I notice that people are using this.msg instead of mounted() { // listen for incoming msg's from Node-RED // note our topic is "msg-input" + the node's unique ID this.$socket.on('msg-input:' + this.id, (msg) => { }), for tracking msg input …

Yep, for clarification, as Colin has mentioned, this.msg can changed on 2 events: widget-load: When the Dashboard/page first renders msg-input: When an input arrives via Node-RED to the ui-template node If you run a watch on msg, then that will fire in both of those instances. If you add your own…

Currently revealed difference is about reply message. The socet listening strategy helps to avoid it if needed. Overall the watch strategy offer cleaner and simpler codding. That's of course is opinion which doesn't qualify to be discussed.

[image] Buckskin: this.$socket.on('msg-input:' + this.id, I can't think of a reason for doing it, but does that mean one can listen for messages intended for other nodes, with a different id?

[image] hotNipi: Currently revealed difference is about reply message Sorry for being a bit slow, but would you explain this, I haven't seen anything about reply message apart from here and one of Colin's posts.

[image] Buckskin: reply message Actually it is Replay Message.

Sorry typo. But what IS replay message. I have haven't seen anything about this in the documentation. The only msg mentioned is this.msg which is the last msg received by the ui-template node

[image] Buckskin: The only msg mentioned is this.msg which is the last msg received by the ui-template node If you refresh the page (or open another browser window on it) then node red replays the last message sent to the template. That allows the node to set its current state, assuming that…

Well you learn something new every day!!

Node-RED

Node-RED Forum

Use of this.msg V this.$socket.on('msg-input:' + this.id, (msg)

Dashboard

Colin 29 February 2024 21:34 6

Yes, that is it: Retaining state information in a Dashboard 2 ui-template - #13 by hotNipi

Topic		Replies	Views
Message sent once but received twice Dashboard	13	422	26 December 2023
Refresh ui-node Dashboard	40	11164	31 March 2022
MsgObject in UINode Dashboard	2	297	17 September 2020
Msg replayed in UI node after a tab switch Developing Nodes	14	1067	18 July 2020
Retaining state information in a Dashboard 2 ui-template Dashboard dashboard-2	29	653	1 April 2024

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Use of this.msg V this.$socket.on('msg-input:' + this.id, (msg)

Related topics