Include old translation in notification (issue #101)

weblate/accounts/models.py

@@ -139,7 +139,7 @@ class Profile(models.Model):
         finally:
             translation.activate(cur_language)
 
-    def notify_any_translation(self, unit):
+    def notify_any_translation(self, unit, oldunit):
         '''
         Sends notification on translation.
         '''
@@ -148,6 +148,7 @@ class Profile(models.Model):
             unit.translation,
             {
                 'unit': unit,
+                'oldunit': oldunit,
             }
         )
 

weblate/html/mail/any_translation.txt

@@ -11,4 +11,8 @@ there has been new translation on {{ translation }} at {{ site_title }}.
 
 {{ unit.target }}
 
+{% trans "Previous translation:" %}
+
+{{ oldunit.target }}
+
 {% endfilter%}{% endautoescape %}{% include "mail/footer.txt" %}

weblate/trans/models.py

@@ -1705,6 +1705,9 @@ class Unit(models.Model):
         else:
             self.flags = ''
 
+        # Get old unit from database (for notifications)
+        oldunit = Unit.objects.get(id = self.id)
+
         # Save updated unit to database
         self.save(backend = True)
 
@@ -1718,7 +1721,7 @@ class Unit(models.Model):
             self.translation.language
         )
         for subscription in subscriptions:
-            subscription.notify_any_translation(self)
+            subscription.notify_any_translation(self, oldunit)
 
         # Force commiting on completing translation
         if old_translated < self.translation.translated and self.translation.translated == self.translation.total: