Create change object for new strings (issue #241)

trans/models/changes.py

@@ -144,6 +144,7 @@ class Change(models.Model):
     ACTION_DICTIONARY_NEW = 10
     ACTION_DICTIONARY_EDIT = 11
     ACTION_DICTIONARY_UPLOAD = 12
+    ACTION_NEW_SOURCE = 13
 
     ACTION_CHOICES = (
         (ACTION_UPDATE, ugettext_lazy('Resource update')),
@@ -159,6 +160,7 @@ class Change(models.Model):
         (ACTION_DICTIONARY_NEW, ugettext_lazy('Glossary added')),
         (ACTION_DICTIONARY_EDIT, ugettext_lazy('Glossary updated')),
         (ACTION_DICTIONARY_UPLOAD, ugettext_lazy('Glossary uploaded')),
+        (ACTION_NEW_SOURCE, ugettext_lazy('New source string')),
     )
 
     unit = models.ForeignKey(Unit, null=True)

trans/models/unit.py

@@ -444,11 +444,23 @@ class Unit(models.Model):
         )
 
         # Ensure we track source string
-        Source.objects.get_or_create(
+        dummy, created = Source.objects.get_or_create(
             checksum=self.checksum,
             subproject=self.translation.subproject
         )
 
+        # Create change object for new source string
+        if created:
+            from trans.models.changes import Change
+
+            Change.objects.create(
+                translation=self.translation,
+                action=Change.ACTION_NEW_SOURCE,
+                user=request.user,
+                unit=self,
+                author=user
+            )
+
     def is_plural(self):
         '''
         Checks whether message is plural.