Simplifies the validation

src/documents/serialisers.py

@@ -33,6 +33,7 @@ if settings.AUDIT_LOG_ENABLED:
 
 from documents import bulk_edit
 from documents.data_models import DocumentSource
+from documents.file_handling import validate_template_and_render
 from documents.models import Correspondent
 from documents.models import CustomField
 from documents.models import CustomFieldInstance
@@ -1479,36 +1480,11 @@ class StoragePathSerializer(MatchingModelSerializer, OwnedObjectSerializer):
             "set_permissions",
         )
 
-    def validate_path(self, path):
-        try:
-            path.format(
-                title="title",
-                correspondent="correspondent",
-                document_type="document_type",
-                created="created",
-                created_year="created_year",
-                created_year_short="created_year_short",
-                created_month="created_month",
-                created_month_name="created_month_name",
-                created_month_name_short="created_month_name_short",
-                created_day="created_day",
-                added="added",
-                added_year="added_year",
-                added_year_short="added_year_short",
-                added_month="added_month",
-                added_month_name="added_month_name",
-                added_month_name_short="added_month_name_short",
-                added_day="added_day",
-                asn="asn",
-                tags="tags",
-                tag_list="tag_list",
-                owner_username="someone",
-                original_name="testfile",
-                doc_pk="doc_pk",
-            )
+    def validate_path(self, path: str):
+        result = validate_template_and_render(path)
 
-        except KeyError as err:
-            raise serializers.ValidationError(_("Invalid variable detected.")) from err
+        if result is None:
+            raise serializers.ValidationError(_("Invalid variable detected."))
 
         return path