小编Jus*_*tin的帖子

我刚刚发现了 Mongoose 的 Populate Virtuals 方法，它将为我当前的项目节省大量时间。不过，我希望进一步扩展它。有没有一种基于多个本地/外键对进行填充的简单方法？这是代码可能是什么样子的示例（注意：这可能不是一个很好的示例，但希望它传达了我的问题的基础）。

var workerSchema = new Schema({
    name: String,
    locationCode: String,
    departmentCode: String
});

var deparmentSchema = new Schema({
    locationCode: String,    //Note: neither location nor code
    code: String,            //are unique, but the combination of them are
    manager: String,
    otherInfoAboutDepartment: String
});

workerSchema.virtual('department', {
    ref: "Department",
    localField: ["locationCode", "departmentCode"],
    foreignField: ["locationCode", "code"]
});