Allow additional arguments to be used during type map lookups

Determining things like precision and scale in postgresql will require
the given blocks to take additional arguments besides the OID.

- Adds the ability to handle additional arguments to `TypeMap`
- Passes the column type to blocks when looking up PG types

1 files changed, 2 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index ed3e884455..811c5b5c7a 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -538,12 +538,12 @@ module ActiveRecord
 
       private
 
-        def get_oid_type(oid, fmod, column_name)
+        def get_oid_type(oid, fmod, column_name, sql_type = '')
           if !type_map.key?(oid)
             initialize_type_map(type_map, [oid])
           end
 
-          type_map.fetch(normalize_oid_type(oid, fmod)) {
+          type_map.fetch(normalize_oid_type(oid, fmod), sql_type) {
             warn "unknown OID #{oid}: failed to recognize type of '#{column_name}'. It will be treated as String."
             Type::Value.new.tap do |cast_type|
               type_map.register_type(oid, cast_type)