You can add initializer pretty_assets.rb with:
def is_windows? RUBY_PLATFORM['mswin32'] || RUBY_PLATFORM['mingw'] || RUBY_PLATFORM['cygwin'] end destination = is_windows?? 'NUL' : '/dev/null' Rails.application.assets.logger = Logger.new(destination) 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'].index("/assets/") == 0 call_without_quiet_assets(env).tap do Rails.logger.level = previous_level end end alias_method_chain :call, :quiet_assets end
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