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-rw-r--r--archaeological_operations/models.py13
1 files changed, 13 insertions, 0 deletions
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py
index c1f03368b..1bf51120a 100644
--- a/archaeological_operations/models.py
+++ b/archaeological_operations/models.py
@@ -1654,6 +1654,14 @@ class RelationType(GeneralRelationType):
ordering = ('order', 'label')
+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,
+ relation_type__txt_idx=relation_type)
+
+
class RecordRelations(GeneralRecordRelations, models.Model):
MAIN_ATTR = 'left_record'
left_record = models.ForeignKey(Operation,
@@ -1661,6 +1669,7 @@ class RecordRelations(GeneralRecordRelations, models.Model):
right_record = models.ForeignKey(Operation,
related_name='left_relations')
relation_type = models.ForeignKey(RelationType)
+ objects = OperationRecordRelationManager()
class Meta:
verbose_name = _("Operation record relation")
@@ -1670,6 +1679,10 @@ class RecordRelations(GeneralRecordRelations, models.Model):
("view_operationrelation", "Can view all Operation relations"),
]
+ def natural_key(self):
+ return (self.left_record.code_patriarche,
+ self.right_record.code_patriarche, self.relation_type.txt_idx)
+
post_delete.connect(post_delete_record_relation, sender=RecordRelations)