Node red Set_datetime from payload

Third party integrations Node-RED
1

I am working on an alarm clock flow in node red and trying to set a home assistant input_datetime with the data from a payload.

I have the moment node that will give me the date and time in any format I want it but am struggling to work out how to do the call service to set_datetime.

I know you have to send “date:” and “time:” in the service data of the call service. My best guess at the moment is… I have two moment nodes set up to output “YYYY-MM-DD” and “HH:mm:ss” flowing into a join node which is making an array. It then flows into a call service node with these settings.

domain:   input_datetime
service:   set_datetime
entity_id: input_datetime.work_alarm_with_offset
data: 
{
    "date": "{{payload[0]}}",
    "time": "{{payload[1]}}"
}

but in the node red debug window I get…

Error call service, home assistant api error. Error Message: Invalid format

If I use the sevice dev tool in home assistant.

Service:   input_datetime.set_datetime

    {
        "entity_id": "input_datetime.work_alarm_with_offset",
        "date": "2018-02-01",
        "time": "21:22:23"
    }

it works??? any ideas node red gurus?

2

Something is overriding from input. Can you put a debug node before the service call to see what’s the msg content from previous node that is going into the service call.

3

Your right there was data in the payload from previous nodes.

So I put in a change node to remove that data. The change node had these rules…

delete msg.topic
delete msg.data

so now the complete msg looks like this…

19/02/2019, 22:40:59[node: 955eb29e.e6623](https://########.duckdns.org:1880/#)msg : Object
object
payload: array[2]
0: "2019-02-20"
1: "08:25:00"
_msgid: "974f75d1.697978"

but I still get the same error

Error call service, home assistant api error. Error Message: Invalid format

4

I made it work!

In the end I added a couple more rules to the change node I was using to remove the msg.topic and msg.data infomation.

I added two rules that

set msg.payload.date
msg.payload[0]

set msg.payload.time
msg.payload[1]

it just didn’t like getting the array data. not really sure why?

5

Don’t know either. I haven’t used mustache with array index before. You can paste the flow here to test it later.

6

Mustache Templates use dot notation.

{{payload.0}} and {{payload.1}} will get you what you’re looking for.