#19189: FormWizard done method can't revisit forms
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Reporter: kenth | Owner: nobody
Type: Uncategorized | Status: new
Component: Uncategorized | Version: 1.4
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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The `FormWizard` `done` method is used for processing information
collected by the form steps. However, it is not currently possible to
revisit the forms to correct a problem which occurs in the `done` step. To
extend the documentation example, it is possible to collect and validate a
credit card (or other payment method) in a form step, but have the card be
'declined' (eg exceeds limit) when processing in `done`. A reasonable
processing flow in this case would be to display the error, and revisit
the payment page for a different payment method. However, the current
implementation of `FormWizard` unconditionally clears its storage after
calling `done`.
I propose that the `done` method be allowed to raise a (newly defined)
`RevalidationError` to cause the Wizard to revisit a form step instead of
clearing storage.
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Ticket URL: <https://code.djangoproject.com/ticket/19189>
Django <https://code.djangoproject.com/>
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