app/models/effective/log.rb in effective_logging-1.10.0 vs app/models/effective/log.rb in effective_logging-1.10.1

@@ -11,11 +11,16 @@
     belongs_to :parent, class_name: 'Effective::Log', counter_cache: true
     has_many :logs, class_name: 'Effective::Log', foreign_key: :parent_id
 
     # The user this log item is referring to
     # An associated object, if we wanna add anything extra
-    belongs_to :user, optional: true
-    belongs_to :associated, polymorphic: true, optional: true
+    if Gem::Version.new(Rails.version) < Gem::Version.new('5.0')
+      belongs_to :user
+      belongs_to :associated, polymorphic: true
+    else
+      belongs_to :user, optional: true
+      belongs_to :associated, polymorphic: true, optional: true
+    end
 
     serialize :details, Hash
 
     # Attributes
     # logs_count          :integer  # Rails Counter Cache