From cbaefffabc756a7922481263fe12a335467e5d44 Mon Sep 17 00:00:00 2001
From: Jakub Trllo <43494761+iLLiCiTiT@users.noreply.github.com>
Date: Tue, 11 Feb 2025 18:55:04 +0100
Subject: [PATCH] multiselection EnumDef allows empty items

---
 client/ayon_core/lib/attribute_definitions.py | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/client/ayon_core/lib/attribute_definitions.py b/client/ayon_core/lib/attribute_definitions.py
index e8327a45b6..f3de4fc943 100644
--- a/client/ayon_core/lib/attribute_definitions.py
+++ b/client/ayon_core/lib/attribute_definitions.py
@@ -562,17 +562,18 @@ class EnumDef(AbstractAttrDef):
         multiselection: Optional[bool] = False,
         **kwargs
     ):
-        if not items:
-            raise ValueError((
-                "Empty 'items' value. {} must have"
+        if multiselection is None:
+            multiselection = False
+
+        if not items and not multiselection:
+            raise ValueError(
+                f"Empty 'items' value. {self.__class__.__name__} must have"
                 " defined values on initialization."
-            ).format(self.__class__.__name__))
+            )
 
         items = self.prepare_enum_items(items)
         item_values = [item["value"] for item in items]
         item_values_set = set(item_values)
-        if multiselection is None:
-            multiselection = False
 
         if multiselection:
             if default is None: