old_contents: from django.db import models
  from django.utils import timezone
  
  # Create your models here.
  
  def formatDateTime(dateTime):
      return timezone.localtime(dateTime).strftime("%Y-%m-%d %H:%M:%S")
  
  class Beacon(models.Model):
      macAddr = models.CharField(max_length=20)
      uuid    = models.UUIDField(editable=False)
      major   = models.CharField(max_length=10, null=False)
      minor   = models.CharField(max_length=10, null=False)
  
      def getDict(self):
          dict = {}
          dict['macAddr'] = self.macAddr
          dict['uuid'] = self.uuid
          dict['major'] = self.major
          dict['minor'] = self.minor
          return dict
  
      class Meta:
          unique_together = ('uuid', 'major', 'minor')
  
  class BeaconLog(models.Model):
      time         = models.DateTimeField(null=False)
      rssi         = models.IntegerField(null=False)
      measurePower = models.IntegerField(null=False)
      beacon       = models.ForeignKey(Beacon, on_delete=models.CASCADE)
  
      def __str__(self):
          return "{} | {} | {}".format(self.time, self.rssi, self.measurePower)
  
      def getDict(self):
          dict = {}
          dict['time'] = formatDateTime(self.time)
          dict['rssi'] = self.rssi
          dict['measurePower'] = self.measurePower
          return dict
  
  
  class Event(models.Model):
      time  = models.DateTimeField(null=False)
      event = models.TextField(null=False)
  
      def getDict(self):
          dict = {}
          dict['time'] = formatDateTime(self.time)
          dict['event'] = self.event
          return dict
  
  
new_contents: from django.db import models
  from django.utils import timezone
  
  # Create your models here.
  
  def formatDateTime(dateTime):
      return timezone.localtime(dateTime).strftime("%Y-%m-%d %H:%M:%S")
  
  class Beacon(models.Model):
      macAddr = models.CharField(max_length=20)
      uuid    = models.UUIDField(editable=False)
      major   = models.CharField(max_length=10, null=False)
      minor   = models.CharField(max_length=10, null=False)
  
      def getDict(self):
          dict = {}
          dict['macAddr'] = self.macAddr
          dict['uuid'] = str(self.uuid)
          dict['major'] = self.major
          dict['minor'] = self.minor
          return dict
  
      class Meta:
          unique_together = ('uuid', 'major', 'minor')
  
  class BeaconLog(models.Model):
      time         = models.DateTimeField(null=False)
      rssi         = models.IntegerField(null=False)
      measurePower = models.IntegerField(null=False)
      beacon       = models.ForeignKey(Beacon, on_delete=models.CASCADE)
  
      def __str__(self):
          return "{} | {} | {}".format(self.time, self.rssi, self.measurePower)
  
      def getDict(self):
          dict = {}
          dict['time'] = formatDateTime(self.time)
          dict['rssi'] = self.rssi
          dict['measurePower'] = self.measurePower
          return dict
  
  
  class Event(models.Model):
      time  = models.DateTimeField(null=False)
      event = models.TextField(null=False)
  
      def getDict(self):
          dict = {}
          dict['time'] = formatDateTime(self.time)
          dict['event'] = self.event
          return dict
  
  
subject: apply str function to uuid object for dict