Error handling in done()

Is there a way to handle errors in done() so that the form data in the storage is not cleared?

If the processing fails, I want to offer the user a possibility to re-process the data without having to re-fill the entire form.

[eagle-r]

I still feel this is would be a valuable feature. For my application, I ended up using an approach similar to that suggested by @dbrgn in https://github.com/django/django-formtools/issues/61#issuecomment-199702599.

This worked quite well for me but for it to work with the current codebase, I had to copy/paste the entire render_done() method and then modify it to catch a ValidationError raised by the done() method. Something along the lines of the code below. It’s not very elegant and is specific to my requirements but it should give you an idea,

        try:
            done_response = self.done(final_forms.values(), form_dict=final_forms, **kwargs)
            self.storage.reset()
            return done_response
        except ValidationError as e:
            form.add_error(None, e)
            return self.render(form)

[HenryMehta]

I still feel this is would be a valuable feature. For my application, I ended up using an approach similar to that suggested by @dbrgn in #61 (comment).

This worked quite well for me but for it to work with the current codebase, I had to copy/paste the entire render_done() method and then modify it to catch a ValidationError raised by the done() method. Something along the lines of the code below. It’s not very elegant and is specific to my requirements but it should give you an idea,

        try:
            done_response = self.done(final_forms.values(), form_dict=final_forms, **kwargs)
            self.storage.reset()
            return done_response
        except ValidationError as e:
            form.add_error(None, e)
            return self.render(form)

This works like a charm