Fix material_type_label helper

1 files changed, 12 insertions, 6 deletions

diff --git a/archaeological_finds/models_finds.py b/archaeological_finds/models_finds.py
index d825a8bb2..303d8e2b4 100644
--- a/archaeological_finds/models_finds.py
+++ b/archaeological_finds/models_finds.py
@@ -631,12 +631,18 @@ class BaseFind(
         return self._real_label() or self._temp_label() or ""
 
     def material_type_label(self):
-        find = self.get_last_find()
-        finds = [find and find.material_type.code or ""]
-        ope = self.context_record.operation
-        finds += [ope.code_patriarche or (str(ope.year) + "-" + ope.operation_code)]
-        finds += [self.context_record.label, str(self.material_index)]
-        return settings.JOINT.join(finds)
+        materials = set()
+        for f in self.find.all():
+            for m in f.material_types.all():
+                while m:
+                    if m.code:
+                        materials.add(m.code)
+                        break
+                    elif m.parent:
+                        m = m.parent
+                    else:
+                        break
+        return "-".join(materials)
 
     def _real_label(self):
         if (