Mongoose: extending schemas

Question

Currently I have two almost identical schemas:

var userSchema = mongoose.Schema({

    email: {type: String, unique: true, required: true, validate: emailVal         


        

Answer 1

To add to this discussion, you can also override mongoose.Schema with a custom base schema definition. For code compatibility, add the if statement that allows a Schema to be instantiated without new. While this can be convenient, think twice before doing this in a public package.

var Schema = mongoose.Schema;

var BaseSyncSchema = function(obj, options) {

    if (!(this instanceof BaseSyncSchema))
        return new BaseSyncSchema(obj, options);

    Schema.apply(this, arguments);

    this.methods.update = function() {
        this.updated = new Date();
    };

    this.add({
        updated: Date
    });
};
util.inherits(BaseSyncSchema, Schema);

// Edit!!!
// mongoose.Schema = BaseSyncSchema; <-- Does not work in mongoose 4
// Do this instead:
Object.defineProperty(mongoose, "Schema", {
    value: BaseSyncSchema,
    writable: false
});