1 files changed, 5 insertions, 17 deletions
diff --git a/archaeological_context_records/models.py b/archaeological_context_records/models.py
index 70858ea31..8dd082e7b 100644
--- a/archaeological_context_records/models.py
+++ b/archaeological_context_records/models.py
@@ -33,7 +33,7 @@ from ishtar_common.utils import cached_label_changed
 from ishtar_common.models import GeneralType, BaseHistorizedItem, \
     HistoricalRecords, OwnPerms, ShortMenuItem, Source, GeneralRelationType,\
     GeneralRecordRelations, post_delete_record_relation, get_external_id, \
-    ImageModel, post_save_cache, ValueGetter, BulkUpdatedItem
+    ImageModel, post_save_cache, ValueGetter, BulkUpdatedItem, ExternalIdManager
 from archaeological_operations.models import Operation, Period, Parcel
 
 
@@ -189,10 +189,12 @@ class CRBulkView(object):
     """
 
 
-class ContextRecord(BulkUpdatedItem, BaseHistorizedItem, ImageModel, OwnPerms,
-                    ValueGetter, ShortMenuItem):
+class ContextRecord(ExternalIdManager, BulkUpdatedItem, BaseHistorizedItem,
+                    ImageModel, OwnPerms, ValueGetter, ShortMenuItem):
     SHOW_URL = 'show-contextrecord'
     SLUG = 'contextrecord'
+    EXTERNAL_ID_KEY = 'context_record_external_id'
+    EXTERNAL_ID_DEPENDENCIES = ['base_finds']
     TABLE_COLS = ['label', 'operation__common_name', 'parcel__town__name',
                   'parcel__label', 'unit']
     if settings.COUNTRY == 'fr':
@@ -518,20 +520,6 @@ class ContextRecord(BulkUpdatedItem, BaseHistorizedItem, ImageModel, OwnPerms,
         from archaeological_finds.models import FindSource
         return FindSource.objects.filter(find__base_finds__context_record=self)
 
-    def save(self, *args, **kwargs):
-        returned = super(ContextRecord, self).save(*args, **kwargs)
-        updated = False
-        if not self.external_id or self.auto_external_id:
-            external_id = get_external_id('context_record_external_id', self)
-            if external_id != self.external_id:
-                updated = True
-                self.auto_external_id = True
-                self.external_id = external_id
-        if updated:
-            self._cached_label_checked = False
-            self.save()
-        return returned
-
     def fix(self):
         """
         Fix redundant m2m dating association (usually after imports)