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Diffstat (limited to 'ishtar_common/models.py')
| -rw-r--r-- | ishtar_common/models.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/ishtar_common/models.py b/ishtar_common/models.py index 11ac75876..b7d6004c3 100644 --- a/ishtar_common/models.py +++ b/ishtar_common/models.py @@ -675,6 +675,21 @@ class RelationItem(models.Model): full=full, ) + def clean_relations(self): + # clean duplicates + for side in ("right", "left"): + currents = [] + rels = getattr(self, f"{side}_relations") + for relation in list(rels.all()): + key = (getattr(relation, f"{side}_record_id"), + relation.relation_type_id) + if key not in currents: + currents.append(key) + else: + relation._no_cascade_delete = True + # prevent cascade delete + relation.delete() + class JsonDataSectionManager(models.Manager): def get_by_natural_key(self, name, app_label, model): @@ -869,6 +884,9 @@ class GeneralRecordRelations(Imported): def post_delete_record_relation(sender, instance, **kwargs): + if getattr(instance, "_no_cascade_delete", False): + # do not delete on "clean_relations" call + return # delete symmetrical or inverse relation sym_rel_type = instance.relation_type if not instance.relation_type.symmetrical: |