Merge branch 'master' into adequaterecord

* master: (311 commits)
  Add a missing changelog entry for #13981 and #14035
  Revert "Fixed plugin_generator test"
  implements new option :month_format_string for date select helpers [Closes #13618]
  add factory methods for empty alias trackers
  guarantee a list in the alias tracker so we can remove a conditional
  stop exposing table_joins
  make most parameters to the AliasTracker required
  make a singleton for AssociationScope
  pass the association and connection to the scope method
  pass the tracker down the stack and construct it in the scope method
  clean up add_constraints signature
  remove the reflection delegate
  remove klass delegator
  remove railties changes. fixes #14054
  remove chain delegate
  remove scope_chain delegate
  Add verb to sanitization note
  fix path shown in mailer's templates
  updated Travis build status image url
  fix guide active_support_core_extensions. add Note to String#indent [ci skip]
  ...

Conflicts:
	activerecord/lib/active_record/associations/join_dependency.rb
	activerecord/test/cases/associations/association_scope_test.rb

1 files changed, 18 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb
index d484659190..67abbbc2a0 100644
--- a/activerecord/lib/active_record/attribute_methods/serialization.rb
+++ b/activerecord/lib/active_record/attribute_methods/serialization.rb
@@ -115,6 +115,14 @@ module ActiveRecord
           end
         end
 
+        def should_record_timestamps?
+          super || (self.record_timestamps && (attributes.keys & self.class.serialized_attributes.keys).present?)
+        end
+
+        def keys_for_partial_write
+          super | (attributes.keys & self.class.serialized_attributes.keys)
+        end
+
         def type_cast_attribute_for_write(column, value)
           if column && coder = self.class.serialized_attributes[column.name]
             Attribute.new(coder, value, :unserialized)
@@ -156,6 +164,16 @@ module ActiveRecord
             super
           end
         end
+
+        def attributes_for_coder
+          attribute_names.each_with_object({}) do |name, attrs|
+            attrs[name] = if self.class.serialized_attributes.include?(name)
+                            @attributes[name].serialized_value
+                          else
+                            read_attribute(name)
+                          end
+          end
+        end
       end
     end
   end