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feat(subscription): filter to short-circuit form processing #1736

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feat(subscription): filter to short-circuit form processing #1736

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17 changes: 17 additions & 0 deletions src/blocks/subscribe/index.php
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Original file line number Diff line number Diff line change
Expand Up @@ -476,6 +476,23 @@ function process_form() {
'newsletters_subscription_method' => 'newsletters-subscription-block',
];

/**
* Filter to allow short-circuiting the newsletter subscription form.
*
* This runs after the honeypot trap and reCAPTCHA validation.
*
* @param bool|WP_Error $preempt Whether to short-circuit the form processing. Default false.
* @param string $email Email address of the reader.
* @param string $name Name of the reader.
* @param array $lists List IDs the reader is subscribing to.
* @param array $metadata Some metadata about the subscription. Always contains `current_page_url`, `newspack_popup_id` and `newsletters_subscription_method` keys.
*/
$preempt = apply_filters( 'newspack_newsletters_subscribe_form_preempt', false, $email, $name, $lists, $metadata );

if ( $preempt ) {
return send_form_response( $preempt );
}

// Handle Mailchimp double opt-in option.
$provider = \Newspack_Newsletters::get_service_provider();
if ( $provider && 'mailchimp' === $provider->service && isset( $_REQUEST['double_optin'] ) && '1' === $_REQUEST['double_optin'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
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