# Pretty prints an ActiveRecord object.

# Using a larger maxdepth means that you might potentially be looking
# through a *lot* of objects.

module ActiveRecordPrettyPrint

  def pprint(ar, maxdepth=1)
    pp_helper(ar, "", 0, [], maxdepth - 1)
  end

  private
  def pp_helper(ar, buf, level, seen, maxdepth)
    if level > maxdepth || seen.member?(ar)
      buf << ("	" * level) + "#{ar}\n"
      return buf
    end

    seen << ar

    reflections = ar.class.reflections
    rcolumns = reflections.collect { |k, v| v.primary_key_name }

    buf << "#{ar.class}:\n"
    ar.attributes.keys.reject { |k| rcolumns.member? k }.each do |k|
      buf << ("	" * level) + "#{k}	=>	" + ar.send(k).to_s + "\n"
    end

    reflections.keys.each do |k|

      buf << ("	" * level) + k.to_s + "	=>	"
      res = ar.send(k)
      if res.nil?
        buf << "[nil]\n"
      elsif res.class == Array
        res.each do |o|
          pp_helper(o, buf, level + 1, seen, maxdepth)
        end
      else
        pp_helper(res, buf, level + 1, seen, maxdepth)
        buf << "\n"
      end
    end

    return buf
  end

end