In a multi-step Drupal webform, is it possible to show a value entered in a previous-step page?
For example, the first step page captures a username field as "John", is it possible to show a greeting in next step page, showing Hello John, ... ?
p.s. for anonymous user.
I know this is old, but I needed the same thing so I hope this helps others in search.
I needed values from a previous Webform step for my custom Webform component. The _webform_redner_[component](...) hook doesn't provide the form or form_state, also the previous steps' data (more than previous step that was just submitted) isn't in the $_POST.
To solve this, I manually retrieve the form from Drupal's form caching system using the form_build_id which is in the $_POST variable.
/* ... */
$form_state = array();
// Get the form_state to pass on to our build function.
// Webforms doesn't provide it at this point so we'll need to manually get it using the form's build_id.
$form = form_get_cache($_POST['form_build_id'], $form_state);
/* ... */
You now have the entire form and form_state that also includes previous steps' values.
Have a look at multistep form example here: http://drupal.org/node/717750
The general idea is that in the submit function you save all posted values to $form_state['storage'], which you can later access on the next steps.
Edit: Have a look at the example with both Prev and Next buttons I have just created: http://zgadzaj.com/basic-drupal-multipart-form-example-with-previous-and-next-buttons
