Warehouse: new slug field to prevent ID change when name is changed

1 files changed, 12 insertions, 5 deletions

diff --git a/archaeological_warehouse/models.py b/archaeological_warehouse/models.py
index 3f4913d4b..5d96e6863 100644
--- a/archaeological_warehouse/models.py
+++ b/archaeological_warehouse/models.py
@@ -320,6 +320,7 @@ class Warehouse(
     }
     GEO_LABEL = "name"
     DOWN_MODEL_UPDATE = ["containers"]
+    FORCE_CASCADE_UPDATE = True
     CACHED_LABELS = ["cached_town_label"]
 
     QA_EDIT = QuickAction(
@@ -346,6 +347,7 @@ class Warehouse(
 
     uuid = models.UUIDField(default=uuid.uuid4)
     name = models.CharField(_("Name"), max_length=200)
+    slug = models.SlugField(_("Textual ID"), blank=True, default="", max_length=200)
     warehouse_type = models.ForeignKey(
         WarehouseType, verbose_name=_("Warehouse type"), on_delete=models.PROTECT
     )
@@ -658,15 +660,20 @@ class Warehouse(
         self.update_search_vector()
         super(Warehouse, self).save(*args, **kwargs)
 
-        self.skip_history_when_saving = True
+        updated = False
+        if not self.slug and self.name:
+            self.slug = slugify(self.name)[:200]
+            updated = True
         if not self.external_id or self.auto_external_id:
             external_id = get_generated_id("warehouse_external_id", self)
             if external_id != self.external_id:
-                self.auto_external_id = True
                 self.external_id = external_id
-                self._cached_label_checked = False
-                self.save()
-                return
+                updated = True
+        if updated:
+            self.skip_history_when_saving = True
+            self._cached_label_checked = False
+            self.force_update = True
+            self.save()
 
 
 m2m_changed.connect(document_attached_changed, sender=Warehouse.documents.through)