tagged_logging_context

🏷️ Advanced Tagged Logging

Leverage ActiveSupport::TaggedLogging to inject dynamic context (such as user IDs, subdomain, or custom headers) into each log line. Wrap your controller stack to automatically tag all log entries without manually passing parameters.

# app/middleware/log_tags_middleware.rb
class LogTagsMiddleware
  def initialize(app)
    @app = app
  end

  def call(env)
    request = ActionDispatch::Request.new(env)
    Rails.logger.tagged("User:#{request.session[:user_id]}", "Host:#{request.host}") do
      @app.call(env)
    end
  end
end

# config/application.rb
config.middleware.insert_before Rails::Rack::Logger, LogTagsMiddleware