Mongoose schemas not picking up new properties

Question

I have this mongoose schema, I added updated_by and created_by, but for some reason when I save models from client to server, those fields aren't visible:

   userSchema = mongoose.Schema({
            role: {
                type: String,
                enum: ['Admin', 'Owner', 'User']
            },
            username: {
                type: String,
                unique: true,
                required: true,
                validate: [validation.usernameValidator, 'not a valid username']
            },
            passwordHash: {
                type: String,
                required: true,
                validate: [validation.passwordValidator, 'not a valid password']
            },
            email: {
                type: String,
                unique: true,
                required: true,
                validate: [validation.emailValidator, 'not a valid email address']
            },
            firstName: {
                type: String,
                required: false
            },
            lastName: {
                type: String,
                required: false
            },
            registered_at: {
                type: Date,
                default: Date.now
            },
            created_by: {
                type: String,
                required: false
            },
            updated_by: {
                type: String,
                required: false
            },
            created_at: {
                type: Date,
                default: Date.now
            },
            updated_at: {
                type: Date,
                default: Date.now
            }
        },
        {
            autoIndex: false
        });

is this normally a problem? Do I have to somehow rebuild something with Mongoose or MongoDB in order for them to pick up the new properties on this model?

Of course, I did restart the mongoDB server, but that didn't do anything.

Answer 1

In any case, if you save your User model, the fields with actual values shown in MongoDB will be the ones you set a value for yourself when saving the model OR the fields with a default value set in your userSchema.

So, just to clarify on this:

    address: { type: String, default: ' ' } 

will be shown in MongoDB with a value of ' ' unless you set a specific address when saving your User model.

But,

    address: String

will NOT be shown in MongoDB unless you set a specific address when saving your User model.

EDIT Thanks to Matthew for pointing it out, actually upsert behavior is indeed the following:

If upsert is true and no document matches the query criteria, update() inserts a single document.