How to disable logging of asset pipeline (sprockets) messages in Rails 3.1?
Sprockets tends to be quite verbose in the (dev) log by default under Rails 3.1 (RC1):
Started GET "/assets/application.css" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
Compiled app/assets/stylesheets/application.css.scss (5ms) (pid 6303)
Started GET "/assets/application.js" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
Compiled app/assets/stylesheets/default.css.scss (15ms) (pid 6303)
...
Started GET "/assets/default/header_bg.gif" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
Served asset /default/header_logo.gif - 304 Not Modified (7ms) (pid 6303)
Served asset /default/header_bg.gif - 304 Not Modified (0ms) (pid 6246)
Served asset /default/footer_bg.gif - 304 Not Modified (49ms) (pid 6236)
...
I'd like to either reduce the level of verbosity or disable it altogether. I'm assuming there is a clean way to disable or reduce the verbosity of the logging by adding a config line in either environment.rb or development.rb similar to config.active_record.logger = nil which silences ActiveRecord SQL statements.
Place the following code in config/initializers/quiet_assets.rb
if Rails.env.development?
Rails.application.assets.try(:logger=, Logger.new('/dev/null'))
Rails::Rack::Logger.class_eval do
def call_with_quiet_assets(env)
previous_level = Rails.logger.level
Rails.logger.level = Logger::ERROR if env['PATH_INFO'] =~ %r{^/assets/}
call_without_quiet_assets(env)
ensure
Rails.logger.level = previous_level
end
alias_method_chain :call, :quiet_assets
end
end
Updated: now works for Rails 3.2 too (previous attempt fixes before_dispatch now we're going for the root rack call instead)
Update: A proper Rack middleware solution (instead of fragile alias_method_chain ) from @macournoyer https://github.com/rails/rails/issues/2639#issuecomment-6591735
Take a look at https://github.com/evrone/quiet_assets and just include it into your Gemfile
For lazy: gem 'quiet_assets', group: :development
For Rails 3.2, add config.assets.logger = false to your development environment configuration file, typically found at config/environments/development.rb . See #4512
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