saving and temperature works

app/client/alarm.js

@@ -0,0 +1,50 @@
+function sensor_data_collection() {
+  var controllerId = Session.get('controller_id');
+  return SensorData.find({
+    controllerId: controllerId
+  }, {
+    sort: {
+      created_at: -1
+    },
+    limit: 3
+  });
+}
+
+function last_sensor_reading() {
+  var controller = Session.get('controller_id');
+  var result = null;
+  if (controller) {
+    result = sensor_data_collection();
+  }
+  if (result && result.count() > 0) {
+    return result.fetch()[0];
+  } else {
+    return {}
+  }
+}
+
+Template.alarm.helpers({
+  last_reading: last_sensor_reading,
+  pretty_time: function(time) {
+    return moment(time).format("DD.MM.YYYY, HH:mm")
+  },
+  all_temperatures: function() {
+    var result="";
+    var temperatures = last_sensor_reading().temperatures;
+
+    for(var i in temperatures) {
+      result += '' + parseFloat(temperatures[i]).toFixed(1) + ' °C ';
+    }
+    return result;
+  }
+});
+
+Template.alarm.events({
+  'click #run_alarm_settings': function() {
+    Modal.show('alarm_settings');
+  }
+});
+
+Template.alarm.helpers({
+
+});