How to allow any other key in Joi [duplicate]

问题

This question already has an answer here:

Joi object validation: How to validate values with unknown key names? (1 answer)

Closed 2 years ago.

I have a simple requirement. I tried to search on the internet as well as documentation but failed.
So here is what I want to achieve:

I have a schema:

const schema = Joi.object().keys({
  a: Joi.string().required(),
  b: Joi.string().required()
});

Now, How do I configure it such that any other key in the object would be allowed?

With this schema, it only allows two keys a and b. If I pass any other key, say, c, it throws an error saying that c is not allowed.

回答1:

You can add unknown keys using object.pattern(regex, schema) like this:

const schema = Joi.object().keys({
  a: Joi.string().required(),
  b: Joi.string().required()
}).pattern(/./, Joi.string());

回答2:

The correct answer is actually to use object.unknown(true).

const schema = Joi.object().keys({
  a: Joi.string().required(),
  b: Joi.string().required()
}).unknown(true);

来源：https://stackoverflow.com/questions/49897639/how-to-allow-any-other-key-in-joi