如何为有孩子的房产分配"null"或"undefined" ， 在猫鼬

Question

如果我没有在猫鼬中初始化它，我想制作"地址"属性" null"或" undefined"。我试图将其初始化为零值，但无效。

var userSchema = new Schema({
    name: { type: String, default: null },
    address: {
      number: { type: String, default: null },
      route: { type: String, default: null },
      areaInner: { type: String, default: null },
      areaOuter: { type: String, default: null },
      country: { type: String, default: null }
    }
},{timestamps:true});
var User = mongoose.model('users', userSchema);
var newUser = User({
        name: name,
        address:null
});
newUser.save();

Answer 1

您必须为"地址"定义其他模式：

var addressSchema = new Schema({
  number: {type: String, default: null},
  ...
}); 
var userSchema = new Schema({
  name: {type: String, default: null},
  address: {type: addressSchema, default: null}
});