SWITCH node not playing the game

I am (again) not seeing the bigger picture.

I am playing with switch nodes and it doesn't seem to be behaving.

See nodes inside red boundary.

This is the code:

[{"id":"426ead5c.df267c","type":"switch","z":"a1911aa3.c45be8","name":"","property":"device","propertyType":"msg","rules":[{"t":"eq","v":"TABBYCAT","vt":"str"},{"t":"eq","v":"S5","vt":"str"},{"t":"else"}],"checkall":"true","repair":false,"outputs":3,"x":550,"y":1760,"wires":[["715936e0.e7d808","1fcc1e18.2ec63a"],[],[]]},{"id":"a3d05ad9.c7cb3","type":"debug","z":"a1911aa3.c45be8","name":"Power message","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":810,"y":1680,"wires":[]},{"id":"715936e0.e7d808","type":"fan","z":"a1911aa3.c45be8","name":"","x":690,"y":1730,"wires":[["a3d05ad9.c7cb3","9507ba32.ac3c38"]]},{"id":"e51e76d4.12bf08","type":"function","z":"a1911aa3.c45be8","name":"","func":"msg.device = msg.payload.device;\nmsg.payload = msg.payload.payload\n\nreturn msg;","outputs":1,"noerr":0,"x":410,"y":1760,"wires":[["426ead5c.df267c","edba70d2.09daa","c1e957f9.54b4a"]]},{"id":"edba70d2.09daa","type":"change","z":"a1911aa3.c45be8","name":"Set device","rules":[{"t":"set","p":"device","pt":"flow","to":"device","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":820,"y":1640,"wires":[[]]},{"id":"9507ba32.ac3c38","type":"function","z":"a1911aa3.c45be8","name":"Set LED","func":"var device = flow.get(\"device\")\nif (device == \"TABBYCAT\")\n{\n    //\n    msg.led = 2;\n} else\nif (device == \"S5\")\n{\n    //\n    msg.led = 3;\n} else\nif (device == \"Marvin\")\n{\n    //\n    msg.led = 4;\n}\nreturn msg;","outputs":1,"noerr":0,"x":840,"y":1730,"wires":[["f6034dc3.774ac"]]},{"id":"1fcc1e18.2ec63a","type":"trigger","z":"a1911aa3.c45be8","op1":"1","op2":"0","op1type":"str","op2type":"str","duration":"5","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":720,"y":1810,"wires":[[]]},{"id":"c1e957f9.54b4a","type":"debug","z":"a1911aa3.c45be8","name":"LOOK AT ME","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":490,"y":1820,"wires":[]}]

The problem is:
I send messages to it and it seems to not be happy with the second one.

I send in a message (LOOK AT ME) it goes through the SWITCH node and you see the (POWER MESSAGE).
The trigger node is to show the message has been sent to that output.

Ok, I'll expand the message:

Screenshot from 2020-08-20 09-41-14

Now let's look at the switch node:

So, if msg.device == "TABBYCAT" it sends it to output 1.

Now, I send a second message:

Yet this time it doesn't send the message to output 1.

Dumb question: Why?

I know the shot was taken after the 5 second trigger node had expired.
But you can see there are no subsequent messages like before.

I don't really like asking, but I have picked it apart as best I can resolve and I am not getting why it isn't working.

In you last screenshot there is an extra space in msg.device: " TABBYCAT" how was that produced ?
the switch node == comparison expects to compare exactly equal with "TABBYCAT" without extra space

1 Like

(Isn't it always the case?)

Yeah, I just noticed the leading space.


Thanks very much.

The Problem is the device sending the message is a phone and when typing the details I must have pressed the space bar by mistake while entering the name.

If you instead use contains in the switch node it will be more forgiving to your typing on the phone :wink:


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