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Error handling
==============
Errors returned after failed validation contain an `errors` object
holding the actual ValidatorErrors. Each ValidatorError has a `type` and `path` property
providing us with a little more error handling flexibility.
var ToySchema = new Schema({
color: String
, name: String
});
var Toy = db.model('Toy', ToySchema);
Toy.schema.path('name').validate(function (value) {
return /blue|green|white|red|orange|periwinkel/i.test(value);
}, 'Invalid color');
var toy = new Toy({ color: 'grease'});
toy.save(function (err) {
// previous behavior (v1x):
console.log(err.errors.color)
// prints 'Validator "Invalid color" failed for path color'
// new v2x behavior - err.errors.color is a ValidatorError object
console.log(err.errors.color.message)
// prints 'Validator "Invalid color" failed for path color'
// you can get v1 behavior back by casting error.color toString
console.log(String(err.errors.color))
// prints 'Validator "Invalid color" failed for path color'
console.log(err.errors.color.type);
// prints "Invalid color"
console.log(err.errors.color.path)
// prints "color"
console.log(err.name)
// prints "ValidationError"
console.log(err.message)
// prints "Validation failed"
});
BTW, the `err.errors` object is also available on the model instance.
toy.errors.color.message === err.errors.color.message
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