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Bulk upload with nodeJs
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August 8, 2019
9:37 am
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Forum Posts: 1
Member Since:
August 8, 2019
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Hi there
I need to do a bulk upload to Thingspeak of a CSV file.
Unfortunately, I can only find code examples that use Python.
But under no circumstances will I use Python.
On my Raspberry Pi, I primarily use nodejs. I have not been able to find code examples for this.
I know you need an httpXMLrequest (POST). But how?
Best regards Poul C

December 3, 2019
2:29 pm
New Member
Forum Posts: 2
Member Since:
May 2, 2019
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This works for me:

async function bulkUpdate(url, bulkJson) {
const response = await fetch(url, {
method: 'post',
body: JSON.stringify(bulkJson),
headers: {
'Content-Type': 'application/json'

This function can be called like this:

url = 'https://api.thingspeak.com/channels/' + channel + '/bulk_update.json';
bulkUpdate(url, bulkJson);

In the above, 'channel' is your ThingSpeak channel number. 'bulkJson' is the object that contains the bulk update information:

let bulkJson = {
write_api_key: ''...your write key goes here..."
updates: []

Each entry in the bulkJson.updates array is something like this:

created_at: timestamp,
field1: value

I hope this helps. I was struggling with this for a while until I included

headers: {
'Content-Type': 'application/json'

as described above.

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