1) How do I keep a user from submitting the form
twice?
You display something else.
Sorry for not being clear. I am displaying something else, but I also want
to prevent the user from using the back button to submit a form twice. Is
that possible with a Pier component?
Well, you can't prevent the back button, but your model could detect a
double submit and inform the user.
Cheers,
Lukas
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Lukas Renggli