Rails 3.1 为我们带来了 Asset Pipeline，同时也带来了烦人的 asset log 在 Rails 控制台里面，尤其是项目大，JS,CSS 小文件多的情况，都没法认真的关注查询 log 了...
Started GET "/topics" for 127.0.0.1 at 2011-11-21 15:15:29 +0800
Processing by TopicsController#index as HTML
MONGODB ruby_china['topics'].find({}).sort([[:_id, :desc]])
Rendered topics/_base.html.erb (1.1ms)
Rendered topics/index.html.erb within layouts/application (30.9ms)
Completed 200 OK in 58ms (Views: 53.9ms)
Served asset /bootstrap.css - 304 Not Modified (0ms)
Served asset /application.css - 304 Not Modified (1ms)
Served asset /front.css - 304 Not Modified (0ms)
Served asset /jquery.jdialog.css - 304 Not Modified (0ms)
Served asset /jquery.js - 304 Not Modified (0ms)
Served asset /jquery_ujs.js - 304 Not Modified (0ms)
Served asset /jquery.jdialog.js - 304 Not Modified (0ms)
Served asset /jquery.tipsy.js - 304 Not Modified (0ms)
Served asset /will_paginate.js - 304 Not Modified (0ms)
Served asset /bootstrap-tabs.js - 304 Not Modified (0ms)
Served asset /application.js - 304 Not Modified (0ms)
Served asset /logo_big.png - 304 Not Modified (10ms)
赶紧禁用它吧！
config/environments/development.rb 里面加入
YouApp::Application.configure do
...
# 加入这个
config.after_initialize do |app|
app.assets.logger = Logger.new('/dev/null')
end
end
Rails::Rack::Logger.class_eval do
def before_dispatch_with_quiet_assets(env)
before_dispatch_without_quiet_assets(env) unless env['PATH_INFO'].index("/assets/") == 0
end
alias_method_chain :before_dispatch, :quiet_assets
end
从此世界清净了！
关于这个，Rails Issue 里面又很多人在说了： https://github.com/rails/rails/issues/2639
Less clever, but maybe nice to know you can also use grep
tail -f log/development.log|grep --context=3 some_string_you_want
or
tail -f log/development.log|grep -v some_string_you_dont_want_to_see
for more info, check this screencast on grep
#15 楼 @happypeter --context=3 只能显示附近的 3 行，有没有办法自动确定 context 长度吗？
tail -f log/development.log | grep -vE "(^\s*$|asset)"
能隐藏 asset，如果能在每个 request 后面显示一个空行就完美了。
如果是开发环境，我觉得这个更方便
rails s | grep -vE "(^\s*$|asset)"
有没有办法自动确定 context 长度吗？ I think you can if you make your boundaries clear with regexp, don't know how.
If we really want tight control, write a formater maybe
rails s|my_formater.rb
So all I can give here is hollow guesses, but I've found this helpful: http://railscasts.com/episodes/56-the-logger-revised
Rails.application.assets.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'].index("/assets/") == 0 call_without_quiet_assets(env).tap do Rails.logger.level = previous_level end end alias_method_chain :call, :quiet_assets end
里面说3.2是这个代码
tail -n0 -f $RAILS_ROOT/log/development.log | sed -e '{/^$/N;/^\n$/D};{/Started GET "\/assets\//d}'
去除了 assets 提示，同时，将多个连续的空白行换成了一行，让输出更紧凑。
话说 7 个月前已经 close 了，为啥 3.2.13 还不好用呢？