Count words when working with translation

trans/models/translation.py

@@ -593,6 +593,15 @@ class Translation(models.Model, URLMixin):
         '''
         Updates translation statistics.
         '''
+        self.total_words = self.unit_set.aggegate(
+            Sum('num_words')
+        )['num_words']
+        self.translated_words = self.unit_set.filter(
+            translated=True
+        ).aggegate(
+            Sum('num_words')
+        )['num_words']
+
         self.total = self.unit_set.count()
         self.fuzzy = self.unit_set.filter(
             fuzzy=True
@@ -600,12 +609,14 @@ class Translation(models.Model, URLMixin):
         self.translated = self.unit_set.filter(
             translated=True
         ).count()
+
         self.failing_checks = self.unit_set.filter(
             has_failing_check=True
         ).count()
         self.have_suggestion = self.unit_set.filter(
             has_suggestion=True
         ).count()
+
         self.save()
         self.store_hash()