controller id is now sent with sensor data

app/client/log.js

@@ -1,6 +1,7 @@
 Template.log.helpers({
   sensorDataCollection: function() {
-    return SensorData.find({}, {
+    var controllerId = Session.get('controller_id');
+    return SensorData.find({ controllerId: controllerId }, {
       sort: {
         created_at: -1
       }

app/server/api.js

@@ -13,6 +13,7 @@ Api.addRoute('sensorData', {
       humidityValue: parseFloat(this.bodyParams.humidityValue),
       tankFull: this.bodyParams.tankFull,
       owner: this.bodyParams.owner,
+      controllerId: this.bodyParams.controllerId,
       created_at: new Date()
     });
     return [];