Constraint and onValidate Differences

[jtan80813]

In your example here: https://conform.guide/tutorial

What's the difference between constraint and onValidate,
Do we still need constraint cause we already have onValidate that would validate our schema on client side.

  const [form, fields] = useForm({
    lastResult,
    constraint: getZodConstraint(schema),
    shouldValidate: 'onBlur',
    shouldRevalidate: 'onInput',
    onValidate({ formData }) {
      return parseWithZod(formData, { schema });
    },
  });

[edmundhung]

The constraints are mostly about accessibility as you are validating with zod. As it is usually coupled with your schema, conform offers an helper that let you infer all the validation attributes only.