Question

我愿就模式提出质询,但只有在问询与质相符的情况下,才有复方文件。审议下列事项......

var EventSchema = new mongoose.Schema({
    typ : { type: String },
    meta : { type: String }
});

var DaySchema = new mongoose.Schema({
    uid: mongoose.Schema.ObjectId,
    events: [EventSchema],

    dateR: { type: Date,  default : Date.now }

});

function getem() {
    DayModel.find({events.typ :  magic }, function(err, days) {
         // magic. ideally this would return a list of events rather then days    
    });

}

That find operation will return a list of DayModel documents. But what I d really like is a list of EventSchemas alone. Is this possible?

Answer 1

不可能直接挑出事件目标,但你可以限制你问回哪类情况:

DayModel.find({events.typ :  magic }, [ events ], function(err, days) {
   ...
});

然而,你仍需要通过结果从问询所交回的文件中提取实际嵌入的领域。

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