added property to get provenances

smash/web/models/study_subject.py

@@ -3,19 +3,22 @@ import logging
 import re
 from django.db import models
 
-from web.models import VoucherType, Appointment, Location, Visit
+from web.models import VoucherType, Appointment, Location, Visit, Provenance
 from web.models.constants import BOOL_CHOICES, SUBJECT_TYPE_CHOICES, FILE_STORAGE
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 
 logger = logging.getLogger(__name__)
 
-
 class StudySubject(models.Model):
 
     class Meta:
         app_label = 'web'
 
+    @property
+    def provenances(self):
+      return Provenance.objects.filter(modified_table=StudySubject._meta.db_table).filter(modified_table_id=self.id).order_by('-modification_date')
+
     def finish_all_visits(self):
         visits = Visit.objects.filter(subject=self, is_finished=False)
         for visit in visits:

smash/web/models/subject.py

@@ -14,6 +14,10 @@ class Subject(models.Model):
 
     class Meta:
         app_label = 'web'
+    
+    @property
+    def provenances(self):
+      return Provenance.objects.filter(modified_table=Subject._meta.db_table).filter(modified_table_id=self.id).order_by('-modification_date')
 
     sex = models.CharField(max_length=1,
                            choices=SEX_CHOICES,