ui_text doesn't works if there is no msg.payload

[stephjj]

On a ui_text node, if the incoming message don't have a msg.payload property, there is an error:
TypeError: Cannot read property 'toString' of undefined
And the value is not updated.

My workaround is to copy the message property (ex. msg.humidity) to msg.payload. Event if the node doesn't use payload but msg.humidity in the Value format configuration property.

• Node-RED-Dashboard version: 2.12.2
• Node-RED version: 0.19.5
• On blueMix

BTW, it could be useful that if the incoming message don't have the configured Value format, the display should not be erased.

[dceejay]

when you say it doesn't have the property... is it actually not there ? or defined but blank ?

This simple test works for me...

[{"id":"2fe6cbc5.023d24","type":"ui_text","z":"68704546.3d0e0c","group":"8c6774a4.06e158","order":5,"width":0,"height":0,"name":"","label":"text","format":"{{msg.payload}}","layout":"row-spread","x":470,"y":40,"wires":[]},{"id":"edc9571c.ec2bf8","type":"inject","z":"68704546.3d0e0c","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"hide":false,"x":120,"y":40,"wires":[["2fe6cbc5.023d24"]]},{"id":"30a49bb6.f57d04","type":"inject","z":"68704546.3d0e0c","name":"","topic":"","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"hide":false,"x":110,"y":80,"wires":[["3f857d5a.d30512"]]},{"id":"3f857d5a.d30512","type":"change","z":"68704546.3d0e0c","name":"","rules":[{"t":"delete","p":"payload","pt":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":290,"y":80,"wires":[["2fe6cbc5.023d24"]]},{"id":"ebc97482.ea2078","type":"inject","z":"68704546.3d0e0c","name":"","topic":"","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"hide":false,"x":110,"y":120,"wires":[["e458ae1d.ac8b8"]]},{"id":"e458ae1d.ac8b8","type":"change","z":"68704546.3d0e0c","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":280,"y":120,"wires":[["2fe6cbc5.023d24"]]},{"id":"8c6774a4.06e158","type":"ui_group","z":"","name":"Default","tab":"3df105b2.37ac4a","disp":true,"width":"6","collapse":false},{"id":"3df105b2.37ac4a","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]

(yes it does produce the error - so will be fixed)

[stephjj]

Not there.
And ui_text configured to use another property
[{"id":"4ebacd29.a16c4c","type":"ui_text","z":"852c7287.f6dab8","group":"2577c5bf.2b8f0a","order":0,"width":0,"height":0,"name":"","label":"payload","format":"{{msg.payload}}","layout":"row-spread","x":920,"y":100,"wires":[]},{"id":"552408d3.d0733","type":"inject","z":"852c7287.f6dab8","name":"","topic":"payload","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":100,"wires":[["4ebacd29.a16c4c"]]},{"id":"8869df5.a10cda","type":"ui_text","z":"852c7287.f6dab8","group":"2577c5bf.2b8f0a","order":1,"width":0,"height":0,"name":"","label":"humidity","format":"{{msg.humidity}}","layout":"row-spread","x":920,"y":160,"wires":[]},{"id":"5d14fc87.ac1544","type":"inject","z":"852c7287.f6dab8","name":"","topic":"humidity","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":160,"wires":[["c2836428.8c411"]]},{"id":"c2836428.8c411","type":"change","z":"852c7287.f6dab8","name":"","rules":[{"t":"set","p":"humidity","pt":"msg","to":"payload","tot":"msg"},{"t":"delete","p":"payload","pt":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":600,"y":160,"wires":[["8869df5.a10cda"]]},{"id":"d2ff7f27.08ed6","type":"ui_text","z":"852c7287.f6dab8","group":"2577c5bf.2b8f0a","order":1,"width":0,"height":0,"name":"","label":"humidity+payload","format":"{{msg.humidity}}","layout":"row-spread","x":950,"y":240,"wires":[]},{"id":"a5215508.0db65","type":"inject","z":"852c7287.f6dab8","name":"","topic":"humidity","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":240,"wires":[["4424200f.765bd8"]]},{"id":"4424200f.765bd8","type":"change","z":"852c7287.f6dab8","name":"","rules":[{"t":"set","p":"humidity","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":610,"y":240,"wires":[["d2ff7f27.08ed6"]]},{"id":"2577c5bf.2b8f0a","type":"ui_group","z":"","name":"Default","tab":"c7595ff7.e99d","disp":true,"width":"6","collapse":false},{"id":"c7595ff7.e99d","type":"ui_tab","z":"","name":"Main","icon":"dashboard"}]

I use Firefox, but I can check with a other browser