Lua: Trigger a virtual text sensor

[Fanfan]

Hi everybody,

I have a virtual text sensor (Home_Context ) that displays the status of the house ( Vacant or Present ), and try to trigger a script on his change of value.
With an API call, the trigger works, but with a change initiate in a lua script with the command " commandArray['UpdateDevice'] = 'idx|0|Present''" it is not working.
As a virtual text sensor has no state, just a value, my script looks like that:

Code: Select all

if (devicechanged[Home_Context]) then

	if (otherdevices_svalues[Home_Context] == 'Present') then
	
	elseif (otherdevices_svalues[v_Trigger] == 'Vacant') then
		
	end

end

Sure I can use the API command, but it's just to know if it is possible with commandArray command.

Thank you in advance

[mrf68]

Hi Fanfan,

So you are not looking for a solution like this?

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commandArray['OpenURL'] = "http://127.0.0.1:8080/json.htm?type=command&param=udevice&idx=IDX&nvalue=0&svalue=TEXT"

[jannl]

Looks lik ethe commandarray line is wrong

[bizziebis]

Is Home_Context a variable in your script which refers to a actual sensor?

Otherwise it should be devicechanged['Home_Context']

[Fanfan]

Hi

Thanks, for your feedback.

@mrf68: This is the last solution tested and she works fine. Thank

@jan_nl: My commandarray type " commandArray['UpdateDevice'] = 'idx|0|Present''" for changing the value of the virtual text sensor is good, when a script who use this command is running, the value change. But no event is triggered.

@bizziebis: Yes in my exemple code, Home_Context is a local variable.

My question was more to understand the behavior of virtual text sensor trigger.

[jannl]

you could add some print statements and check the contents of the virtual sensor and check if the conditions of the if-statement is met.

[Scones]

I've just tested this and it is still the case.
If I update my text virtual sensor using JSON it triggers a LUA event.
If I update my text virtual sensor using LUA it doesn't trigger a LUA event.

Is there any chance of fixing this?

[Scones]

This still appears to not work. Is there something I can do about this?

I have the following LUA

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-- Notification data push string
-- print('notification data push string') 

function urlencode(str)
   if (str) then
      str = string.gsub (str, "\n", "\r\n")
      str = string.gsub (str, "([^%w ])",
         function (c) return string.format ("%%%02X", string.byte(c)) end)
      str = string.gsub (str, " ", "+")
   end
   return str    
end

commandArray = {}
if (devicechanged['Notification_String']) then
  print("Notification String changed to - " .. devicechanged['Notification_String'])
  commandArray['OpenURL'] = "http://{myURL}?value="..urlencode(devicechanged['Notification_String'])
end
return commandArray

If I update the virtual sensor using

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curl -s -i -H Accept: application/json 'http://127.0.0.1:8080/json.htm?type=command&param=udevice&idx=413&nvalue=0&svalue=This+is+test+8'

the LUA gets triggered and all is great. However if I updating it using

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commandArray[#commandArray+1]={['UpdateDevice'] = '413|0|This is test 9' }

The text sensor still gets updated, but the devicechanged LUA doesn't get triggered.

The whole point of this is to just be able to update the text sensor and automatically get it pushed to the notification server. I don't want to have to do the openURL / urlencode every time.