongoose.model('Players', playerSchema); var teamSchema = new mongoose.Schema({ name: String }); Teams = mongoose.model('Teams', teamSchema); ``` When I query Teams I would to get also the virtual generated squad: ``` Teams.find({}, function(err, teams) { JSON.stringify(teams); /* => [{ name: 'team-1', squad: [{ name: 'player-1' } , ...] }, ...] */ }); ``` but I can't get this using virtuals, because I need an async call: ``` teamSchema.virtual('squad').get(function() { Players.find({ team_id: this._id }, function(err, players) { return players; }); }); // => undefined ``` What is the best way to achieve this result? Thanks!

Original source