How to get all entity_ids from a light group?

Configuration
1

I have this code that works perfectly for groups:

{%- for x in states.group.salon.attributes.entity_id -%}
{{ x }}{% if not loop.last %}, {%- endif -%}
{%- endfor -%}

But this doesn’t work for light groups, only for normal groups. How can I iterate over the entity_id of light groups?

2

Doesn’t appear that you can. The state object is identical to a normal light.

EDIT. There is a new expand method. It might work.

{{ expand('light.xx') }}
3

Thanks for your reply. Converting “salon” into a light-group and running this code:

{% for x in expand('light.salon') %}
{{x.entity_id}}
{% endfor %}

Just returns the entity_id of the light-group (light.salon in my case).

4

If you want a comma-delimited list of the group’s members, then you don’t need to iterate through expand’s result (i.e. don’t use a for-loop with expand).

Try this in the Template Editor:

{{ expand('group.salon') | map(attribute='entity_id') | join(', ') }}

It expands group.salon, selects all entity_id’s, then joins the results using a comma and space as a delimiter.

EDIT
My template is not applicable in this case because it’s designed for use with a standard group (not a light group).

1 Like
5

He’s trying this with a light group, which doesn’t have the entity_id attribute. It’s a shot in the dark if a light group works with expand and judging by his last post, I would say it doesn’t.

6

Oops! My mistake; I’ve never used light groups and made an incorrect assumption.

7

Well, the smaller code for filtering groups will come handy since it seems I’ll have to use groups anyway, so thanks for that @123 . Which brings me to another question, how can I add brightness and (for some groups) temperature controls to a group in the UI?

8

you’d have to get inventive with automations and input_numbers. Or use that light group. And there is a universal climate component too. But you still won’t be able to break out he entity_id’s from those devices because they emulate a physical device, which doesn’t have those attributes.

9

Thanks for this - I use standard groups for all my lights - the only advantage of light_group was the dialog to adjust them which I never use.

This has solved my problem perfectly.

10

Leaving this here because this is the main thread that comes up when searching:

{% set a = ((expand('light.light_group')
| map(attribute='attributes.entity_id')
| first) | join(' ')).split() %}
{{ expand(a) | selectattr('state','eq','on')
| map(attribute='entity_id') | list }}
1 Like
11

That’s alittle over complicated, all you need is:

{{ state_attr('light.light_group', 'entity_id') }}

and for lights that are on

{{ state_attr('light.light_group', 'entity_id') 
   | expand | selectattr('state', 'eq', 'on') | map(attribute='entity_id') | list }}
3 Likes