#63 Replacing vote expiration with vote accuarcy

django_lostplaces/lostplaces/models/place.py

@@ -1,11 +1,13 @@
 import os
-from math import floor
+import datetime
+from math import round, ceil
 
 from django.db import models
 from django.urls import reverse
 from django.dispatch import receiver
 from django.db.models.signals import post_delete, pre_save
 from django.utils.translation import gettext as _
+from django.utils import timezone
 from django.conf import settings
 
 from lostplaces.models.abstract_models import Submittable, Taggable, Mapable, Expireable
@@ -92,8 +94,6 @@ class Place(Submittable, Taggable, Mapable):
         return {'latitude': latitude, 'longitude': longitude}
 
     def calculate_place_level(self):
-        self.remove_expired_votes()
-
         if self.placevotings.count() == 0:
             self.level = 5
             self.save()
@@ -104,13 +104,19 @@ class Place(Submittable, Taggable, Mapable):
         for vote in self.placevotings.all():
             level += vote.vote
 
-        self.level = floor(level / self.placevotings.count())
+        self.level = round(level / self.placevotings.count())
         self.save()
         
-    def remove_expired_votes(self):
+    def calculate_voting_accuracy(self):
+        place_age = timezone.now() - self.submitted_when;
+        accuaries = [];
+
         for vote in self.placevotings.all():
-            if vote.is_expired:
-                vote.delete()
+            vote_age = timezone.now() - vote.created_when;
+            accuracy = 100 - (100 / (place_age / vote_age))
+            accuaries.append(accuracy)
+        
+        return ceil(sum(accuaries) / len(accuaries))
 
     def __str__(self):
         return self.name