1 files changed, 11 insertions, 5 deletions
diff --git a/archaeological_context_records/models.py b/archaeological_context_records/models.py
index 4f1711d31..d2faebc1e 100644
--- a/archaeological_context_records/models.py
+++ b/archaeological_context_records/models.py
@@ -17,8 +17,6 @@
 
 # See the file COPYING for details.
 
-import datetime
-
 from django.conf import settings
 from django.contrib.gis.db import models
 from django.core.urlresolvers import reverse
@@ -29,13 +27,14 @@ from django.utils.translation import ugettext_lazy as _, pgettext, \
     activate, pgettext_lazy, deactivate
 from django.utils.text import slugify
 
-from ishtar_common.utils import cached_label_changed
+from ishtar_common.utils import cached_label_changed, m2m_historization_changed
 
 from ishtar_common.models import Document, GeneralType, \
     BaseHistorizedItem, HistoricalRecords, OwnPerms, ShortMenuItem, \
     GeneralRelationType, GeneralRecordRelations, post_delete_record_relation,\
     post_save_cache, ValueGetter, BulkUpdatedItem, ExternalIdManager, \
-    RelationItem, Town, get_current_profile, document_attached_changed
+    RelationItem, Town, get_current_profile, document_attached_changed, \
+    HistoryModel
 from archaeological_operations.models import Operation, Period, Parcel, \
     ArchaeologicalSite
 
@@ -396,8 +395,11 @@ class ContextRecord(BulkUpdatedItem, BaseHistorizedItem,
         ('site', 'archaeological_site__pk'),
         ('file', 'operation__associated_file__pk'),
     ]
+    HISTORICAL_M2M = [
+        'datings', 'documentations'
+    ]
 
-    history = HistoricalRecords()
+    history = HistoricalRecords(bases=[HistoryModel])
     objects = ExternalIdManager()
 
     # fields
@@ -731,6 +733,10 @@ post_save.connect(cached_label_changed, sender=ContextRecord)
 m2m_changed.connect(document_attached_changed,
                     sender=ContextRecord.documents.through)
 
+for attr in ContextRecord.HISTORICAL_M2M:
+    m2m_changed.connect(m2m_historization_changed,
+                        sender=getattr(ContextRecord, attr).through)
+
 
 class RelationType(GeneralRelationType):
     class Meta: