Default value not set while using Update with Upsert as true

Question

I have the following model for users:

var UserSchema = new mongoose.Schema({

    name: String,
    dob: Date,
    sex: String,
    photo: String,
    email:         


        

Answer 1

findOneAndUpdate simply sends a MongoDB findAndModify request (see findOneAndUpdate). What this means is that it skips all the mongoose magic involved with the schema setters, getters, defaults, etc. Validation is only run on create/save so the way around this is to do a .findOne(), check existence/create a new one, and then .save().

see this issue for more discussion

EDIT:

In regards to the first question about changing the date each time, you could change the schema a bit. Get rid of the default value, and instead add this after declaring the schema:

UserSchema.pre("save", function (next) {
    if (!this.created) {
        this.created = new Date();
    }
    next();
});

That will only create a date if the created: value is not present, and should prevent it from changing the creation date each time (when using .save()).

see Mongoose middleware