Joi validation multiple conditions
You can concatenate two when rules:
var schema = { a: Joi.string(), b: Joi.string(), c: Joi.string().when('a', { is: 'avalue', then: Joi.string().required() }).concat(Joi.string().when('b', { is: 'bvalue', then: Joi.string().required() }))};
The answer by Gergo Erdosi didn't work with Joi 14.3.0, this resulted in an OR condition:
a === 'avalue' || b === 'bvalue'
The following worked for me:
var schema = { a: Joi.string(), b: Joi.string(), c: Joi.string().when( 'a', { is: 'avalue', then: Joi.when( 'b', { is: 'bvalue', then: Joi.string().required() } ) } )};This results in a === 'avalue' && b === 'bvalue'