jossjoss54 (Joss)

经常看到 Ruby 有不同于其他语言的写法

jossjoss54 — Sat, 15 Nov 2014 23:22:19 +0800

我经常看到有这种写法｜x｜x +1 都搞不懂这种写法的意思因为有｜｜这种符号也查不出啥子意思

为什么新的 captcha gem 都不支援 Redis 或 Memcache 了？

jossjoss54 — Thu, 30 Oct 2014 20:12:52 +0800

最近打算搞个会员机制需要 captcha 搜寻了一些 captcha 1.recaptcha 2.simple-captcha 3.blah blah blah

但这些 gem 都没有支援 memcache 或 redis 等 cache 了这种做法不是对 DB server 相对不好？

bootstrap sass gem 的 precompile 真是无解...

jossjoss54 — Fri, 17 Oct 2014 19:52:11 +0800

当我用这指令时

RAILS_ENV="production" bundle exec rake assets:precompile RAILS_GROUPS=assets

就会出现以下错误：

I, [2014-10-17T19:27:35.964117 #1687]  INFO -- : Writing /home/ubuntu/＊/＊/tmp/build-141354439930527/public/assets/bootstrap-dfdddb4ad2b1dff678f8c9039c7356ce.css
     rake aborted!
     Sass::SyntaxError: Undefined variable: "$alert-padding".

但是运行

RAILS_ENV="production" bundle exec rake assets:precompile

就没问题！这真是诡异，我去翻 3.1.1 的文件 http://www.rubydoc.info/gems/bootstrap-sass/3.1.1.1/frames 也没看到异样，都照他的设定了我的 ruby 2.0.0 及 rails 4.0.2 以下是我的设定档 /javascripts/application.js

//= require jquery
//= require jquery_ujs
//= require bootstrap
//= require ckeditor/override
//= require ckeditor/init
//= require_tree ./common
//= require s3_direct_upload
//= require analytics

/stylesheets/application.css

*
 *= require_self
 *= require s3_direct_upload_progress_bars
 *= require bootstrap
 *= require_tree .
 */

