The Node-Red Message Object for Beginners

www.steves-internet-guide.com/node-red-message-object/- The msg object is passed between nodes in a flow.In this video tutorial we will examine the msg object and how we can change the message object properties. I also show you how to quickly copy a flow or parts of a flow.
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Have a question Use the comments or if you want help then use
www.steves-internet-guide.com/...
If you find these videos useful then you might want to consider buying me a coffee
www.paypal.me/StepenCope

[@kcmichaelm]

Thank you for making these. Some of the online instruction is harder to follow when it's just in a text form - seeing a walkthrough of it in real time makes things very clear.

[@dhruvpurwar6642]

Great video...got to learn something new. Thanks!!

[@uweri_3851]

perfect stuff. Watching your videos help me to get more and more familiar with rednode. Hope we get much more of these.

[@BernhardSix]

Thank you. Manipulating the msg within a function node was interesting to me

[@buddyscottie2184]

many thanks - clear and concise, very useful

[@kimia1377]

finally a proper tutorial thankyou very much

[@nurwardiahspian9833]

thank you..very helpful for a beginner like me

[@Critiquetech]

Very good explanation , thank you.

[@EViL3666]

Great video.. Thanks a lot for publishing these, very useful... I tinker with Python, so I'm looking to use Node-RED as a dashboard / controller for different bits around the house.

[@rogeriotalmeida]

very good .. thanks a lot

[@rjh8888]

Thank you.

[@onlyiwilknow]

Nice one Steve!
I was hoping you would continue from there and perhaps write the (or specific) values in a .txt or .csv file or even more interesting into a mySQL database )-:
(Ideally combine say the date and timestamp value with the home sensor value when you write the combined value in a file)

[@stevecope]

Hi
That's the next video on the list and hopefully in a few weeks as I'm trying to finish off another project

[@InshotsKannada]

#noderedtutorials for more videos nodered

[@SA-oj3bo]

Thanks! Is there any logic behind the msg id or is it just a random number?

[@stevecope]

The idea is that you can use it to track a message even if it branches.

[@anthonysmicro-world5073]

it is possible to split one string like this "18.3;82.0;3" for a 3 topics ?

[@stevecope]

You can split on the ; using
s="18.3;82.0;3";
res=s.split(",");
you should get an arryay
[18.3,82.0,3]

[@anthonysmicro-world5073]

@@stevecope thanks

[@gilquinones6652]

Hi Steve, this is great. I am a novice at this. What example videos do you have to extract(getData) data from a "Text" File using flows or objects?

[@stevecope]

Hi
Are you looking to extract words from text.? do you have a little example

[@gilquinones6652]

Yes I do. This is from a log file: I am looking to extract the connect-id: , sco-id: , and the asset-id:
3 rows retrieved, max rows: 10; local time: Tue Mar 03 18:59:09 UTC 2020
execution start: 2020-03-03 18:30:22.153 UTC
{"compile-ms":"9","exec-ms":"94","server-rec'd":"1583260222134","statusDetail":"","status":"DEFAULT","host":"python-85fb5dbf54-t8tbs","total-ms":"107"}
2020-03-03 18:30:22.153 INFO 451: starting: api replaySession, level: TRACE
2020-03-03 18:30:22.165 DEBUG starting execution
2020-03-03 18:30:22.165 DEBUG replaySession
2020-03-03 18:30:22.166 DEBUG connect-id : r6GJIPvyVflqXpJd
2020-03-03 18:30:22.166 DEBUG sco-id : 11692
2020-03-03 18:30:22.166 DEBUG asset-id : 58754
2020-03-03 18:30:22.235 TRACE PS: SELECT date_start, date_end, attendees_list, transcripts, sco_info, meeting_permissions_list, server FROM session_log WHERE connect_id = ? AND sco_id = ? AND asset_id = ? /* ec81aa30-5d7c-11ea-8ee0-53b4772b249d replaySession */
-> args: ('r6GJIPvyVflqXpJd', 11692, 58754)
-> consistency: ONE
2020-03-03 18:30:22.258 DEBUG Failed to find meeting [r6GJIPvyVflqXpJd / 11692 / 58754] in session log
2020-03-03 18:30:22.259 DEBUG 1 datalake keyspace queries
2020-03-03 18:30:22.259 DEBUG executed without exceptions
"meeting.log" 67L, 3976C

[@stevecope]

@@gilquinones6652 I'll take a look

[@stevecope]

@@gilquinones6652 Hi
I found a node that might be useful
flows.nodered.org/node/node-red-contrib-string
I will try it myself to see how it works
Contact me on the ask steve page on the site as it is easier to send you a flow.
www.steves-internet-guide.com/ask-steve/
rgds
steve

[@gilquinones6652]

Steve , I will take a look and let me know what you find. Thank you

[@misterwilliam8877]

Dear Steve, i have little problem converting message objects. I mailed regarding the issue. Kindly check