Mongodb从嵌入文档的字段填充字段

Question

How can i populate data of eventTypeId of eventSettings from embedded document events of mySchema

    mySchema : {
            events: {
                  eventSettings: [
                      eventTypeId: { type: ObjectId, ref: 'events'}
                  ]
               }
            }

mySchema is mongoose collection name and events is embedded document

Answer 1

您可以在populate调用中使用点符号来对嵌入式文档执行操作：

MyModel.find().populate('events.eventSettings.eventTypeId').exec(...);