gemfile

GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (4.0.2)
      actionpack (= 4.0.2)
      mail (~> 2.5.4)
    actionpack (4.0.2)
      activesupport (= 4.0.2)
      builder (~> 3.1.0)
      erubis (~> 2.7.0)
      rack (~> 1.5.2)
      rack-test (~> 0.6.2)
    activemodel (4.0.2)
      activesupport (= 4.0.2)
      builder (~> 3.1.0)
    activerecord (4.0.2)
      activemodel (= 4.0.2)
      activerecord-deprecated_finders (~> 1.0.2)
      activesupport (= 4.0.2)
      arel (~> 4.0.0)
    activerecord-deprecated_finders (1.0.3)
    activerecord-session_store (0.1.0)
      actionpack (>= 4.0.0, < 5)
      activerecord (>= 4.0.0, < 5)
      railties (>= 4.0.0, < 5)
    activesupport (4.0.2)
      i18n (~> 0.6, >= 0.6.4)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    annotate (2.5.0)
      rake
    arel (4.0.2)
    autoprefixer-rails (3.1.2.20141016)
      execjs
    aws-sdk (1.56.0)
      aws-sdk-v1 (= 1.56.0)
    aws-sdk-v1 (1.56.0)
      json (~> 1.4)
      nokogiri (>= 1.4.4)
    bcrypt-ruby (3.1.2)
    better_errors (2.0.0)
      coderay (>= 1.0.0)
      erubis (>= 2.6.6)
      rack (>= 0.9.0)
    binding_of_caller (0.7.2)
      debug_inspector (>= 0.0.1)
    bootstrap-sass (3.1.1.1)
      sass (~> 3.2)
    builder (3.1.4)
    callsite (0.0.11)
    ckeditor (4.0.11)
      mime-types
      orm_adapter (~> 0.5.0)
    climate_control (0.0.3)
      activesupport (>= 3.0)
    cocaine (0.5.4)
      climate_control (>= 0.0.3, < 1.0)
    coderay (1.1.0)
    coffee-rails (4.0.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.3.0)
      coffee-script-source
      execjs
    coffee-script-source (1.8.0)
    debug_inspector (0.0.2)
    erubis (2.7.0)
    execjs (2.2.2)
    hike (1.2.3)
    html5shiv-js-rails (3.7.2.1)
      railties (~> 4.0, < 5.0)
    i18n (0.6.11)
    jbuilder (1.5.3)
      activesupport (>= 3.0.0)
      multi_json (>= 1.2.0)
    jquery-fileupload-rails (0.4.1)
      actionpack (>= 3.1)
      railties (>= 3.1)
    jquery-rails (3.1.2)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    json (1.8.1)
    kaminari (0.15.1)
      actionpack (>= 3.0.0)
      activesupport (>= 3.0.0)
    mail (2.5.4)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    meta_request (0.3.4)
      callsite (~> 0.0, >= 0.0.11)
      rack-contrib (~> 1.1)
      railties (>= 3.0.0, < 5.0.0)
    mime-types (1.25.1)
    mina (0.3.0)
      open4
      rake
    mini_portile (0.6.0)
    minitest (4.7.5)
    multi_json (1.10.1)
    mysql2 (0.3.16)
    newrelic_rpm (3.9.5.251)
    nokogiri (1.6.2.1)
      mini_portile (= 0.6.0)
    open4 (1.3.4)
    orm_adapter (0.5.0)
    paperclip (4.1.1)
      activemodel (>= 3.0.0)
      activesupport (>= 3.0.0)
      cocaine (~> 0.5.3)
      mime-types
    polyglot (0.3.5)
    pr_geohash (1.0.0)
    protected_attributes (1.0.7)
      activemodel (>= 4.0.1, < 5.0)
    rack (1.5.2)
    rack-contrib (1.1.0)
      rack (>= 0.9.1)
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (4.0.2)
      actionmailer (= 4.0.2)
      actionpack (= 4.0.2)
      activerecord (= 4.0.2)
      activesupport (= 4.0.2)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.0.2)
      sprockets-rails (~> 2.0.0)
    railties (4.0.2)
      actionpack (= 4.0.2)
      activesupport (= 4.0.2)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.3.2)
    rdoc (4.1.2)
      json (~> 1.4)
    rsolr (1.0.10)
      builder (>= 2.1.2)
    s3_direct_upload (0.1.7)
      coffee-rails (>= 3.1)
      jquery-fileupload-rails (~> 0.4.1)
      rails (>= 3.1)
      sass-rails (>= 3.1)
    sass (3.2.19)
    sass-rails (4.0.3)
      railties (>= 4.0.0, < 5.0)
      sass (~> 3.2.0)
      sprockets (~> 2.8, <= 2.11.0)
      sprockets-rails (~> 2.0)
    sdoc (0.4.1)
      json (~> 1.7, >= 1.7.7)
      rdoc (~> 4.0)
    simple_captcha2 (0.2.2)
      rails (>= 3.1, < 4.1)
    sprockets (2.11.0)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sprockets-rails (2.0.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (~> 2.8)
    sqlite3 (1.3.9)
    sunspot (2.1.1)
      pr_geohash (~> 1.0)
      rsolr (~> 1.0.7)
    sunspot_rails (2.1.1)
      nokogiri
      rails (>= 3)
      sunspot (= 2.1.1)
    sunspot_solr (2.1.1)
    thor (0.19.1)
    thread_safe (0.3.4)
    tilt (1.4.1)
    treetop (1.4.15)
      polyglot
      polyglot (>= 0.3.1)
    turbolinks (2.4.0)
      coffee-rails
    tzinfo (0.3.41)
    uglifier (2.5.3)
      execjs (>= 0.3.0)
      json (>= 1.8.0)

PLATFORMS
  ruby

DEPENDENCIES
  activerecord-session_store
  annotate (= 2.5.0)
  autoprefixer-rails (~> 3.1.2.20141016)
  aws-sdk
  bcrypt-ruby (= 3.1.2)
  better_errors
  binding_of_caller
  bootstrap-sass (~> 3.1.1)
  ckeditor (= 4.0.11)
  coffee-rails (~> 4.0.0)
  html5shiv-js-rails
  jbuilder (~> 1.2)
  jquery-rails
  kaminari (= 0.15.1)
  meta_request
  mina (~> 0.3.0)
  mysql2
  newrelic_rpm
  nokogiri (~> 1.6.2.1)
  paperclip (= 4.1.1)
  protected_attributes (= 1.0.7)
  rails (= 4.0.2)
  s3_direct_upload
  sass-rails (~> 4.0.0)
  sdoc
  simple_captcha2
  sqlite3
  sunspot_rails (= 2.1.1)
  sunspot_solr (= 2.1.1)
  turbolinks
  uglifier (>= 1.3.0)

