Redirect logger output for a specific controller in Rails 4

Question

I\'ve built a solution based on the answer in my previous question Redirect logger output for a specific controller in Rails 3 for Rails 3. It works great however now I am tryin

Answer 1

After hacking around the Rails code for a day, I think I have found a hack-ish solution to your problem.

You need to edit the call method and initialize method as follow:

def initialize(app)
  @app = app
  @logger = Rails.instance_variable_get(:@logger)
  @reports_api_controller_logger = Logger.new(
      Rails.root.join('log', REPORTS_API_CONTROLLER_LOGFILE),
      10, 1000000)
end

def call(env)
  if env['PATH_INFO'] =~ /api\/v.*\/reports.*/
    Rails.instance_variable_set(:@logger, @reports_api_controller_logger)
    ActionController::Base.logger = @reports_api_controller_logger
    ActiveRecord::Base.logger = @reports_api_controller_logger
    ActionView::Base.logger = @reports_api_controller_logger
  else
    Rails.instance_variable_set(:@logger, @logger)
    ActionController::Base.logger = @logger
    ActiveRecord::Base.logger = @logger
    ActionView::Base.logger = @logger
  end
  @app.call(env)
end

This is really a hack-ish solution and modify the regex according to your needs.

Tell me if this doesn't work for you.