Using a dashboard switch to enable/disable interval inject

[mark hubrich]

Hi. Is there a way to mimic enabling or disabling an interval inject by using a switch?

I'd like to be able to start/stop the inject from dashboard. 

Thanks!!

Mark

[Cor Bosman]

You could have the output of the switch go into a change node and set a global variable. Then after the inject, put a switch node to check the global var and only if it matches continue on.

[Dave C-J]

Or also set the topic - then feed a function that uses the topic to discriminate and act as a gate...

[{"id":"af07d51.5afe728","type":"ui_switch","z":"d629259e.613838","name":"","label":"switch","group":"415ff655.a1d8f8","order":0,"width":0,"height":0,"passthru":true,"topic":"gate","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":245.5,"y":1005,"wires":[["c8edc66a.057cb8"]]},{"id":"c8edc66a.057cb8","type":"function","z":"d629259e.613838","name":"control","func":"if (msg.topic === \"gate\") {\n    context.pass = (msg.payload === true) ? true : false;\n    return null;  // exit out early as it's just the control\n}\nif (context.pass) {\n    return msg; // if enabled pass msg\n}\nreturn null; // or drop it","outputs":1,"noerr":0,"x":433.5,"y":1025,"wires":[["bd6caa17.447778"]]},{"id":"5bb586be.00a6a8","type":"inject","z":"d629259e.613838","name":"","topic":"","payload":"","payloadType":"date","repeat":"1","crontab":"","once":false,"x":268,"y":1067,"wires":[["c8edc66a.057cb8"]]},{"id":"bd6caa17.447778","type":"debug","z":"d629259e.613838","name":"","active":true,"console":"false","complete":"payload","x":644,"y":1026,"wires":[]},{"id":"415ff655.a1d8f8","type":"ui_group","z":"","name":"Default","tab":"622a3108.4411e","disp":true,"width":"6"},{"id":"622a3108.4411e","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]

[mark hubrich]

Thanks Guys!!

On Mon, Feb 27, 2017 at 1:36 PM, Dave C-J <dce...@gmail.com> wrote:

Or also set the topic - then feed a function that uses the topic to discriminate and act as a gate...

[{"id":"af07d51.5afe728","type":"ui_switch","z":"d629259e.613838","name":"","label":"switch","group":"415ff655.a1d8f8","order":0,"width":0,"height":0,"passthru":true,"topic":"gate","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":245.5,"y":1005,"wires":[["c8edc66a.057cb8"]]},{"id":"c8edc66a.057cb8","type":"function","z":"d629259e.613838","name":"control","func":"if (msg.topic === \"gate\") {\n    context.pass = (msg.payload === true) ? true : false;\n    return null;  // exit out early as it's just the control\n}\nif (context.pass) {\n    return msg; // if enabled pass msg\n}\nreturn null; // or drop it","outputs":1,"noerr":0,"x":433.5,"y":1025,"wires":[["bd6caa17.447778"]]},{"id":"5bb586be.00a6a8","type":"inject","z":"d629259e.613838","name":"","topic":"","payload":"","payloadType":"date","repeat":"1","crontab":"","once":false,"x":268,"y":1067,"wires":[["c8edc66a.057cb8"]]},{"id":"bd6caa17.447778","type":"debug","z":"d629259e.613838","name":"","active":true,"console":"false","complete":"payload","x":644,"y":1026,"wires":[]},{"id":"415ff655.a1d8f8","type":"ui_group","z":"","name":"Default","tab":"622a3108.4411e","disp":true,"width":"6"},{"id":"622a3108.4411e","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]

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[mark hubrich]

Btw what do I Google to find the best resource for learning the language? I need to know the basics. I look up JavaScript and I got lost. I found the best way to learn was by examples. 

Where can I find a page that contains many examples of function?

Thanks

Mark

[Cor Bosman]

Check out flows.nodered.org, tons of flow examples.

Cor

[steve rickus]

Hey Mark, when you say you want many examples of functions, I'm guessing you mean how to use the built-in javascript language, not necessarily node-red examples. Is that correct?

Personally, I don't think a day goes by where I don't have to look up javascript syntax, and I've been working with js for the better part of 10 years! The language keeps evolving and picking up nice features, driven by things like nodejs and loads of third-party libraries. I always keep a tab open to the Mozilla pages, like the Javascript Guide (for a good overview), and the list of Array operators and functions and Working with Objects.

There are many sites that will discuss javascript from primarily the client side of the web, as its initial use was for adding interactivity and logic to the web browser. Most of that you can ignore for programming in node-red, unless you want to build your own UI pages from scratch, or to add html/graphics in ui_template nodes. But I don't see you needing much of that for your current projects...

--

Steve

[Colin Law]

On 28 February 2017 at 00:37, mark hubrich <meis...@gmail.com> wrote:
> Btw what do I Google to find the best resource for learning the language? I
> need to know the basics. I look up JavaScript and I got lost. I found the
> best way to learn was by examples.
>
> Where can I find a page that contains many examples of function?

I suggest starting with https://www.w3schools.com/js/. There is an
introductory section then a reference with all the functions having
good examples. If you know approximately what you want to do that is
an excellent place to look. For example if you want to do something
with an array then the section on arrays shows how to do all the basic
stuff.

Colin

[mark hubrich]

Great resources thanks. I have learned lots from w3schools. I have to pull my head out of arduinos I guess :D 

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