Theo's Typesafe Cult•12mo ago

Zod validation with react-hook-form

Is there a way to validate form field for multiple errors simultaneosly? My use case is password strength indicator where I need to validate password for 3 validation criteria (length, contains digit, contains special symbol) at the same time. I am using zod and my schema is like this:

import { z } from "zod";

export const schema = z
  .object({
    old_password: z.string().min(1, { message: "Required" }),
    new_password: z
      .string()
      .min(8, { message: "Min 8 characters" })
      .regex(/[0-9]/g, { message: "Need a digit" })
      .regex(/[!,@,#,$,%,^,&,*]/g, {
        message: "Need a special character !@#$%^&*",
      }),
    confirm_new_password: z.string(),
  })
  .refine((data) => data.confirm_new_password === data.new_password, {
    message: "Should be equal to new password",
    path: ["confirm_new_password"],
  });
export type Schema = z.infer<typeof schema>;

import { z } from "zod";

export const schema = z
  .object({
    old_password: z.string().min(1, { message: "Required" }),
    new_password: z
      .string()
      .min(8, { message: "Min 8 characters" })
      .regex(/[0-9]/g, { message: "Need a digit" })
      .regex(/[!,@,#,$,%,^,&,*]/g, {
        message: "Need a special character !@#$%^&*",
      }),
    confirm_new_password: z.string(),
  })
  .refine((data) => data.confirm_new_password === data.new_password, {
    message: "Should be equal to new password",
    path: ["confirm_new_password"],
  });
export type Schema = z.infer<typeof schema>;

But the problem is that I am only getting 1 error at a time (in react-hook-forms form.formState.errors) as I defined above. I tried to use z.union and even z.superRefine but to no avail.

7 Replies

alexmartos•12mo ago

Found this PR https://github.com/react-hook-form/react-hook-form/pull/750 Try using criteriaMode instead

GitHub

support multiple errors for ErrorMessage component by kotarella1110...

Add render prop (children prop) with message and messages as arguments! Related PR: #715 export default function App() { const { register, errors, handleSubmit } = useForm<{ password: stri...

GoldStrikeArch•12mo ago

@alexmartos Do you know how to implement this? I mean I am only getting a single error inside form.formState.errors ?

alexmartos•12mo ago

I made a fast implementation here: https://stackblitz.com/edit/stackblitz-starters-wttzqu?file=app%2Fpage.tsx

Alex Martos P.

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alexmartos•12mo ago

Try commenting out criteriaMode and it shold only warn about 1 error

GoldStrikeArch•12mo ago

@alexmartos Oh, I see, thank you! This is really helpful But this solutions doesn't seem flexible at all Like if I need some fields to show all errors and other fields to show only first error, then I think I would need to use 2 different useForm hooks...

alexmartos•12mo ago

If I remember correctly, you always get the first error as normal under ‘error.message’ if you have multiple errors those are under ‘error.types’ So you could use this solution for both all and first

GoldStrikeArch•12mo ago

Yes, I see. You are correct this should solve my case

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Zod validation with react-hook-form