adding tombstones

rowers/models.py

@@ -2506,7 +2506,6 @@ class PlannedSessionFormSmall(ModelForm):
 boattypes = mytypes.boattypes
     
 # Workout
-@python_2_unicode_compatible
 class Workout(models.Model):
     workouttypes = mytypes.workouttypes
     workoutsources = mytypes.workoutsources
@@ -2611,7 +2610,28 @@ class Workout(models.Model):
             )
             
         return stri
+    
+class TombStone(models.Model):
+    user = models.ForeignKey(Rower,on_delete=models.CASCADE)
+    uploadedtoc2 = models.IntegerField(default=0)
+    uploadedtostrava = models.BigIntegerField(default=0)
+    uploadedtosporttracks = models.BigIntegerField(default=0)
+    uploadedtounderarmour = models.BigIntegerField(default=0)
+    uploadedtotp = models.BigIntegerField(default=0)
+    uploadedtorunkeeper = models.BigIntegerField(default=0)
 
+@receiver(models.signals.pre_delete,sender=Workout)
+def create_tombstone_on_delete(sender, instance, **kwargs):
+    t = TombStone(
+        user=instance.user,
+        uploadedtoc2 = instance.uploadedtoc2,
+        uploadedtostrava = instance.uploadedtostrava,
+        uploadedtounderarmour = instance.uploadedtounderarmour,
+        uploadedtotp = instance.uploadedtotp,
+        uploadedtorunkeeper = instance.uploadedtorunkeeper,
+    )
+    t.save()
+    
 # delete files belonging to workout instance
 # related GraphImage objects should be deleted automatically
 @receiver(models.signals.post_delete,sender=Workout)