# Multiple topics in one template

**URL:** <https://discourse.nodered.org/t/multiple-topics-in-one-template/39790>\
**Category:** General\
**Created:** [26 January 2021 15:49 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790 "2021-01-26T15:49:23Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Gehasi](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@Gehasi](https://discourse.nodered.org/u/Gehasi)\
**Post date:** [26 January 2021 15:49 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790/1 "2021-01-26T15:49:24Z")

</div>

Hi I have the following node and Im thinking of how can I make it more simple. Because no I have 17 templates and there should be a way to just make it simpler.. Its hard to explain maybe if you see my node you will understand what I mean...

```auto
[{"id":"fe5cbd20.7d67a8","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"afaacc1d.ab2918","type":"template","z":"fe5cbd20.7d67a8","name":"Office - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/Office/set/state","output":"str","x":1290,"y":240,"wires":[["cffd3bfc.e19ec"]]},{"id":"26015b8c.3b0d64","type":"json","z":"fe5cbd20.7d67a8","name":"","property":"payload","action":"","pretty":false,"x":350,"y":560,"wires":[["6f592e5.2d66ad"]]},{"id":"8206c876.72a7b","type":"mqtt in","z":"fe5cbd20.7d67a8","name":"Schalter1 Taste 6","topic":"zigbee2mqtt/Schalter1","qos":"2","datatype":"auto","broker":"5d017373.c59dac","x":160,"y":560,"wires":[["26015b8c.3b0d64"]]},{"id":"6f592e5.2d66ad","type":"switch","z":"fe5cbd20.7d67a8","name":"","property":"payload.action","propertyType":"msg","rules":[{"t":"eq","v":"button_6_single","vt":"str"},{"t":"eq","v":"button_6_double","vt":"str"},{"t":"eq","v":"button_6_triple","vt":"str"},{"t":"eq","v":"button_6_hold","vt":"str"},{"t":"eq","v":"button_6_release","vt":"str"}],"checkall":"true","repair":false,"outputs":5,"x":490,"y":560,"wires":[["c49d748b.ce0ff"],[],[],[],[]]},{"id":"c49d748b.ce0ff","type":"function","z":"fe5cbd20.7d67a8","name":"","func":"\n var newMsg = \"toggle\"\n msg.payload = newMsg;\n\n\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":820,"y":560,"wires":[["afaacc1d.ab2918","49cfc081.120028","5a2aa3c3.417864","6509746f.813eec","27ceba87.7b127e","8ac7c18b.8e6e48","9e9fd043.be181","d5d2a7ea.16cd8","b42f6075.c22f3","9d50264e.cabeb8","f1926037.a34498","39e18e88.303042","37b5294b.1e0d8e","85e9a81.1363158","36093f9c.7d412","b0de2c2b.c58b2","8c5ed665.2dd3a"]]},{"id":"49cfc081.120028","type":"template","z":"fe5cbd20.7d67a8","name":"FloorOffice - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/FloorOffice/set/state","output":"str","x":1310,"y":280,"wires":[["cffd3bfc.e19ec"]]},{"id":"5a2aa3c3.417864","type":"template","z":"fe5cbd20.7d67a8","name":"StepsOG - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/StepsOG/set/state","output":"str","x":1300,"y":320,"wires":[["cffd3bfc.e19ec"]]},{"id":"6509746f.813eec","type":"template","z":"fe5cbd20.7d67a8","name":"Floor2Play - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/Floor2Play/set/state","output":"str","x":1310,"y":360,"wires":[["cffd3bfc.e19ec"]]},{"id":"27ceba87.7b127e","type":"template","z":"fe5cbd20.7d67a8","name":"Floor2Bed - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/Floor2Bed/set/state","output":"str","x":1310,"y":400,"wires":[["cffd3bfc.e19ec"]]},{"id":"8ac7c18b.8e6e48","type":"template","z":"fe5cbd20.7d67a8","name":"KidsBed - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/KidsBed/set/state","output":"str","x":1300,"y":440,"wires":[["cffd3bfc.e19ec"]]},{"id":"9e9fd043.be181","type":"template","z":"fe5cbd20.7d67a8","name":"KidsBedBath - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/KidsBedBath/set/state","output":"str","x":1320,"y":480,"wires":[["cffd3bfc.e19ec"]]},{"id":"d5d2a7ea.16cd8","type":"template","z":"fe5cbd20.7d67a8","name":"KidsPlay - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/KidsPlay/set/state","output":"str","x":1300,"y":520,"wires":[["cffd3bfc.e19ec"]]},{"id":"b42f6075.c22f3","type":"template","z":"fe5cbd20.7d67a8","name":"KidsPlayBath - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/KidsPlayBath/set/state","output":"str","x":1320,"y":560,"wires":[["cffd3bfc.e19ec"]]},{"id":"9d50264e.cabeb8","type":"template","z":"fe5cbd20.7d67a8","name":"FloorEgUp - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/FloorEgUp/set/state","output":"str","x":1310,"y":600,"wires":[["cffd3bfc.e19ec"]]},{"id":"f1926037.a34498","type":"template","z":"fe5cbd20.7d67a8","name":"FloorEgDown - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/FloorEgDown/set/state","output":"str","x":1320,"y":640,"wires":[["cffd3bfc.e19ec"]]},{"id":"39e18e88.303042","type":"template","z":"fe5cbd20.7d67a8","name":"DiningTable - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/DiningTable/set/state","output":"str","x":1310,"y":680,"wires":[["cffd3bfc.e19ec"]]},{"id":"37b5294b.1e0d8e","type":"template","z":"fe5cbd20.7d67a8","name":"Livingroom - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/Livingroom/set/state","output":"str","x":1310,"y":720,"wires":[["cffd3bfc.e19ec"]]},{"id":"85e9a81.1363158","type":"template","z":"fe5cbd20.7d67a8","name":"FloorMaidsroom - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/FloorMaidsroom/set/state","output":"str","x":1330,"y":760,"wires":[["cffd3bfc.e19ec"]]},{"id":"36093f9c.7d412","type":"template","z":"fe5cbd20.7d67a8","name":"0xb0ce1814030e6413 - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/0xb0ce1814030e6413/set/state","output":"str","x":1340,"y":800,"wires":[["cffd3bfc.e19ec"]]},{"id":"b0de2c2b.c58b2","type":"template","z":"fe5cbd20.7d67a8","name":"0xb0ce1814030e6128 - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/0xb0ce1814030e6128/set/state","output":"str","x":1340,"y":840,"wires":[["cffd3bfc.e19ec"]]},{"id":"8c5ed665.2dd3a","type":"template","z":"fe5cbd20.7d67a8","name":"0xb0ce1814030e5c1a - state","field":"topic","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"zigbee2mqtt/0xb0ce1814030e5c1a/set/state","output":"str","x":1340,"y":880,"wires":[["cffd3bfc.e19ec"]]},{"id":"cffd3bfc.e19ec","type":"mqtt out","z":"fe5cbd20.7d67a8","name":"an MQTT senden","topic":"","qos":"","retain":"","broker":"5d017373.c59dac","x":1870,"y":520,"wires":[]},{"id":"5d017373.c59dac","type":"mqtt-broker","name":"MQTT","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"domoticz/bridge/state","birthQos":"0","birthRetain":"false","birthPayload":"online","closeTopic":"","closeQos":"0","closeRetain":"false","closePayload":"","willTopic":"","willQos":"0","willRetain":"false","willPayload":""}]

