javascript - Joi Validation || In an array of object, at least one object should contain a particular value of a key

Question

I need a schema for below array of object:

option = [
    {
        answer: '',
        isTrue: false
    },
    {
        answer: '',
        isTrue: true
    },
]

So far I wrote below schema:

Joi.array().items(Joi.object({
   answer: Joi.string().required(),
   isTrue: Joi.boolean().required()
}).unknown()).min(2).required()

Problem: I need to verify atleast one object should have "isTrue" key's value to be "true" (boolean)

Answer 1

等待大神答复