Adding travel time to current time

Configuration
1

Hey everyone,

I’ve got an automation where I’m trying to take the travel time to home from a named zone and create an ETA in a notification. Is there a way to add the minutes for travel to the current time?

alias: Erin Left Swim Lessons
description: ""
trigger:
  - platform: zone
    entity_id: person.erin
    zone: zone.oak_city_swim
    event: leave
condition: []
action:
  - service: notify.mobile_app_pixel_5
    data:
      message: Erin Left the Swim Lessons, ETA - {{ ((now().strftime('%I:%M')) + ((state_attr('sensor.erin_travel_time_to_home','duration'))|int|timestamp_custom('%',false)) )  }}
mode: single

This sends a notification but the time is the current time not the ETA.
I was just sending the travel time but I wouldn’t always see the notification right away and then I’d have to do math in my head to figure out when time was to expect them.
What am I doing wrong here?
I’m getting travel time from Waze in minutes (9.45346 minutes).

2

I’m surprised you are seeing anything as your template is not quoted.

What format is the duration attribute in?

If it is a time datetime object you can do this:

message: Erin Left the Swim Lessons, ETA - "{{ ( now() + state_attr('sensor.erin_travel_time_to_home','duration') ).strftime('%-I:%M') }}"

If it is not a datetime object:

message: Erin Left the Swim Lessons, ETA - "{{ ( now() + state_attr('sensor.erin_travel_time_to_home','duration')|as_timedelta ).strftime('%-I:%M') }}"
3

hey @tom_l , thanks for the response and your help. The template was just putting quotes in my message when I quoted it so I took them out and it still worked. I was puzzled by that as well.
The format seems to be a fixed decimal

Screenshot 2023-01-31 090622
Screenshot 2023-01-31 090622543×700 31.9 KB

so I would guess that I’m not dealing with a datetime object but when I use the suggest code you provided it throws this error:

Error rendering data template: TypeError: expected string or bytes-like object

Running it with the datetime code gives me this error:

Error rendering data template: TypeError: unsupported operand type(s) for +: ‘datetime.datetime’ and ‘float’

I feel like I just need to be able to take the duration and convert it to a datetime object then add it to the current time but I’m stuck on how to do that.

4

Try this

message: Erin Left the Swim Lessons, ETA - "{{ ( now() + timedelta( minutes = state_attr('sensor.erin_travel_time_to_home','duration') ).strftime('%-I:%M') }}"
5

@tom_l that got it! Thanks for you help on this. I added on close parentheses to what you provided, here is the final code:

alias: Erin Left Swim Lessons
trigger:
  - platform: zone
    entity_id: person.erin
    zone: zone.oak_city_swim
    event: leave
condition: []
action:
  - service: notify.mobile_app_pixel_5
    data:
      message: Erin Left the Swim Lessons, ETA - "{{ ( now() + timedelta( minutes = state_attr('sensor.erin_travel_time_to_home','duration') )).strftime('%-I:%M') }}"
mode: single
2 Likes
6

How would I do this but with 24 hour time format as the message? The template you shared (thank you btw) does it as 12 hour time format