峰哥的技術日誌

var OrderSchema = new Schema({
    orderId: { type: String, required: true },
    createdDate: { type: Date, required: true },
    ...
    paymentType: {
        type: String,
        subType: String
    },
    paymentResult: {
        ...
    },
    _user: { type: Schema.Types.ObjectId, ref: 'User', required: true}
});

var newOrder = new DB.Order({
    orderId: orderId,
    createdDate: new Date().getTime(),
    paymentType: {
        type: 'CREDIT',
        subType: 'INSTANT'
    },
    paymentResult: {
        ......
    },
    _user: user._id
});
newOrder.save(function(err) { console.log(err); });

{ [ValidationError: Order validation failed]
  message: 'Order validation failed',
  name: 'ValidationError',
  errors: 
   { paymentType: 
      { [CastError: Cast to String failed for value "[object Object]" at path "paymentType"]
        message: 'Cast to String failed for value "[object Object]" at path "paymentType"',
        name: 'CastError',
        kind: 'String',
        value: [Object],
        path: 'paymentType' } } }

createdDate: { type: Date, required: true },
....
paymentType: {
    type: String,
    subType: String
},

createdDate: { type: Date, required: true },
....
paymentType: {
    type: { type: String } ,
    subType: { type: String }
},

{
  "name": "MyApp",
  "version": "1.0.2",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "body-parser": "^1.8.4",
    "mongoose": "*"
    ...
  }
}