Fix possible error with subscriptions "Uncaught Exception: DatePeriod…

…::__construct(): This constructor accepts either...".
pronamic · Aug 29, 2019 · e8f33a8 · e8f33a8
1 parent 0ea364d
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,7 +5,8 @@ All notable changes to this project will be documented in this file.
 This projects adheres to [Semantic Versioning](http://semver.org/) and [Keep a CHANGELOG](http://keepachangelog.com/).
 
 ## [Unreleased][unreleased]
--
+- Fix possible error with subscriptions "Uncaught Exception: DatePeriod::__construct(): This constructor accepts either...".
+- Improve GF Nested Forms compatibility.
 
 ## [2.1.9] - 2019-08-26
 - Updated packages.

diff --git a/src/PaymentData.php b/src/PaymentData.php
@@ -658,7 +658,7 @@ public function get_subscription() {
 		}
 
 		// Frequency.
-		$frequency = '';
+		$frequency = null;
 
 		switch ( $this->feed->subscription_frequency_type ) {
 			case GravityForms::SUBSCRIPTION_FREQUENCY_FIELD: