Markdown Card For Loop

Configuration Frontend
1

I’m having a problem getting the length of a loop to show one time. I’m guessing it’s a syntax issue. Here’s my code:

{% for l in config.entities %}
  {% if ("state.l.entity", 'on') %} 
    Lights on: {{ loop.length }}
  {% endif %}
{% endfor %}

{% for l in config.entities if ("state.l.entity", 'on') %}
  {{ l.name }}
{%- endfor %}

38 PM

Why is the length repeating? Sorry, first time Python, and new to Home Assistant. I read the Jinja and Markdown Card docs and still can’t seem to figure it out. Thanks to anyone who can point me in the right direction.

2

Your lights on needs to be outside

3

Like this?


{% for l in config.entities %}
  {% if ("state.l.entity", 'on') %} 
  {% endif %}
  Lights on: {{ loop.length }}
{% endfor %}

Tried it, but it returns the same. Also tried outside the for loop, but that breaks it.

4

Well you would normally

Initialize a variable to 0
Enter the loop
Perform validation
if validation is true
Add 1 to the variable
End of validation
End of loop
Print results

5

Thanks for your help. I really appreciate it. Unfortunately still not able to get it.

{% set count = 0 %}
{% for l in config.entities %}
  {% if ("state.l.entity", 'on') %}
    {% set count = count + 1 %} 
  {% endif %} 
{% endfor %}

This results in 0 printed once, which makes sense because count is outside of the scope.

{% for l in config.entities %}
  {% set count = 0 %}
  {% if ("state.l.entity", 'on') %}
    {% set count = count + 1 %} 
  {% endif %} 
  {{ count }}
{% endfor %}

This results in 1 printed as many times as looped through.

6

No need for a loop to count lights that are on.
Take a look in this topic for multiple examples.

Lights that are on:

{{ states['light']  | selectattr('state','eq', 'on') | list | count }}
7

I figured there would be a better way. Saving that link, it’s super helpful. Thank you!