How to validate array of objects using Joi?

Question

I am getting an array of objects to backend, where each object contains a service name. The structure looks like below

[{\"serviceName\":\"service1\"},
{\"s         


        

Answer 1

For Joi you can use below which is working fine for me, this will validate that array must have at-least on object with key serviceName-

const Joi = require('joi');
const itemsArray = Joi.array().items(
            Joi.object({
                serviceName: Joi.string().required(),
            })
        ).min(1).required();

        const itemSchema = Joi.array().items(itemsArray).when('checkout_type', {
            is: 'guest',
            then: Joi.array().required(),
        }).required();

let schema = Joi.object().keys({
        items: Joi.alternatives().try(itemsArray, itemSchema).required(),
    });