cap deploy 的 precompile 無法通過！但是在該資料夾 precompile 正常！

jossjoss54 — Wed, 15 Oct 2014 16:06:31 +0800

原本會吃不到 bootstrap，但後來 import 後就好了。

DEBUG[abfcd0b2]     Tasks: TOP => assets:precompile
D, [2014-10-15T15:55:35.554321 #1667] DEBUG -- tcpsocket[3fd75d88fcb0]: received packet nr 1275 type 94 len 76
I, [2014-10-15T15:55:35.554378 #1667]  INFO -- net.ssh.connection.session[3fd75c53a73c]: channel_data: 59 47b
DEBUG[abfcd0b2]     (See full trace by running task with --trace)
D, [2014-10-15T15:55:35.603252 #1667] DEBUG -- tcpsocket[3fd75d88fcb0]: read 36 bytes
D, [2014-10-15T15:55:35.603431 #1667] DEBUG -- tcpsocket[3fd75d88fcb0]: received packet nr 1276 type 96 len 12
I, [2014-10-15T15:55:35.603502 #1667]  INFO -- net.ssh.connection.session[3fd75c53a73c]: channel_eof: 59
D, [2014-10-15T15:55:35.623093 #1667] DEBUG -- tcpsocket[3fd75d88fcb0]: read 104 bytes
D, [2014-10-15T15:55:35.623296 #1667] DEBUG -- tcpsocket[3fd75d88fcb0]: received packet nr 1277 type 98 len 44
I, [2014-10-15T15:55:35.623383 #1667]  INFO -- net.ssh.connection.session[3fd75c53a73c]: channel_request: 59 exit-status false
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing on host *.*.*.*: rake exit status: 1
rake stdout: Nothing written
rake stderr: Nothing written

