How to add checkbox for newsletter subscription to contact form like demo?

Hi together,

Long time since a last answer, but the question is also interresting for me.

MC4WP has a possibility to add a checkbox to any kind of contact forms here but it won’t take the relevant data out.

I am just in contact with the support of mc4wp and they meant the problem of not taking the data are the field names ‘Enfold’ is using in their contact form. E.g. ‘avia_1_1’ etc.

They sent me a possible solution to add to funtions.php of my child theme. But it is still not working. Here the code:

/**
 * This will send additional Custom-Form fields to MailChimp.
 *
 * To add more fields, change the $field_map variable and use the following format:
 *
 *      Custom-Form field => MailChimp field.
 *
 * Example:
 *
 *      "avia_1_1" => "LNAME"
 *
 * This means that the Custom-Form "avia_1_1" field will be sent to the "LNAME" field in MailChimp.
 *
 * @return array
 */
add_filter( 'mc4wp_integration_custom_data', function( $data ) {
    // map of Custom-Form field names => MailChimp field names
	$field_map = array(
		'avia_1_1' => 'LNAME',
		'avia_2_1' => 'FNAME',
		'avia_3_1' => 'EMAIL'
	);
	foreach( $field_map as $my_field => $mailchimp_field ) {
		if( ! empty( $_POST[ $my_field ] ) ) {
			$data[ $mailchimp_field ] = sanitize_text_field( $_POST[ $my_field ] );
		}
	}
	return $data;
} );

Any ideas?

Cheers
Dieter

Hey,
Has anyone found a solution to this. I would really appreciate a hint.

Thanks
Martin

I found the Solution. The element name changed / or is: element_avia_1_1 and element_avia_2_1

• This reply was modified 6 years, 3 months ago by edfaber.