Failed to detect string in nr-if statement

[chuckf201]

I'm send in an opened or closed string in msg.payload and opening a jpg based on that value in a template node.

<div>
    <img ng-if="msg.payload === 'opened' " src="http://xx.yy.zzz.124:1882/GaragePicForSecurity-Open.jpg"  style="width:40%"> 
    <img ng-if="msg.payload === 'closed' " src="http://xx.yy.zzz.124:1882/GaragePicForSecurity-Close.jpg" style="width:40%"> 
</div>

This code produced the pic I need:

My debug output is:
{"_msgid":"be89d563.7e3a58","topic":"","payload":"opened\n","rc":{"code":0}}

There are no errors and So what am I missing here?

[JGKK]

i think you have to use {{msg.payload}} instead of just msg.payload, at least that is what you have to do elsewhere to access the msg object in the ui template node.
Johannes

[JGKK]

actually you don’t. The problem is you were missing the single quotation marks around the string you test.

<div>
    <h1 ng-if="msg.payload == 'open'">
        Open
    </h1>
    <h1 ng-if="msg.payload == 'closed'">
        Closed
    </h1>
</div>

I tested it this way and it worked

[chuckf201]

Still no fix. Looking closer at the debug I noticed a \n in the string.
It might not work with the check. I didn't add the newline, how do I remove it.

[chuckf201]

Single quote around string is there.

You also have a double equal. Does that matter?

[JGKK]

msg.payload = msg.payload.replace(/\\n/g,““);

or a change node

[{"id":"a816f868.5a2c9","type":"ui_template","z":"f954564f.03e718","group":"d619b4d0.780aa8","name":"","order":3,"width":0,"height":0,"format":"<div>\n    <h1 ng-if=\"msg.payload == 'open'\">\n        Open\n    </h1>\n</div>","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":520,"y":960,"wires":[["1a9dbc76.5e7a54"]]},{"id":"a720a089.bba69","type":"inject","z":"f954564f.03e718","name":"","topic":"","payload":"open\\n","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":960,"wires":[["7e9fb79b.64198"]]},{"id":"1a9dbc76.5e7a54","type":"debug","z":"f954564f.03e718","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":670,"y":960,"wires":[]},{"id":"7e9fb79b.64198","type":"change","z":"f954564f.03e718","name":"","rules":[{"t":"change","p":"payload","pt":"msg","from":"\\n","fromt":"str","to":"","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":320,"y":960,"wires":[["a816f868.5a2c9"]]},{"id":"d619b4d0.780aa8","type":"ui_group","z":"","name":"Countdown","tab":"b2566dcf.0415","order":2,"disp":true,"width":"6","collapse":false},{"id":"b2566dcf.0415","type":"ui_tab","z":"","name":"Countdown","icon":"dashboard","order":2,"disabled":false,"hidden":false}]

[hotNipi]

@chuckf201

You also have a double equal. Does that matter?

JavaScript — Double Equals vs. Triple Equals

[chuckf201]

Sure, I can see where 'loose equality' would be more lax but, in the strictest sense, both objects should be equal in value and type. Yes?

[chuckf201]

Your example worked great...thanks.
On to bigger and better way to learn and get into trouble.

[chuckf201]

I'm still not out of the woods yet.
This fails to bring up my jpg.

    <h1 ng-if="msg.payload == 'opened'  ">
        <img src="http://x.y.z.124:1882/GaragePicForSecurity-Open.jpg" alt="My-Open Attempt-FAILED" style="width:40%">
        Open
    </h1>
    <h1 ng-if="msg.payload == 'closed' ">
        <img src="http://x.y.z.124:1882/GaragePicForSecurity-Close.jpg" alt="My-Close-Attempt-FAILED" style="width:40%">
        Closed
    </h1>
</div>

any thoughts?
This stand-alone stmt works:
<img src="http://x.y.z.124:1882/GaragePicForSecurity-Open.jpg" alt="My-Attempt-FAILED" style="width:100%">

[chuckf201]

I realize that the logic and code is correct. Up-street, I'm using python3 to send opened and closed using a function node. Python uses a print statement with stdout and always has a \r\n. I can't remove it so I'll need another approach.