gem lock

GEM
  remote: http://rubygems.org/
  specs:
    actionmailer (4.0.2)
      actionpack (= 4.0.2)
      mail (~> 2.5.4)
    actionpack (4.0.2)
      activesupport (= 4.0.2)
      builder (~> 3.1.0)
      erubis (~> 2.7.0)
      rack (~> 1.5.2)
      rack-test (~> 0.6.2)
    activemodel (4.0.2)
      activesupport (= 4.0.2)
      builder (~> 3.1.0)
    activerecord (4.0.2)
      activemodel (= 4.0.2)
      activerecord-deprecated_finders (~> 1.0.2)
      activesupport (= 4.0.2)
      arel (~> 4.0.0)
    activerecord-deprecated_finders (1.0.3)
    activerecord-session_store (0.1.0)
      actionpack (>= 4.0.0, < 5)
      activerecord (>= 4.0.0, < 5)
      railties (>= 4.0.0, < 5)
    activesupport (4.0.2)
      i18n (~> 0.6, >= 0.6.4)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    annotate (2.5.0)
      rake
    arel (4.0.2)
    aws-sdk (1.52.0)
      aws-sdk-v1 (= 1.52.0)
    aws-sdk-v1 (1.52.0)
      json (~> 1.4)
      nokogiri (>= 1.4.4)
    bcrypt-ruby (3.1.2)
    bootstrap-sass (3.1.1.1)
      sass (~> 3.2)
    builder (3.1.4)
    capistrano (3.2.1)
      i18n
      rake (>= 10.0.0)
      sshkit (~> 1.3)
    capistrano-bundler (1.1.3)
      capistrano (~> 3.1)
      sshkit (~> 1.2)
    capistrano-ext (1.2.1)
      capistrano (>= 1.0.0)
    capistrano-rails (1.1.2)
      capistrano (~> 3.1)
      capistrano-bundler (~> 1.1)
    capistrano-rvm (0.1.1)
      capistrano (~> 3.0)
      sshkit (~> 1.2)
    ckeditor (4.0.11)
      mime-types
      orm_adapter (~> 0.5.0)
    climate_control (0.0.3)
      activesupport (>= 3.0)
    cocaine (0.5.4)
      climate_control (>= 0.0.3, < 1.0)
    coffee-rails (4.0.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.7.0)
    colorize (0.7.3)
    erubis (2.7.0)
    execjs (2.2.1)
    hike (1.2.3)
    i18n (0.6.9)
    jbuilder (1.5.3)
      activesupport (>= 3.0.0)
      multi_json (>= 1.2.0)
    jquery-fileupload-rails (0.4.1)
      actionpack (>= 3.1)
      railties (>= 3.1)
    jquery-rails (3.1.1)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    json (1.8.1)
    kaminari (0.15.1)
      actionpack (>= 3.0.0)
      activesupport (>= 3.0.0)
    mail (2.5.4)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    mime-types (1.25.1)
    mini_portile (0.6.0)
    minitest (4.7.5)
    multi_json (1.10.1)
    multimap (1.1.3)
    mysql2 (0.3.16)
    net-scp (1.2.1)
      net-ssh (>= 2.6.5)
    net-ssh (2.9.1)
    netrc (0.7.7)
    newrelic_rpm (3.9.4.245)
    nokogiri (1.6.2.1)
      mini_portile (= 0.6.0)
    orm_adapter (0.5.0)
    paperclip (4.1.1)
      activemodel (>= 3.0.0)
      activesupport (>= 3.0.0)
      cocaine (~> 0.5.3)
      mime-types
    polyglot (0.3.5)
    pr_geohash (1.0.0)
    protected_attributes (1.0.7)
      activemodel (>= 4.0.1, < 5.0)
    rack (1.5.2)
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (4.0.2)
      actionmailer (= 4.0.2)
      actionpack (= 4.0.2)
      activerecord (= 4.0.2)
      activesupport (= 4.0.2)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.0.2)
      sprockets-rails (~> 2.0.0)
    railties (4.0.2)
      actionpack (= 4.0.2)
      activesupport (= 4.0.2)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.3.2)
    rdoc (4.1.1)
      json (~> 1.4)
    rest-client (1.7.2)
      mime-types (>= 1.16, < 3.0)
      netrc (~> 0.7)
    rsolr (1.0.10)
      builder (>= 2.1.2)
    s3_direct_upload (0.1.7)
      coffee-rails (>= 3.1)
      jquery-fileupload-rails (~> 0.4.1)
      rails (>= 3.1)
      sass-rails (>= 3.1)
    sass (3.2.19)
    sass-rails (4.0.3)
      railties (>= 4.0.0, < 5.0)
      sass (~> 3.2.0)
      sprockets (~> 2.8, <= 2.11.0)
      sprockets-rails (~> 2.0)
    sdoc (0.4.0)
      json (~> 1.8)
      rdoc (~> 4.0, < 5.0)
    simple_captcha2 (0.2.2)
      rails (>= 3.1, < 4.1)
    sprockets (2.11.0)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sprockets-rails (2.0.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (~> 2.8)
    sqlite3 (1.3.9)
    sshkit (1.5.1)
      colorize
      net-scp (>= 1.1.2)
      net-ssh (>= 2.8.0)
    sunspot (2.1.1)
      pr_geohash (~> 1.0)
      rsolr (~> 1.0.7)
    sunspot_rails (2.1.1)
      nokogiri
      rails (>= 3)
      sunspot (= 2.1.1)
    sunspot_solr (2.1.1)
    thor (0.19.1)
    thread_safe (0.3.4)
    tilt (1.4.1)
    treetop (1.4.15)
      polyglot
      polyglot (>= 0.3.1)
    turbolinks (2.2.2)
      coffee-rails
    tzinfo (0.3.39)
    uglifier (2.5.1)
      execjs (>= 0.3.0)
      json (>= 1.8.0)

