typescriptnext.jsreact-hook-formzodshadcnui

Shadcn, React-hook-form, Zod resolver throwing Runtime error when zod validation fails


I am using Shadcn Form which uses React-Hook-Form and Zod Resolver, The problem is when i submit the form by clicking the button while making the input incorrect for testing (Putting 1 char on 2 char validation), I am getting a Runtime ZodError, showing the Zod schema validation error like this, Instead of populating the component. I don't know is it some version issues or something. zod^4.0.17, react-hook-form^7.54.1, @hookform/resolvers^3.9.1

{
 "origin": "string",
 "code": "too_small",
 "minimum": 2,
 "inclusive": true,
 "path": [
   "username"
 ],
 "message": "Username must be at least 2 characters."
}

Example code,

'use client';

import { zodResolver } from '@hookform/resolvers/zod';
import { useForm } from 'react-hook-form';
import { z } from 'zod';

import { Button } from '@/components/ui/button';
import {
  Form,
  FormControl,
  FormDescription,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from '@/components/ui/form';
import { Input } from '@/components/ui/input';

const formSchema = z.object({
  username: z.string().min(2, {
    message: 'Username must be at least 2 characters.',
  }),
});

function TestPage() {
  // 1. Define your form.
  const form = useForm<z.infer<typeof formSchema>>({
    resolver: zodResolver(formSchema),
    defaultValues: {
      username: '',
    },
  });

  // 2. Define a submit handler.
  function onSubmit(values: z.infer<typeof formSchema>) {
    // Do something with the form values.
    // ✅ This will be type-safe and validated.
    console.log(values);
  }

  return (
    <Form {...form}>
      <form className="space-y-8" onSubmit={form.handleSubmit(onSubmit)}>
        <FormField
          control={form.control}
          name="username"
          render={({ field }) => (
            <FormItem>
              <FormLabel>Username</FormLabel>
              <FormControl>
                <Input placeholder="shadcn" {...field} />
              </FormControl>
              <FormDescription>
                This is your public display name.
              </FormDescription>
              <FormMessage />
            </FormItem>
          )}
        />
        <Button type="submit">Submit</Button>
      </form>
    </Form>
  );
}
export default TestPage;


Solution

  • I found the issue, It is happening because version mismatch, I am using zod^4.0.17 and @hookform/resolvers^3.9.1. When i update the @hookform/resolvers^5.2.1 (latest) Its working fine.