Component Events
Why does Tapestry send a redirect after a form is submitted?
This is an extension of the redirect after post approach. It ensures that after an operation that updates server-side state, such as a form submission, if the user resubmits the resulting page, the operation is not performed a second time; instead just the results of the operation, reflecting the changed server-side state, is re-rendered.
This has the unwanted requirement that any data needed to render the response must persist between the event request (the form submission) and the render request; this often means that fields must be annotated with @Persist.