1 files changed, 9 insertions, 7 deletions
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py
index 1bf51120a..8f5f1aace 100644
--- a/archaeological_operations/models.py
+++ b/archaeological_operations/models.py
@@ -20,6 +20,7 @@
 from collections import OrderedDict
 import datetime
 from itertools import groupby
+import uuid
 
 from django.conf import settings
 from django.contrib.gis.db import models
@@ -579,8 +580,8 @@ class ClosedItem(object):
 
 
 class OperationManager(models.GeoManager):
-    def get_by_natural_key(self, txt_idx):
-        return self.get(code_patriarche=txt_idx)
+    def get_by_natural_key(self, uuid):
+        return self.get(uuid=uuid)
 
 
 class Operation(ClosedItem, DocumentItem, BaseHistorizedItem, QRCodeItem,
@@ -900,6 +901,7 @@ class Operation(ClosedItem, DocumentItem, BaseHistorizedItem, QRCodeItem,
     ]
 
     # fields definition
+    uuid = models.UUIDField(default=uuid.uuid4)
     creation_date = models.DateField(_("Creation date"),
                                      default=datetime.date.today)
     end_date = models.DateField(_("Closing date"), null=True, blank=True)
@@ -1065,7 +1067,7 @@ class Operation(ClosedItem, DocumentItem, BaseHistorizedItem, QRCodeItem,
         ordering = ('cached_label',)
 
     def natural_key(self):
-        return (self.code_patriarche, )
+        return (self.uuid, )
 
     @classmethod
     def get_owns(cls, user, menu_filtr=None, limit=None, values=None,
@@ -1657,8 +1659,8 @@ class RelationType(GeneralRelationType):
 class OperationRecordRelationManager(models.Manager):
     def get_by_natural_key(self, left_record, right_record, relation_type):
         return self.get(
-            left_record__code_patriarche=left_record,
-            right_record__code_patriarche=right_record,
+            left_record__uuid=left_record,
+            right_record__uuid=right_record,
             relation_type__txt_idx=relation_type)
 
 
@@ -1680,8 +1682,8 @@ class RecordRelations(GeneralRecordRelations, models.Model):
         ]
 
     def natural_key(self):
-        return (self.left_record.code_patriarche,
-                self.right_record.code_patriarche, self.relation_type.txt_idx)
+        return (self.left_record.uuid,
+                self.right_record.uuid, self.relation_type.txt_idx)
 
 
 post_delete.connect(post_delete_record_relation, sender=RecordRelations)