[英]Mongoose populate returns empty array but returns data without populate
我正在尝试获取约会,并用用户详细信息和医生详细信息填充它们。 我有这样的模式
let appointmentSchema = new Schema({
reason: String,
start: DateType,
end: DateType,
appointmentStamp: Number,
userId: {
type: ObjectId,
ref: 'User'
},
doctorId: {
type: ObjectId,
ref: 'Doctor'
},
approved: Boolean,
held: Boolean,
timeOfAcceptance: Number,
createdOn: { type: Number, default: (new Date().getTime()) },
updatedAt: Mixed
}, {runSettersOnQuery: true})
而在跑步
Appointment.find({userId: authId}).populate('userId doctorId').exec()
我得到一个空数组,但是Appointment.find({userId:authId})。exec()返回该用户的所有约会,并提供了提供的userId,这是我错过的事情
这是样品预约
{
"_id": "5a0d424079191657fca9e853",
"reason": "Say Hello",
"approved": false,
"held": false,
"doctor": "5a0add9b577d7916187cd9f2",
"patient": "59f5df20a3071554c5f843e1",
"appointmentStamp": 1510927380000,
"__v": 0,
"createdOn": 1510817910134
}
我尝试了一下,它奏效了,不知道为什么
patient: {
type: String,
ref: 'patient'
},
doctor: {
type: String,
ref: 'doctor'
}
我使用的是String类型,而不是ObjectId,查询就像
Appointment.find({patient: authId, canceled: false})
.populate('patient doctor').exec()
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