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Required If

Check if the input value is not empty if another input has a specific value.

The validation rule does not require a value to run.

Example​

src/app/orders/controllers/checkout.ts
// ...
createPost.validation = {
  rules: {
    creditCardNumber: ["requiredIf:paymentMethod,creditCard"],
  },
};

In this case, the creditCardNumber input will be required if the paymentMethod input has a value of creditCard.

It can also receive an array of values:

src/app/orders/controllers/checkout.ts
// ...
createPost.validation = {
  rules: {
    creditCardNumber: ["requiredIf:paymentMethod,creditCard,debitCard"],
  },
};