tagged_logging

🏷️ Tag Requests with TaggedLogging

TaggedLogging lets you add contextual tags (like request IDs or user IDs) to your logs, making it easier to filter and trace. By wrapping your Rails.logger in ActiveSupport::TaggedLogging, each log line will include the tags you set.

You can add tags in a controller or middleware:

# config/application.rb
config.log_tags = [ :request_id, ->(req) { "User:#{req.session[:user_id]}" } ]

# or manually in a controller
class ApplicationController < ActionController::Base
  around_action :add_log_tags

  private

  def add_log_tags(&block)
    Rails.logger.tagged("Session:", session.id) { block.call }
  end
end

Now each log entry will look like:

[Session:] [d3f2e1b4] Started GET "/" for 127.0.0.1