From 6b86c5f78d879aad57c66b5a5ab206055cf30247 Mon Sep 17 00:00:00 2001
From: Jannes Bolling <jbolling@virtualcitysystems.de>
Date: Mon, 19 Oct 2020 10:37:13 +0200
Subject: [PATCH] recreate old during filter behaviour for
 backwardscompatibility

---
 src/ol/format/WFS.js            | 2 +-
 test/spec/ol/format/wfs.test.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ol/format/WFS.js b/src/ol/format/WFS.js
index f0983b1f04..aadbe7ec68 100644
--- a/src/ol/format/WFS.js
+++ b/src/ol/format/WFS.js
@@ -1105,7 +1105,7 @@ function writeDuringFilter(node, filter, objectStack) {
   const context = parent['context'];
   const version = context['version'];
 
-  writePropertyName(version, node, filter.propertyName);
+  writeExpression(FESNS[version], 'ValueReference', node, filter.propertyName);
   const timePeriod = createElementNS(GMLNS, 'TimePeriod');
 
   node.appendChild(timePeriod);
diff --git a/test/spec/ol/format/wfs.test.js b/test/spec/ol/format/wfs.test.js
index fc30e14e5d..45be23a0ac 100644
--- a/test/spec/ol/format/wfs.test.js
+++ b/test/spec/ol/format/wfs.test.js
@@ -735,7 +735,7 @@ describe('ol.format.WFS', function () {
         '    typeName="states" srsName="EPSG:4326">' +
         '  <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">' +
         '    <ogc:During>' +
-        '      <ogc:PropertyName>date_prop</ogc:PropertyName>' +
+        '      <fes:ValueReference xmlns:fes="http://www.opengis.net/fes">date_prop</fes:ValueReference>' +
         '      <gml:TimePeriod xmlns:gml="http://www.opengis.net/gml">' +
         '        <gml:begin>' +
         '          <gml:TimeInstant>' +