app/models/spina/page_part.rb in spina-0.10.0 vs app/models/spina/page_part.rb in spina-0.11.0

@@ -1,10 +1,10 @@
 module Spina
   class PagePart < ApplicationRecord
     include Part
 
     belongs_to :page, inverse_of: :page_parts
-    belongs_to :page_partable, polymorphic: true
+    belongs_to :page_partable, polymorphic: true, optional: true
 
     accepts_nested_attributes_for :page_partable, allow_destroy: true
 
     validates :name, uniqueness: {scope: :page_id}