Parameters

• val «Function|any» the default value

Returns:

• «defaultValue»

Example:

Defaults can be either which return the value to use as the default or the literal value itself. Either way, the value will be cast based on its schema type before being set during document creation.

Example:

// values are cast:
const schema = new Schema({ aNumber: { type: Number, default: 4.815162342 }})
const M = db.model('M', schema)
console.log(m.aNumber) // 4.815162342
// default unique objects for Mixed types:
schema.path('mixed').default(function () {
  return {};
});
// if we don't use a function to return object literals for Mixed defaults,
// a "shared" object instance:
schema.path('mixed').default({});
const M = db.model('M', schema);
const m1 = new M;
m1.mixed.added = 1;
console.log(m1.mixed); // { added: 1 }
const m2 = new M;
console.log(m2.mixed); // { added: 1 }