rails/rails — pull request #13963 by lucas-clemente (2014-02-06 22:06:04+00:00)
Title: Skip migration check if adapter doesn't support it

For adapters that don't support migration all requests fail since `Migration::CheckPending` errors.

I realize that setting `config.active_record.migration_error` to something other than `:page_load` is a valid workaround, but I don't see the point in checking for migrations if the adapter explicitly says they're not supported.