navigation.rb in ecm_cms2-4.1.1

- old
+ new

@@ -5,10 +5,11 @@
            dependent: :destroy,
            foreign_key: 'ecm_cms_navigation_id'
 
   # validations
   validates :locale, inclusion: I18n.available_locales.map(&:to_s),
-                     allow_nil: true
+                     allow_nil: true,
+                     allow_blank: true
   validates :name, presence: true,
                    uniqueness: { scope: [:locale] }
 
   delegate :count, to: :ecm_cms_navigation_items, prefix: true
 