[JGKK]

But if it is always the same at the end of the string you receive why don’t you use one of the methods i was showing you to remove it from the string. Another way would be to use mqtt to send things from the python script to nodered.

Johannes

Edit: how do you run the python script? Because I have a few python scripts that I run with the exec or daemon node for long running scripts that communicate with nodered over stdout where I don’t have this problem when receiving the payload.

[chuckf201]

Changed string return(print) in python script to integer 0 or 1.
I'm using exec node to a file on RasPi.
So, to test, I changed the python print stmt to print print(int(1)) and connect it to a
function node

msg.payload = Number(msg.payload);
   return msg;

debug shows a single character 1 or 0.
Got rid of the cr nl but ng-if stmt fails.

No diff.

[JGKK]

Have a close look at what comparison you do with what object type. Have a look at this and how different comparisons work with different payload types:

[{"id":"bb4f191a.e43b68","type":"inject","z":"f954564f.03e718","name":"String 1","topic":"","payload":"1","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":190,"y":600,"wires":[["5606e10b.a83b8","9bdb6260.30e078"]]},{"id":"a2264de3.870e8","type":"inject","z":"f954564f.03e718","name":"String 0","topic":"","payload":"0","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":190,"y":660,"wires":[["5606e10b.a83b8","9bdb6260.30e078"]]},{"id":"5606e10b.a83b8","type":"ui_template","z":"f954564f.03e718","group":"5b810075.4590d","name":"","order":2,"width":0,"height":0,"format":"<div>\n    <p ng-if=\"msg.payload === '1'\">\n        String 1\n    </p>\n    <p ng-if=\"msg.payload === '0'\">\n        String 0\n    </p>\n    <p ng-if=\"msg.payload === 1\">\n        Number 1\n    </p>\n    <p ng-if=\"msg.payload === 0\">\n        Number 0\n    </p>\n    <p ng-if=\"msg.payload == 1\">\n        Doesnt matter 1\n    </p>\n    <p ng-if=\"msg.payload == 0\">\n        Doesnt matter 0\n    </p>\n</div>","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":380,"y":660,"wires":[[]]},{"id":"2ca0a9b3.9056e6","type":"inject","z":"f954564f.03e718","name":"Number 1","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":200,"y":720,"wires":[["5606e10b.a83b8","9bdb6260.30e078"]]},{"id":"907cc9aa.cfc438","type":"inject","z":"f954564f.03e718","name":"Number 0","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":200,"y":780,"wires":[["5606e10b.a83b8","9bdb6260.30e078"]]},{"id":"9bdb6260.30e078","type":"debug","z":"f954564f.03e718","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":390,"y":720,"wires":[]},{"id":"5b810075.4590d","type":"ui_group","z":"","name":"Items","tab":"b83efc1a.370b88","order":1,"disp":true,"width":"6","collapse":false},{"id":"b83efc1a.370b88","type":"ui_tab","z":"","name":"Scheduler","icon":"call_split","order":2,"disabled":false,"hidden":false}]

<div>
    <p ng-if="msg.payload === '1'">
        String 1
    </p>
    <p ng-if="msg.payload === '0'">
        String 0
    </p>
    <p ng-if="msg.payload === 1">
        Number 1
    </p>
    <p ng-if="msg.payload === 0">
        Number 0
    </p>
    <p ng-if="msg.payload == 1">
        Doesnt matter 1
    </p>
    <p ng-if="msg.payload == 0">
        Doesnt matter 0
    </p>
</div>

Johannes

[chuckf201]

The only difference between your code and mine is nothing except the python that's feeding it.
tried number and string my template doesn't check the payload.
I hooked up my python mode and my msg.payload drops through the ng-if statements.
I can send my short python script and my/your tab. What are you thoughts. This isn't rocket science yet we're doing the same thing...I think.
Appreciate your help.

[JGKK]

yes please the more info the better.

[JGKK]

After further thinking are you sure you only get 1or 0 because when I use a print statement from a python script with the exec node I do get the payload with a carriage return at the end. Try using:

msg.payload = msg.payload.replace(/[\n\r]+/g, "");
return msg;

[chuckf201]

That's it. works like it supposed to.
Thanks a ton.