```

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [26 January 2021 16:06 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790/2 "2021-01-26T16:06:42Z")

</div>

Do you realise you are sending the msf from the `function` node to all seventeen `template` nodes each time? If that is the case, why not build a table in the `function` node and loop thru it creating the complete msg and sending one msg for each table. That way you would get rid of all the `template` nodes and to add a new device would just mean updating the table in the `function` node.

---

<div class="post-metadata">

**Author:** ![Gehasi](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@Gehasi](https://discourse.nodered.org/u/Gehasi)\
**Post date:** [26 January 2021 16:18 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790/3 "2021-01-26T16:18:02Z")

</div>

Sounds great and thats what I'm looking for but how to do it? Should I just create an array and loop it. Could your give me an example with 3 devices. That would help me a lot.

Many thanks in advance...

---

<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [26 January 2021 16:35 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790/4 "2021-01-26T16:35:21Z")

</div>

Here is an example

```auto
[{"id":"5825e73b.2df618","type":"mqtt in","z":"d7cd8d09.985378","name":"Schalter1 Taste 6","topic":"zigbee2mqtt/Schalter1","qos":"2","datatype":"json","broker":"a7d8322.c47985","x":580,"y":560,"wires":[["370ce238.ae7396"]]},{"id":"370ce238.ae7396","type":"function","z":"d7cd8d09.985378","name":"","func":"//set rooms / devices\nlet devices =[\"StepsOG\",\"FlorOffice\",\"Office\"];\n//set actions\nlet actions = {\"button_6_single\":\"toggle\",\"button_6_double\":\"another_action\"};\n // set payload to action\nmsg.payload = actions[msg.payload.action]\n// check msg.payload has been set\nif (!msg.payload){\n node.warn(\"ation not set\");\n return null;\n}\n// loop throgh rooms to create and send topics\ndevices.forEach((val) => {\n //set topic\n msg.topic = \"zigbee2mqtt/\"+val+\"/set/state\";\n // send message\n node.send(msg)\n});\nreturn null;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":820,"y":560,"wires":[["4fe2a13e.7d37a","d5558525.5a225"]]},{"id":"4fe2a13e.7d37a","type":"debug","z":"d7cd8d09.985378","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":940,"y":500,"wires":[]},{"id":"fe6779c8.7ca1d","type":"inject","z":"d7cd8d09.985378","name":"test","props":[{"p":"payload.action","v":"button_6_single","vt":"str"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","x":620,"y":500,"wires":[["370ce238.ae7396"]]},{"id":"d5558525.5a225","type":"mqtt out","z":"d7cd8d09.985378","name":"an MQTT senden","topic":"","qos":"","retain":"","broker":"a7d8322.c47985","x":1040,"y":560,"wires":[]},{"id":"a7d8322.c47985","type":"mqtt-broker","name":"MQTT","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"domoticz/bridge/state","birthQos":"0","birthRetain":"false","birthPayload":"online","closeTopic":"","closeQos":"0","closeRetain":"false","closePayload":"","willTopic":"","willQos":"0","willRetain":"false","willPayload":""}]

```

[edit] removed switch node as is not need this will work for each command just add actions and rooms in function node.  
Added check that msg.payload has been set

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [27 March 2021 16:35 UTC](https://discourse.nodered.org/t/multiple-topics-in-one-template/39790/5 "2021-03-27T16:35:49Z")

</div>

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