Return label of device that trigger evt

General Discussion
1

Essentially, tell me which one of the two presence sensors left.

I’ve been looking at the Greeting Earthlings app which allows for the selection of multiple presenceSensors.

When I run the code below in Sim it still outputs the name of both cars instead of the one that triggered the event.

preferences {
	
	section("Available Sensors") {
		input "auto", "capability.presenceSensor", title: "Select sensor to configure...", multiple: true
	}

	section("Available iPhones") {
		input "phone", "capability.presenceSensor", title: "Select phone to ping...", multiple: true
	}

}

def installed() {
	log.debug "Cars = ${auto.collect{it.label + ': ' + it.currentPresence}}"
	subscribe(auto, "presence", pingHandler)
}

def update() {
	log.debug "Cars = ${auto.collect{it.label + ': ' + it.currentPresence}}"
	unsubscribe()
	subscribe(auto, "presence", pingHandler)
}

def pingHandler(evt) {

	def car = getCar(evt)
	
	if(evt.value == "present") {
		def phoneState = phone.currentState("presenceSensor")
		sendPush("${auto.displayName} is here, I will update iPhone locations.")
	} else if (evt.value == "not present") {
		def phoneState = phone.currentState("presenceSensor")
		sendPush("${auto.displayName} has left, I will update iPhone locations.")
	}
}

private getCar(evt) {
	auto.find{evt.deviceId == it.id}
}
2

You can use ${evt.displayName} instead of ${auto.displayName}.

See https://graph.api.smartthings.com/ide/doc/event

displayName of an event is “User-oriented name of the source of this event. Typically the user-assigned device label”

3

Thanks @stepchen,

I appreciate the link. I kept getting a HANDLER error in console. I refreshed and it worked.