Y’all gave me a hand earlier with a string formatting issue with an attribute being longer that 255 characters. Your suggestion was:
spacex_next_text:
value_template: "{{ states.sensor.spacex.attributes['details'] | truncate(255) }}"
entity_id: sensor.spacex
Which works superbly for the first part of the string, thankyou.
So how do I format a second value_template for capturing the second half of this string? (which can occasionally reach 500 characters)
I don’t know what you are trying to achieve here, but what I would do is assign the number of characters in the truncated text to a variable and then get the rest of the characters from there to the end like this:
{% set string_length = states.sensor.spacex.attributes['details'] | truncate(255) | length - 3 %}
{{ states.sensor.spacex.attributes['details'][string_length: ] }}
I am substracting 3 from the string length because truncate(255) will add an ellipsis sign (…) to the end of the string if it was truncated.
This is what I would use with built in safety
spacex_next_text:
value_template: >
{% set details = state_attr('sensor.spacex', 'details') %}
{{ details[255:] if details | length > 255 else '' %}
entity_id: sensor.spacex
It grabs all characters after the 255th character, if the string is longer than 255.
And just to explain the code, mystring is a 10 character string.
{% set mystring = '0123456789' %}
If I want to grab the 7th character in my string, call out the 7th index. Which happens to be 6 because lists start at zero. 0 = 1st item, 1 = second item, … 6 = 7th item. So in our case, the 7th item is the number 6. Use brackets after your string to grab that item [index].
Now, i want to grab everything before the 7th item, but not the 7th item. Well using the : character tells the brackets to grab everthing. Depending on what side you place the : on is what you get.
EDIT: Truncate is only useful when you want the pretty … at the end of your truncated string. If you don’t care about that, just cut the string at the index you want.
Thank you sir!
how to set first 9 letters from source:
source: TVN TURBO HD - Mistrzowie wpadek
i need to set first 9 letters: TVN TURBO
value_template: "{{ is_state_attr('media_player.vu_uno_4k', '{{source[:9]}}', 'TVN TURBO' ) }}"
not working…
this one works but its channel name and program name
value_template: "{{ is_state_attr('media_player.vu_uno_4k', 'source', 'KINO POLSKA HD - Człowiek z marmuru' ) }}"value_template: "{{ state_attr('media_player.vu_uno_4k', 'source')[:9] == 'TVN TURBO' }}"
you are master 
this one works perfect:
but can i have a comeback to white leds on other any channels?
only on eleven green leds, and when change to any other channel (not eleven) i going back to white?
action:
entity_id: light.led_tv
data:
rgb_color: [255, 214, 170]
brightness: 175
service: light.turn_on
i trying to use template with if and elseif but its not easy…
works
scripts:
tv_normal:
alias: Led white TV1
sequence:
- service: light.turn_on
data:
entity_id: light.led_tv
rgb_color: [255, 214, 170]
brightness: 80
tv_sport:
alias: Led green TV1
sequence:
- service: light.turn_on
data:
entity_id: light.led_tv
rgb_color: [38, 80, 17]
brightness: 80
white\green
Thanks @petro I used this to create two sensors to split the state of a weather forecast into two sensors.
- platform: template
sensors:
weather_report_conditions:
entity_id: sensor.weather_report_conditions
friendly_name: "Weather Report Conditions"
value_template: >-
{{'. Conditions are'}}
{% set details = state_attr('sensor.devonport_extended_text_0', 'state') %}
{{ details[:230] if state | length < 230 else '' -}}
weather_report_conditions_2:
entity_id: sensor.weather_report_conditions_2
friendly_name: "Weather Report Conditions_2"
value_template: >-
{%- set details = state_attr('sensor.devonport_extended_text_0', 'state') %}
{{- details[230:] if state | length < 230 else '' }}
TTS: Full Text Weather Report, BOM Australia Integration, Extract Weather Warning Data & Other Text