Field error

In this example, we return a server-side field error if the email is already taken.

import { InputError } from 'composable-functions'

const schema = z.object({
  email: z.string().min(1).email(),
  password: z.string().min(1),
})

const takenEmails = ['[email protected]', '[email protected]']

const mutation = applySchema(schema)(async (values) => {
  if (takenEmails.includes(values.email)) {
    throw new InputError('Email already taken', ['email'])
  }

  return values
})

export const action = async ({ request }: Route.ActionArgs) =>
  formAction({ request, schema, mutation })

export default () => <SchemaForm schema={schema} />