SchemaType.cast()

Parameters

• caster «Function|false» Function that casts arbitrary values to this type, or throws an error if casting failed

Returns:

• «Function»

Get/set the function used to cast arbitrary values to this particular schematype instance. Overrides SchemaType.cast().

Example:

// Disallow `null` for numbers, and don't try to cast any values to
// numbers, so even strings like '123' will cause a CastError.
const number = new mongoose.Number('mypath', {});
number.cast(function(v) {
  assert.ok(v === undefined || typeof v === 'number');
  return v;
});