Move array database type casting to the Array type

The case where we have a column object, but don't have a type cast
method involves type casting the default value when changing the schema.
We get one of the column definition structs instead. That is a case that
I'm trying to remove overall, but in the short term, we can achieve the
same behavior without needing to pass the adapter to the array type by
creating a fake type that proxies to the adapter.

1 files changed, 10 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/type/date_time.rb b/activerecord/lib/active_record/type/date_time.rb
index 560d63c101..5f19608a33 100644
--- a/activerecord/lib/active_record/type/date_time.rb
+++ b/activerecord/lib/active_record/type/date_time.rb
@@ -7,6 +7,16 @@ module ActiveRecord
         :datetime
       end
 
+      def type_cast_for_database(value)
+        zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal
+
+        if value.acts_like?(:time)
+          value.send(zone_conversion_method)
+        else
+          super
+        end
+      end
+
       private
 
       def cast_value(string)