Introduce an Attribute object to handle the type casting dance

There's a lot more that can be moved to these, but this felt like a good
place to introduce the object. Plans are:

- Remove all knowledge of type casting from the columns, beyond a
  reference to the cast_type
- Move type_cast_for_database to these objects
- Potentially make them mutable, introduce a state machine, and have
  dirty checking handled here as well
- Move `attribute`, `decorate_attribute`, and anything else that
  modifies types to mess with this object, not the columns hash
- Introduce a collection object to manage these, reduce allocations, and
  not require serializing the types

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/composite_test.rb b/activerecord/test/cases/adapters/postgresql/composite_test.rb
index 0b48fe9af8..42c68cdae7 100644
--- a/activerecord/test/cases/adapters/postgresql/composite_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/composite_test.rb
@@ -84,7 +84,7 @@ class PostgresqlCompositeWithCustomOIDTest < ActiveRecord::TestCase
   class FullAddressType < ActiveRecord::Type::Value
     def type; :full_address end
 
-    def type_cast(value)
+    def type_cast_from_database(value)
       if value =~ /\("?([^",]*)"?,"?([^",]*)"?\)/
         FullAddress.new($1, $2)
       end