beacon manager

BeHub/Hub/models.py

@@ -27,7 +27,7 @@ class Beacon(models.Model):
     description = models.CharField(max_length=300, null=True)
     longitude = models.DecimalField(max_digits=9, decimal_places=6)
     latitude = models.DecimalField(max_digits=9, decimal_places=6)
-    beacon_manager = models.OneToOneField('BeaconManager', blank=True, related_name='beacon_manager')
+    beacon_manager = models.OneToOneField('BeaconManager', blank=True, related_name='beacon_manager', null=True)
 
     def __str__(self):
         return "name: {name}, uuid:{uuid}".format(name=self.name, uuid=self.uuid)