⬆️ make filingcabinet compatible with treebeard v5

Author: krmax44

pyproject.toml

@@ -12,7 +12,7 @@ dependencies = [
   "django-json-widget",
   "jsonschema",
   "django-taggit>=2",
-  "django-treebeard",
+  "django-treebeard>=5",
   "djangorestframework",
   "reportlab",
   "celery",

src/filingcabinet/migrations/0026_auto_20220920_1828.py

@@ -14,7 +14,11 @@ def __init__(self):
         self.stmts = []
 
 
-NUM = NumConv(len(ALPHABET), ALPHABET)
+# inspired by https://github.com/django-cms/django-cms/commit/e0e55e59be84d4a3ee070aefcda7995cc1383afa
+try:
+    NUM = NumConv(len(ALPHABET), ALPHABET)
+except TypeError:
+    NUM = NumConv(ALPHABET)
 
 
 def _int2str(num):
@@ -151,7 +155,6 @@ def move_to_mp(apps, schema_editor):
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("filingcabinet", "0025_collectiondirectory_depth_and_more"),
     ]