Q:

How can I display another form in a z3c.form button handler?

I have a form with a single text field.
On submit I would like to display another form.
I can use RESPONSE.redirect() and pass it in the query string but I would rather not.
I don't want to use a SESSION variable.
I would like to display a second form which can read this value from the request variable.
I have looked at collective.z3cform.wizard but it is not obvious how to do this.
Trying to call the view() from the button handler does not seem to have any effect.

A:

collective.singing has a non-session based wizard which uses hidden fields to store results of intermediate steps.

