function process_order_paypal_standard()
{
if (!empty($_REQUEST['learn-press-transaction-method']) && 'paypal-standard' == $_REQUEST['learn-press-transaction-method']) {
// if we have a paypal-nonce in $_REQUEST that meaning user has clicked go back to our site after finished the transaction
// so, create a new order
if (!empty($_REQUEST['paypal-nonce']) && wp_verify_nonce($_REQUEST['paypal-nonce'], 'learn-press-paypal-nonce')) {
if (!empty($_REQUEST['tx'])) {
//if PDT is enabled
$transaction_id = $_REQUEST['tx'];
} else {
if (!empty($_REQUEST['txn_id'])) {
//if PDT is not enabled
$transaction_id = $_REQUEST['txn_id'];
} else {
$transaction_id = NULL;
}
}
if (!empty($_REQUEST['cm'])) {
$transient_transaction_id = $_REQUEST['cm'];
} else {
if (!empty($_REQUEST['custom'])) {
$transient_transaction_id = $_REQUEST['custom'];
} else {
$transient_transaction_id = NULL;
}
}
if (!empty($_REQUEST['st'])) {
//if PDT is enabled
$transaction_status = $_REQUEST['st'];
} else {
if (!empty($_REQUEST['payment_status'])) {
//if PDT is not enabled
$transaction_status = $_REQUEST['payment_status'];
} else {
$transaction_status = NULL;
}
}
if (!empty($transaction_id) && !empty($transient_transaction_id) && !empty($transaction_status)) {
$user = learn_press_get_current_user();
try {
//If the transient still exists, delete it and add the official transaction
if ($transaction_object = learn_press_get_transient_transaction('lpps', $transient_transaction_id)) {
learn_press_delete_transient_transaction('lpps', $transient_transaction_id);
$order_id = $this->get_order_id($transaction_id);
$order_id = learn_press_add_transaction(array('order_id' => $order_id, 'method' => 'paypal-standard', 'method_id' => $transaction_id, 'status' => $transaction_status, 'user_id' => $user->ID, 'transaction_object' => $transaction_object['transaction_object']));
wp_redirect(($confirm_page_id = learn_press_get_page_id('taken_course_confirm')) && get_post($confirm_page_id) ? learn_press_get_order_confirm_url($order_id) : get_site_url());
die;
}
} catch (Exception $e) {
return false;
}
} else {
if (is_null($transaction_id) && is_null($transient_transaction_id) && is_null($transaction_status)) {
}
}
}
}
wp_redirect(get_site_url());
die;
}
/**
* Action when user press the "Take this course" button
*
* @param $course_id
* @param string $payment_method
*/
function learn_press_take_course($course_id, $payment_method = '')
{
$user = learn_press_get_current_user();
$can_take_course = apply_filters('learn_press_before_take_course', true, $user->ID, $course_id, $payment_method);
if ($can_take_course) {
if (learn_press_is_free_course($course_id)) {
if ($order_id = learn_press_add_transaction(array('method' => 'free', 'method_id' => '', 'status' => '', 'user_id' => $user->ID, 'transaction_object' => learn_press_generate_transaction_object()))) {
learn_press_update_order_status($order_id, 'Completed');
learn_press_add_message('message', __('Congratulations! You have enrolled this course'));
$json = array('result' => 'success', 'redirect' => ($confirm_page_id = learn_press_get_page_id('taken_course_confirm')) && get_post($confirm_page_id) ? learn_press_get_order_confirm_url($order_id) : get_permalink($course_id));
learn_press_send_json($json);
}
} else {
if (has_filter('learn_press_take_course_' . $payment_method)) {
$order = null;
$result = apply_filters('learn_press_take_course_' . $payment_method, $order);
$result = apply_filters('learn_press_payment_result', $result, $order);
if (is_ajax()) {
learn_press_send_json($result);
exit;
} else {
wp_redirect($result['redirect']);
exit;
}
} else {
wp_die(__('Invalid payment method.', 'learn_press'));
}
}
} else {
learn_press_add_message('error', __('Sorry! You can not enroll to this course'));
$json = array('result' => 'error', 'redirect' => get_permalink($course_id));
echo '<!--LPR_START-->' . json_encode($json) . '<!--LPR_END-->';
}
}