Set the form field in CF7 actions and pass it to the landing page

I have hidden input in my form:

[hidden my-field]

My goal is to have this field set (some data from external API) after the user clicks submit. I also want to be able to access this variable on the “Thank you page” that the user will be redirected to after submitting the form.

I have added an action:
“Actions -> Submission Actions -> type: Redirect”
Select a page: Thank you page
with these settings switched to ON:
– Redirect as X-WWW-FORM-URLENCODED (Form Post)
– Pass all the fields from the form as URL query parameters

This is the code of the “Thank you page” I’m redirected to:

<?php echo $_POST['my-field']; ?>

If I set the my-field in the wpcf7_posted_data action then everything works fine and I can see the variable on the “Thank you page”:

add_action('wpcf7_posted_data', 'my_fun', 10, 1);

function my_fun($form_data) {
  $form_data['my-field'] = $_POST['my-field'] = 'some value';
  return $form_data;
}

The problem is that this action is called before validation. After validation, these two actions are called:

add_action('wpcf7_before_send_mail', 'my_fun', 10, 3);

function my_fun($cf7, $abort, $submission) {
  $_POST['my-field'] = 'some value';
  return $cf7;
}

add_action('wpcf7_submit', 'my_fun', 10, 3);

function my_fun($cf7, $result) {
  $_POST['my-field'] = 'some value';
}

…but then on the “Thank you page” I can’t access the $_POST[‘my-field’] variable. Why your plugin, when redirecting to the landing page, does not pass the fields set in the wpcf7_before_send_mail and wpcf7_submit actions? How can I achieve it?

• This topic was modified 1 year, 8 months ago by pepe80.