Right now I determine how many lights I have in a group with
Group:Switch:OR(ON,OFF) group_house_switch_light
it it possible to display as a groupname something like
“[Grouepname] 3 switched on out of 4”
Thanks
You should be able to use
Group:Number:COUNT("ON") group_house_switch_light "[%d] of 4 lights on"
to get the number of items that is currently on. Note that you have to hard-code the total number of items, so if you add another light to the group you have to change that manually.
Not sure if I got it completely correct, but see here for more info.
Okay so it is not possible to count the total number of lights by function???
In fact, the dynamic part of the label is not that flexible.
Group:Switch:OR(ON,OFF) group_house_switch_light "Number of Lights on [%d]"
would suffice to get the correct answer, but the total number of members can’t be displayed this way.
You could build a rule like this:
rule "count members"
when
Member of gGroup changed
then
var Integer ctOff = gGroup.members.filter[m|m.state == OFF].size
var Integer ctOn = gGroup.members.filter[m|m.state == ON].size // maybe var Int instead of var Integer?
var Integer ctSum = gGroup.members.size
var lOn = ctOn.toString + " out of " + ctSum.toString + " are switched ON"
var lOff = ctOff.toString + " out of " + ctSum.toString + " are switched OFF"
end
Afaik there are commands to change the label through a rule, but I never used them, so I don’t know if this will work as ecpected. Of course you could use a String Item to store the label and to display it.
rule "count members"
when
member of group_house_switch_light changed
then
var Integer ctOff = group_house_switch_light.members.filter[m|m.state == OFF].size
var Integer ctOn = group_house_switch_light.members.filter[m|m.state == ON].size // maybe var Int instead of var Integer?
var Integer ctSum = group_house_switch_light.members.filter[m|true].size
var lOn = ctOn.toString + " out of " + ctSum.toString + " are switched ON"
var lOff = ctOff.toString + " out of " + ctSum.toString + " are switched OFF"
end
this my rule…
but the error says
no viable alternative at input 'member'
small typo: Member of...
by the way: you need OH2.3.0 for this to work
see: Features for Rules that work with Groups
Ooops, sorry…
Changed to upper case 
Udo: do you remember if 2.3.0 Stable has this included?
the post that I linked is from Feb/18 and OH2.3.0 Stable was released on May/18 so it should include this
As far as I remember Member of was introduced before 2.3.0 stable.
It is possible to use
when
Item gGroup received update
then
instead, but this will always trigger gGroup.members.size + 1 times each time one member is updated.
next error ist
2018-11-30 08:14:36.990 [INFO ] [el.core.internal.ModelRepositoryImpl] - Validation issues found in configuration model 'default.rul$
The value of the local variable lOn is not used
The value of the local variable lOff is not used
because it is not set to the group how do I do this???
it only displays me a number not the whole text right now
You will need to display that text that is built in the two variables.
This is not an error. Just info from the rule parsing engine that the variables are not used.
Create 2 new items:
String NumberOfLightsON
String NumberOfLightsOFF
Change your rule:
rule "count members"
when
Member of group_house_switch_light changed
then
var Integer ctOff = group_house_switch_light.members.filter[m|m.state == OFF].size
var Integer ctOn = group_house_switch_light.members.filter[m|m.state == ON].size // maybe var Int instead of var Integer?
var Integer ctSum = group_house_switch_light.members.filter[m|true].size
var lOn = ctOn.toString + " out of " + ctSum.toString + " are switched ON"
var lOff = ctOff.toString + " out of " + ctSum.toString + " are switched OFF"
NumberOfLightsON.postUpdate(lOn)
NumberOfLightsOFF.postUpdate(lOff)
end
Sitemap:
Text item=NumberOfLightsON
Text item=NumberOfLightsOFF
but how can i add this directly to a group??
What do you mean?
Why would you want to add that to a group?
These two items contain the String that you wanted displayed in your first question.
My group is now this
Group:Switch:OR(ON,OFF) group_house_switch_light "Lichtschalter [%d]" <lightbulb> (group_house)
But I want to see a text with the group like “3 Lichtschalter von 4 sind an” instead only the number of light switches
That’s exactly what the 2 items above do. Put them in a sitemap and have a look.
label is not updated and no error in the log
Which label?
Add some logInfo in the rule to see if it runs at all:
rule "count members"
when
Member of group_house_switch_light changed
then
var Integer ctOff = group_house_switch_light.members.filter[m|m.state == OFF].size
var Integer ctOn = group_house_switch_light.members.filter[m|m.state == ON].size // maybe var Int instead of var Integer?
var Integer ctSum = group_house_switch_light.members.filter[m|true].size
var lOn = ctOn.toString + " out of " + ctSum.toString + " are switched ON"
var lOff = ctOff.toString + " out of " + ctSum.toString + " are switched OFF"
logInfo("lOn", lOn)
logInfo("lOff", lOff)
NumberOfLightsON.postUpdate(lOn)
NumberOfLightsOFF.postUpdate(lOff)
end
in the log i see it but the label is stil displayed as “NumberOfLightsON” no text
Changed the two items:
String NumberOfLightsON "[%s]"
String NumberOfLightsOFF "[%s]"