Tasmota/tasmota/berry/examples/web_button_demo.be

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#-----------------------------------------------------------------------
- Demo of custom web button
-
- Creates a button on the main page that increments a counter each
- time the button is pressed, and display the Counter value like
- a sensor (not included in teleperiod, or implement also 'json_append()')
-
- Copy the following in `autoexec.be` in Tasmota file system
-----------------------------------------------------------------------#
import webserver
class Button_counter_demo : Driver
var counter
def init()
self.counter = 0 #- initialize the counter -#
end
#- this method receives events from buttons and displays values on main page -#
def web_sensor()
#- is 'incr_counter' included in the request -#
if webserver.has_arg("incr_counter")
var incr_counter = int(webserver.arg("incr_counter"))
self.counter += incr_counter
end
#- display the counter in its own line -#
webserver.content_send(format("{s}Counter{m}%i{e}", self.counter))
end
#- display button for Increase Counter and trigger 'incr_counter=1' when pressed -#
def web_add_main_button()
webserver.content_send("<p></p><button onclick='la(\"&incr_counter=1\");'>Increment Counter</button>")
end
end
#- create and register driver in Tasmota -#
counter_demo_instance = Button_counter_demo()
tasmota.add_driver(counter_demo_instance)