fixed problem with the duration of auto created follow up visits. relative...

fixed problem with the duration of auto created follow up visits. relative date was in days instead of months

smash/web/models/visit.py

@@ -9,6 +9,8 @@ from django.dispatch import receiver
 from web.models.constants import BOOL_CHOICES, SUBJECT_TYPE_CHOICES_CONTROL
 from web.models import Study
 
+import logging
+logger = logging.getLogger(__name__)
 
 class Visit(models.Model):
 
@@ -79,10 +81,12 @@ class Visit(models.Model):
             
             time_to_next_visit = relativedelta(**args) * (follow_up_number - 1) #calculated from first visit
 
+            logger.warn('new visit: {} {} {}'.format(args, relativedelta(**args), time_to_next_visit))
+
             Visit.objects.create(
                 subject=self.subject,
                 datetime_begin=visit_started + time_to_next_visit,
-                datetime_end=visit_started + time_to_next_visit + datetime.timedelta(days=study.default_visit_duration_in_months)
+                datetime_end=visit_started + time_to_next_visit + relativedelta(months=study.default_visit_duration_in_months)
             )