Make valid_type? public

activerecord/lib/active_record/connection_adapters/abstract_adapter.rb

@@ -305,6 +305,10 @@ def close
         pool.checkin self
       end
 
+      def valid_type?(type)
+        true
+      end
+
       protected
 
       def log(sql, name = "SQL", binds = [])
@@ -326,10 +330,6 @@ def translate_exception(exception, message)
         # override in derived class
         ActiveRecord::StatementInvalid.new(message)
       end
-
-      def valid_types?(type)
-        true
-      end
     end
   end
 end

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -582,6 +582,10 @@ def strict_mode?
         @config.fetch(:strict, true)
       end
 
+      def valid_type?(type)
+        !native_database_types[type].nil?
+      end  
+
       protected
 
       # MySQL is too stupid to create a temporary table for use subquery, so we have
@@ -747,10 +751,6 @@ def configure_connection
         # ...and send them all in one query
         execute("SET #{encoding} #{variable_assignments}", :skip_logging)
       end
-
-      def valid_type?(type)
-        !native_database_types[type].nil?
-      end  
     end
   end
 end

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -655,6 +655,10 @@ def use_insert_returning?
         @use_insert_returning
       end
 
+      def valid_type?(type)
+        !native_database_types[type].nil?
+      end
+
       protected
 
         # Returns the version of the connected PostgreSQL server.
@@ -887,10 +891,6 @@ def extract_table_ref_from_insert_sql(sql)
         def table_definition
           TableDefinition.new(self)
         end
-
-        def valid_type?(type)
-          !native_database_types[type].nil?
-        end
     end
   end
 end

activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb

@@ -602,11 +602,6 @@ def translate_exception(exception, message)
             super
           end
         end
-
-        def valid_type?(type)
-          true
-        end
-
     end
   end
 end