Contact Form Submission Plugin CSV Export Fix

From 4052e4463d14f1516cc5a0efb7a0999960d515b0 Mon Sep 17 00:00:00 2001
From: Daniel Schultheis <d.schultheis@reizwerk.com>
Date: Tue, 20 Jun 2017 10:20:41 +0200
Subject: [PATCH] Fixed Contact Form Submission plugin CSV export. Will now
 save and export empty fields correctly.

---
 .../wp-content/plugins/contact-form-submissions/Submissions.php      | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/wordpress/wp-content/plugins/contact-form-submissions/Submissions.php b/wordpress/wp-content/plugins/contact-form-submissions/Submissions.php
index 7286354..954d999 100644
--- a/wordpress/wp-content/plugins/contact-form-submissions/Submissions.php
+++ b/wordpress/wp-content/plugins/contact-form-submissions/Submissions.php
@@ -157,9 +157,10 @@ class WPCF7Submissions
             $additional_fields = $submission['fields'];
             if (!empty($additional_fields)) {
                 foreach ($additional_fields as $name => $value) {
-                    if (!empty($value)) {
-                        add_post_meta($post_id, 'wpcf7s_posted-' . $name, $value);
+                    if (empty($value)) {
+                        $value = '';
                     }
+                    add_post_meta($post_id, 'wpcf7s_posted-' . $name, $value);
                 }
             }

--
2.7.4