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Dynamic forms with discriminatedUnion and React Hook Form

  • Form validation is a crucial aspect of modern web applications.
  • This article explains how to use both Zod and RHF to validate dynamic forms, including those with complex structures such as payment methods.
  • DiscriminatedUnion is an advanced typing technique used to model objects with different structures but sharing a common discriminating field.
  • Each payment method specific rules that must not interfere with each other interfere.
  • Allows new types to be added easily, ensuring that any invalid values are detected at validation time.
  • React Hook Form makes it easy to manage forms while remaining high-performance and flexible.
  • GetErrorsByPaymentType() method helps to separate the errors with their fields using their payment types.
  • The article provides an example of payment form validation using discriminatedUnion and React Hook Form.
  • Zod and RHF dynamically adapt validation according to the type field, simplifying the logic in the form.
  • This utility type can be used in many ways, and it is highly recommended in dealing with validation and other scenarios.

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