Putting different images in a pdf, duplication error

General
,
1

Again I'm here with this PDF issue, I can put the images inside the PDF, but even though I put the directory of different images one always overlaps the other, I've tried several things and so far I haven't been able to solve this problem

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I believe that the crucial part is within the template node
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specifically on this line, but I don't know how to differentiate the payloads here in a way that accepts it, whenever I try node-red dies
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My flow down:

[{"id":"54ef025d.56fccc","type":"template","z":"2521f04f9179ef7d","name":"","field":"payload","fieldType":"msg","format":"json","syntax":"mustache","template":"{\n    \"pageSize\": \"A4\",\n    \"pageOrientation\": \"portrait\",\n    \"pageMargins\": [\n        40,\n        60,\n        40,\n        60\n    ],\n    \"info\": {\n        \"title\": \"awesome Document\",\n        \"author\": \"john doe\",\n        \"subject\": \"subject of document\",\n        \"keywords\": \"keywords for document\"\n    },\n    \"content\": [\n        {\n            \"text\": \"Logo São Paulo Skills\",\n            \"alignment\": \"center\",\n            \"margin\": [\n                0,\n                0,\n                0,\n                20\n            ]\n        },\n        {\n            \"image\": \"data:image/jpeg;base64,{{{payload}}}\",\n            \"width\": 200,\n            \"alignment\": \"center\",\n            \"margin\": [\n                0,\n                0,\n                0,\n                20\n            ] \n        },\n        {\n            \"image\": \"data:image/jpeg;base64,{{{payload}}}\",\n            \"width\": 201,\n            \"alignment\": \"center\"\n        }\n    ]\n}","output":"json","x":900,"y":300,"wires":[["bdd7feab.d9412"]]}]
2

The is a basic and fundamental node-red thing you need to get to grips with - messages will NEVER arrive from 2 wires into a node at the same time. i.e. your template will see 2 messages, each with a payload

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As established above, msg.payload is msg.payload. Unless you move/rename that property that is all it will ever be. So I recommend putting the file+base64 nodes in series (you have them in parallel currently) and use change nodes after the base64 nodes to move msg.payload into msg.image1 and msg.image2

inject → file → base64 → change node (move payload to image1) → file → base64 → change node (move payload to image2) → template

Add a debug node BEFORE the template to check you have msg.image1 and msg.image2 in a single msg entering the template, then you can use {{{image1}}} and {{{image2}}}

3

Thank you for the answer, I did what you recommended but the value appears as "undefined" in the debug, I tried it in parallel by joining with a join but it didn't work either

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I did this for both
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It seems that the payload is lost when converting the payload

The series way as you said didn't work either

4

Now I did it, I replaced the changes with two functions, and it worked, thank you very much for your help, another question, do you know how I could put a text object with the value of the current time at which the pdf was generated in the pdf??

5

No, you have missed the point I'm afraid.

Read this again...


This is in series...

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Also, please try to do as recommended:

EDIT

PS:
Your join version could work if you set it up correctly (i.e. added topics and joined to a key/value pair)

6

@Steve-Mcl

7

I'm not able to put the datetime value in the pdf yet, I even have an idea of ​​how to put the value of my input into the pdf, I just don't know what the code would look like inside the template, because when I try to put a var inside it I get an error , does not accept

8

Exactly the same as the images. Get a time string into the msg (the same msg that the images are in) in any property you wish to invent (e.g. msg.datetime) then use the curly brackets as before. "Generated: {{{datetime}}}"

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