Dynamic variable in HTTP Binding

Add-ons Bindings
,
7

You could dynamically change the channel configuration whenever the bus id changed, using a rule.

Example in JRuby:

# Item that contains the bus id = BusID
# Item that contains the bus location = BusLocation
rule "Update Bus Location URL" do
  changed BusID
  run do |event|
    next unless event.state?

    state_extension = "?busId=#{event.state}"
    # Prevent disabling/enabling the Thing when the config is already updated
    next if BusLocation.channel.configuration["stateExtension"] == state_extension

    BusLocation.channel.configuration["stateExtension"] = state_extension

    # refresh config
    BusID.thing.disable
    BusID.thing.enable
  end
end