Send msg.payload value to another node

General
1

Hi!
I have this flow that sends data from the firestore to the split node, which separates each key, so I have this function that creates a string using the keys and sends it to another node of the firestore, so I can put this string in the "collection" field and receive the data for a specific place.

Flow:

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Split node:
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Function node:
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Set node:
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The strings apparently work, but when sending to the firestore node, it only returns the values ​​of the last place.

Can someone help me? being new to node-red, I don't know how sending data from one node to another works.

Thanks!

2

The first thing you need to do is to tell us which Firestore node you are using. Probably node-red-contrib-something. I don't use Firestore, but since no-one else has answered possibly no-one here does, but if you tell us which node it is I will have a look and see if I can help.

3

Guessing that you might be using node-red-contrib-cloud-firestore the first thing I notice when looking at the readme is

group : [boolean] fetch all documents under collections with the above supplied collection name (false by default)

which suggests that to get all documents in the collection you also need to set msg.firestore.group: true

4

Sorry, I'm using the node-red-contrib-cloud-firestore.

I left the option "group" as true, but it gives an error in node-red, it appears in the log:

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But, I made a new node with the name of the collection that I have in common ("user"), and all the document information really came to me, I would now need to separate this data.

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5

I managed using the switch node. But, in the case below, can I take all the objects that start with "User1" and generate a single json object? So there would be two outputs, one json with all "User1" objects and the other with all "User2" objects.

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I'm really sorry for the limited knowledge I still have on node-red.

6

Can I just help to get you off on the correct terminology here which may help to avoid confusion. A JSON object is always a string. It is a string representation of a javascript object. JavaScript Object Notation. So what you are trying to create here is a javascript object, not JSON.

In a Function node you can use Object.entries() to give you an array of key/value pairs. Object.entries() - JavaScript | MDN
Then you can go through them and check the keys (which will be "User1", "User1a" etc and build two arrays out of those.

7

What I really wanted to do was find the name of the key, and if that key starts with "User1", create a unique object with everyone, like {"User1a": {}, "User1b": {}, "User1c": {}}, I'm not sure if Object.entries () can help me with this.

Anyway, I am really grateful for the help @Colin, really.

8

In a function node put
msg.payload = msg.payload.entries()
return msg

and feed it into a debug node to see what it gives you. It should give you what you are asking for as an array, which you can split into two arrays for user 1 and 2 and then if you really need to put back into an object.

But surely firestore can do this for you if you ask it the right questions.

9

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