fixing export error

rowers/rower_rules.py

@@ -440,6 +440,18 @@ WORKOUT permissions
 
 # check if user is owner or coach of owner of workout
 
+@rules.predicate
+def is_workout_owner(user, workout):
+    if user.is_anonymous:
+        return False
+
+    try:
+        r = user.rower
+    except AttributeError:  # pragma: no cover
+        return False
+
+    return workout.user.user == user
+
 
 @rules.predicate
 def is_workout_user(user, workout):
@@ -507,7 +519,7 @@ can_change_workout = is_workout_user
 rules.add_perm('workout.change_workout', can_change_workout)
 # replaces checkworkoutuserview
 rules.add_perm('workout.view_workout', can_view_workout)
-
+rules.add_perm('workout.is_owner', is_workout_owner)
 
 # checkviewworkouts