Cannot access filename when using node-red-contrib-ftp-server

General
1

Hi, I am trying to use the FTP server node but are facing a problem.
My flow is as below:

image
image849×378 67.7 KB

As can be seem the filename is topic of the message.
But whatever I do to extract the filename and remove the "/" results either on some error or undefined.
If I insert a function node before the debug node I can do:
var imgname = msg.topic;
It works as below:

image
image840×460 86.4 KB

But if I try to remove the "/" from the filename (using replace or substring) nothing happens, no error, no print but I have to restart node-red for the FTP node to work again.

What Am I doing wrong?
Thanks

2

You have not shown what you have tried, so don't know if this has been tried

msg.imgname = msg.topic.substr(1);
return msg;

[{"id":"15c42ff2.e05b68","type":"inject","z":"a3b92cc4.e3cb","name":"","props":[{"p":"topic","vt":"str"},{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"/23456 (1).jpg","payload":"[1,2,3,4,5,6,7]","payloadType":"bin","x":220,"y":100,"wires":[["1c362b66.bdde3d"]]},{"id":"1c362b66.bdde3d","type":"function","z":"a3b92cc4.e3cb","name":"","func":"msg.imgname = msg.topic.substr(1);\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":360,"y":120,"wires":[["fc7a6130.f3f4e","87e02340.b97f7"]]},{"id":"fc7a6130.f3f4e","type":"debug","z":"a3b92cc4.e3cb","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":510,"y":100,"wires":[]}]
3 
msg.newimgname = msg.imgname.substring(1);
return msg;

Testing your suggestion...

4

While your at it can we see the debug output of the ftp node?

5

The FTP node returns the image in payload and filename as topic.
It is working now with your sugestion.

I was first making imgname = msg.payload and then
msg.imgname.substring(1);
Somehow imgname was visible at the debug window but when addressed with msg.imgname it somehow, would return undefined.

But when I used msg.imgname = msg.topic.substr(1); as you sugested above it works OK.
Now I can debug msg.imgname and it returns the expected value.

Many thanks.

6

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.