Insert a string into a change node string? I am addicted to function nodes, and trying to break the habit. So here is what has to be a bone-headed easy thing to do? Say I have a message that has payload of 'test' and I have a change node where the set value is 'This is a X' where I want to replac…

If you dont want the replace function in JSONATA you can just combine with JSONATA: [image]

Why not using functions? They are there for these specific cases. In addition, I am convinced that a function Is faster than a change node.

Just trying to learn a new way... really function nodes are quick and easy... but when all I need is something simple like this... to me it is more "visually" communicative to use a change node. Function nodes make it very easy to hide a lot of details.

You could do it in a change node using JSONATA? See example below: [{"id":"f592c255.9e6c1","type":"change","z":"2140a9d4.13a7fe","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"\"This is a \"& payload","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":932.33…

That is pretty much what I was asking. Did not realize it was just the raw message part name that worked. Over thinking it. How to do inset in the middle of the string? Just thought that would be useful as well? Say... "This ?? only a test." Where I want to replace the ??.

you can also use the Template node if you want to use the mustache syntax This is a {{payload}} ! Test flow [{"id":"11a633e325e9c038","type":"inject","z":"54efb553244c241f","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":""…

LOL... good suggestion... I just tried that literally as I think you were posting. So it can't be done via a change node? Just asking if there is some magic that would make it work?

[image] Nodi.Rubrum: So it can't be done via a change node? yes .. the way @rakgupta demonstrated, using an expression .. its just that jsonata uses & to concatenate the strings instead of + as in javascript.

[image] For sure you can use a change node, using JSONATA and $replace. [{"id":"167e7587c990423b","type":"change","z":"53d8621916dd6725","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"$replace('This is a X', 'X', payload)\t","tot":"jsonata"}],"action":"","property":"","from":"","to"…

Yeah... like a message part? Straight Javascript in NR you could do "This is a ${msg.payload} test!" for example? Nuts... use replace... I should have thought of that.

What is funny... is I think the template methods is the most readable. Not that a function node is not valid.

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Insert a string into a change node string?

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Nodi.Rubrum 28 June 2022 17:31 16

True, if I was doing 'production' different animal... but I see much of NR... as non-critical for my use cases and thus I can be flexible.

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Insert a string into a change node string?

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