text: from flask import render_template_string
  from .. import db, mqtt
  from .basecontrol import BaseControl
  
  
  class Switch(BaseControl):
  
      btn1_label = db.StringField(max_length=40)
      btn1_topic = db.StringField(max_length=120)
      btn1_message = db.StringField(max_length=120)
      btn2_label = db.StringField(max_length=40)
      btn2_topic = db.StringField(max_length=120)
      btn2_message = db.StringField(max_length=120)
  
      def render_html(self):
          return render_template_string(
              '<div class="form-group">'
              '  <label class="control-label item-label col-xs-6">'
              '   {{control.label}}:'
              '  </label>'
              '  <div class="col-xs-6">'
              '    <button id="{{ control.id }}" type="button" class="btn btn-default mqtt-control" data-btn="1"> {{control.btn1_label}}</button>'
              '    <button id="{{ control.id }}" type="button" class="btn btn-default mqtt-control" data-btn="2"> {{control.btn2_label}}</button>'
              '  </div>'
              '</div>', control=self)
  
      def handle_event(self, data):
          if data['btn'] == '1':
              mqtt.publish(self.btn1_topic, self.btn1_message)
          elif data['btn'] == '2':
              mqtt.publish(self.btn2_topic, self.btn2_message)
  
      def get_subscribed_topics(self):
          return []
  