automation

clear dev log

# config/initializers/clear_logs.rb
if Rails.env.development?
  MAX_LOG_SIZE = 10.megabytes

  logs = [ File.join(Rails.root, 'log', 'development.log'), File.join(Rails.root, 'log', 'test.log') ]

  logs.each do |log|
    if File.size?(log).to_i > MAX_LOG_SIZE
      $stdout.puts "Removing Log: #{log}"
      `rm #{log}`
    end
  end
end

logger级别
debug, info, warn, error, and fatal.
默认情况下：开发和测试环境下日志级别为所有（>=debug），生产环境级别为>=info