Mongoose Array field with default array containing values

Question

The Mongoose docs suggest overriding the default value of [] for an array field like this:

new Schema({
  toys: {
    type: [ToySchema],
    default: undefined
  }
});

I'd like to have an array of strings, with an enum and with a default value if none is supplied.

Thus, every document has type 'foo' if none is specified, but documents may be 'foo' and 'bar'.

Is that possible?

Answer 1

Although the docs don't mention it, a default value can be given, in the way you'd expect.

You can have an enum array with a default value like this:

new Schema({
  toys: {
    type:[{ type: String, enum: ['foo', 'bar', 'baz'] }],
    default: ['foo']
  }
});