Dependent Validation
Validate a field based on the value of another field.
Usage
'use client'
import { useForm } from 'react-hook-form'
import { toast } from '@workspace/ui/components/Sonner'
import { z } from '@workspace/lib/validation'
import { Button } from '@workspace/ui/components/Button'
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@workspace/ui/components/Form'
import { Input, PasswordInput } from '@workspace/ui/components/Textfield'
interface FormInputs {
email: string
name: string
password: string
confirmPassword: string
}
export function RecDependantValidation() {
const form = useForm<FormInputs>()
const onSubmit = (data: FormInputs) => {
toast.neutral({
title: 'You submitted the following values',
description: <code>{JSON.stringify(data)}</code>,
})
}
return (
<Form {...form}>
<form onSubmit={form.handleSubmit(onSubmit)} className="space-y-4 w-full">
<h2 className="text-xl font-semibold">Register</h2>
<FormField
control={form.control}
name="email"
rules={{ validate: z.string().email().validateFn() }}
render={({ field }) => (
<FormItem>
<FormLabel>Email</FormLabel>
<FormControl>
<Input {...field} placeholder="Enter your email" />
</FormControl>
<FormMessage />
</FormItem>
)}
/>
<FormField
control={form.control}
name="password"
rules={{ validate: z.string().min(6).validateFn() }}
render={({ field }) => (
<FormItem>
<FormLabel>Password</FormLabel>
<FormControl>
<PasswordInput {...field} placeholder="Enter your password" />
</FormControl>
<FormMessage />
</FormItem>
)}
/>
<FormField
control={form.control}
name="confirmPassword"
rules={{
validate: z
.string()
.min(6)
.and(
z.literal(form.watch('password'), {
errorMap: () => ({ message: "Passwords don't match" }),
}),
)
.validateFn(),
}}
render={({ field }) => (
<FormItem>
<FormLabel>Confirm Password</FormLabel>
<FormControl>
<PasswordInput {...field} type="password" placeholder="Confirm your password" />
</FormControl>
<FormMessage />
</FormItem>
)}
/>
<Button type="submit" className="w-full">
Register
</Button>
</form>
</Form>
)
}