checking in the abstractions for valid type checking:

4 files changed, 15 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index cbb6869e66..9cdca020dd 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -314,6 +314,10 @@ module ActiveRecord
         # override in derived class
         ActiveRecord::StatementInvalid.new(message)
       end
+
+      def valid_types?(type)
+        true
+      end
     end
   end
 end
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 52b0b3fe79..25860d5fae 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -750,6 +750,9 @@ module ActiveRecord
         execute("SET #{encoding} #{variable_assignments}", :skip_logging)
       end
 
+      def valid_type?(type)
+        !native_database_types[type].nil?
+      end  
     end
   end
 end
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index b1b0467379..129a3e7487 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -820,6 +820,10 @@ module ActiveRecord
         def table_definition
           TableDefinition.new(self)
         end
+
+        def valid_type?(type)
+          !native_database_types[type].nil?
+        end
     end
   end
 end
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
index 11e8197293..8a2e7775d5 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
@@ -599,6 +599,10 @@ module ActiveRecord
           end
         end
 
+        def valid_type?(type)
+          true
+        end
+
     end
   end
 end