write null to an attribute

sammachin · Jan 16, 2025 · 2ccc3a7 · 2ccc3a7
1 parent 0c95182
commit 2ccc3a7
Show file tree

Hide file tree

Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/write_attribute.html b/write_attribute.html
@@ -25,7 +25,7 @@
         },
         oneditprepare: function() {
             $('#node-input-data').typedInput({
-                types: ['str', 'num', 'msg', 'flow', 'global', 'jsonata', 'env'],
+                types: ['str', 'num', 'msg', 'flow', 'global', 'jsonata', 'env', {value: 'null', label: 'null', hasValue: false}],
                 typeField: $('#node-input-dataType')
             });
 

diff --git a/write_attribute.js b/write_attribute.js
@@ -12,7 +12,12 @@ module.exports =  function(RED) {
         node.cluster = Number(config.cluster)
         node.attr = cap(config.attr)
         this.on('input', function(msg) {
-            _data = RED.util.evaluateNodeProperty(config.data, config.dataType, node, msg);
+            if (config.dataType == 'null'){
+                _data = null
+            } else {
+                _data = RED.util.evaluateNodeProperty(config.data, config.dataType, node, msg);
+            }
+
             node.controller.commissioningController.connectNode(node._id).then((conn) => {
                 const ep = conn.getDeviceById(Number(node._ep))
                 const clc = ep.getClusterClientById(Number(node.cluster))