Pic out timestamp from mqtt value template Weather Display. How to do?

Configuration
1

Hello!
I use latest HA
Home Assistant 2023.8.3 Supervisor 2023.08.1 Operating System 10.4 Frontend-version: 20230802.1 - latest

I make mqtt sensors to pic out values from my Weather Display software (on another computer)
It works good with temperatures value. But if i want values as time and date i got Unknown value.

My sensor:


- name: "WD Moonset"
      icon: mdi:theme-light-dark
      state_topic: "moonset"
      unit_of_measurement: ''
      value_template: '{{ value.split("{")[1].split("}")[0].strip() }}'

When i use MQTT explorer i got the value, but i dont know how i should pick it out in my value template.

Namnlös
Namnlös1920×1080 132 KB

Hope for help…

Johan

2

I think you need to escape the brackets in your template.

I’m not 100% sure if it will work but try this:

value_template: '{{ value.split("\{")[1].split("\}")[0].strip() }}'
3

Hello!
Thx for your answer.
Sorry, it will not work.
Here is the logg from HA:

Logger: homeassistant.helpers.template
Source: helpers/template.py:735
First occurred: 14:10:59 (7 occurrences)
Last logged: 14:12:51

Template variable error: list object has no element 1 when rendering '{{ value.split("\{")[1].split("\}")[0].strip() }}'
4

Remove this line:

      unit_of_measurement: ''

and use the template shown below:

    - name: "WD Moonset"
      icon: mdi:theme-light-dark
      state_topic: "moonset"
      value_template: '{{ value[3:8] }}'

The template assumes the time is always reported using 4 digits with a colon separator.

The template won’t work correctly if the time is shown using 3 digits (like 5:45 instead of 05:45).

5

Works like a charm!!!
THX!

But how i do with this value, or the another ones with dates and % ?

Namnlös1
Namnlös11920×1080 106 KB

6

The technique I used is described here:

It’s useful only if the value you want to extract always has the same length. If the length can vary (for example, a date can vary in length) then you must use a different technique. I suggest something like this:

    - name: "WD Next Full Moon"
      state_topic: "nextfullmoon"
      value_template: "{{ value.replace('WD{ ', '').replace('}', '') }}"

It simply replaces {WD and } with nothing. Therefore it will change this:

WD{ 31 augusti 2023}

to this:

31 augusti 2023
7

Like a king!!!

Thank you!!!

8

You’re welcome!

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