Joi Validation Multiple Conditions
I Have the Following Schema: Var testSchema = Joi. Object(). Keys({ a: Joi. String(), B: Joi. String(), C: Joi. String(). When('A', {'Is': 'Avalue', Then: Joi...
I have the following schema:
var testSchema = Joi.object().keys({
a: Joi.string(),
b: Joi.string(),
c: Joi.string().when('a', {'is': 'avalue', then: Joi.string().required()})
});
but I would like to add a condition on c field definition so that it is required when:
a == 'avalue' AND b=='bvalue'
How can I do that?
2 Answers
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'
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