const rules = {
state: 'required_when:country,US'
}
// or
const rules = {
state: [
rule('required_when', ['country', 'US'])
]
}The field is checked for required validation, when expected field value is same as the expected value.
{}, [], '', null, undefined are considered as empty values.
const rules = {
state: 'required_when:country,US'
}
// or
const rules = {
state: [
rule('required_when', ['country', 'US'])
]
}For customized build, you can import this rule as follows.
import { requiredWhen } from 'indicative/builds/validations'