SPA support questions

[olehmisar]

1. Why is onUpdate used to submit a form in SPA mode without +page.ts? https://superforms.rocks/concepts/spa#without-a-pagets-file
2. How to reset a form after it's submitted?
3. How to reset a form manually?

[ciscoheat]

1. It's the most convenient point to modify the validation result before it's updating the form.
2. The resetForm option for superForm is default true and will reset the form automatically when a successful validation result occurs.
3. Use the reset method on the superForm object.

[olehmisar]

1. I mean, why is onUpdate used instead of onSubmit?

[ciscoheat]

onSubmit happens when the form is submitted, so you can cancel the submission, modify its data, etc. Then the validation occurs, and the result is sent to onUpdate so you can use the form data in a call to an external API, which is common for SPA forms.

[olehmisar]

It does not make sense for me. Sending data to an external api should happen in onSubmit, no? Look at react formik https://formik.org/docs/overview#the-gist

[ciscoheat]

No, it should happen when the data is valid and conveniently at hand, that's in onUpdate. onSubmit happens before the data is validated.