Override logger for large binary data

I've searched high and low and played around and couldn't figure out
how to override what the logger prints for a specific model (one that
has many columns of multi-100K blobs).

I 'tail -f log/development.log' in a shell within emacs and it really
doesn't like the huge lines dumped out during saves/updates.

So, I finally figured out that if I put the following in my
config/environment.rb I can trim the binary data dumps:

class Logger
  private
  alias old_format_message format_message

  def format_message(severity, timestamp, progname, msg)
    # uses a non-greedy match
    msg.to_str.gsub!(/= x'(.*?)'(,|\s)/,'= x\'BINARY_DATA\'\2')
    "#{msg}\n"
  end
end

But, I know that this is a kluge so any advice on how to control the
dump on column level within the model or even on the model level will
be much appreciated.

Thanks much.