PLATFORMS
  ruby

DEPENDENCIES
  activerecord-session_store
  annotate (= 2.5.0)
  aws-sdk
  bcrypt-ruby (= 3.1.2)
  bootstrap-sass (~> 3.1.1)
  capistrano (~> 3.2.1)
  capistrano-ext (~> 1.2.1)
  capistrano-rails (~> 1.1.2)
  capistrano-rvm (~> 0.1.1)
  ckeditor (= 4.0.11)
  coffee-rails (~> 4.0.0)
  jbuilder (~> 1.2)
  jquery-rails
  kaminari (= 0.15.1)
  multimap (~> 1.1.3)
  mysql2
  newrelic_rpm
  paperclip (= 4.1.1)
  protected_attributes (= 1.0.7)
  rails (= 4.0.2)
  rest-client (~> 1.7.2)
  s3_direct_upload
  sass-rails (~> 4.0.0)
  sdoc
  simple_captcha2
  sqlite3
  sunspot_rails (= 2.1.1)
  sunspot_solr (= 2.1.1)
  turbolinks
  uglifier (>= 1.3.0)

cap deploy 一直失敗！

jossjoss54 — Mon, 06 Oct 2014 21:23:14 +0800

我在用 capistrano 3.2.1 一直遭遇 Authentication failed for user，看 debug log 就發現停在這了，如何知道是在哪個階段錯誤了嗎？

D, [2014-10-06T21:13:59.913216 #12980] DEBUG -- net.ssh.authentication.session[3fe6314d7130]: trying none D, [2014-10-06T21:13:59.913372 #12980] DEBUG -- tcpsocket[3fe6325be480]: queueing packet nr 5 type 50 len 44 D, [2014-10-06T21:13:59.913458 #12980] DEBUG -- tcpsocket[3fe6325be480]: sent 68 bytes D, [2014-10-06T21:13:59.991238 #12980] DEBUG -- tcpsocket[3fe6325be480]: read 68 bytes D, [2014-10-06T21:13:59.991620 #12980] DEBUG -- tcpsocket[3fe6325be480]: received packet nr 5 type 51 len 44 D, [2014-10-06T21:13:59.991833 #12980] DEBUG -- net.ssh.authentication.session[3fe6314d7130]: allowed methods: publickey,password D, [2014-10-06T21:13:59.991974 #12980] DEBUG -- net.ssh.authentication.methods.none[3fe6314de7a0]: none failed D, [2014-10-06T21:13:59.992090 #12980] DEBUG -- net.ssh.authentication.session[3fe6314d7130]: trying publickey D, [2014-10-06T21:14:00.016945 #12980] DEBUG -- net.ssh.authentication.agent[3fe6314eb07c]: connecting to ssh-agent D, [2014-10-06T21:14:00.017075 #12980] DEBUG -- net.ssh.authentication.agent[3fe6314eb07c]: sending agent request 1 len 51 D, [2014-10-06T21:14:00.017154 #12980] DEBUG -- net.ssh.authentication.agent[3fe6314eb07c]: received agent packet 2 len 5 D, [2014-10-06T21:14:00.017185 #12980] DEBUG -- net.ssh.authentication.agent[3fe6314eb07c]: sending agent request 11 len 0 D, [2014-10-06T21:14:00.017231 #12980] DEBUG -- net.ssh.authentication.agent[3fe6314eb07c]: received agent packet 12 len 5 D, [2014-10-06T21:14:00.017260 #12980] DEBUG -- net.ssh.authentication.session[3fe6314d7130]: trying password E, [2014-10-06T21:14:00.017302 #12980] ERROR -- net.ssh.authentication.session[3fe6314d7130]: all authorization methods failed (tried none, publickey, password)

修改 database.yml 新 ip 以后，rails 仍连回舊的设定 ip

jossjoss54 — Tue, 30 Sep 2014 11:19:49 +0800

我将 database.yml 从 localhost 修改到另一个内网 ip 但是即便我 apache restart asset clobber asset precompile 都无法成功换到另一个 db

这是跟 chef 或 apache 的 config 有关吗？

在 migrate 时候很容易遇到 table already exist

jossjoss54 — Fri, 26 Sep 2014 14:11:20 +0800

每次在 migrate 的时候很容易遇到 table already exist 知道删除该张 table 就可以解决有没有办法判断所有的栏位是否相同，若相同则不更新，不同则更新？或是大家都怎么处理？要用人工判断挺麻烦的！

有没有法子让 merge 时，强制指定某些档案 conflict？

jossjoss54 — Fri, 12 Sep 2014 10:42:00 +0800

最近想利用注解的方式强制 git merge 的时候产生 conflict 但很不方便，似乎也很难办到不知道可行吗？有其他方式吗？

如何大量设置中断点？

jossjoss54 — Thu, 11 Sep 2014 12:11:24 +0800

最近要承接前面程序员的程序码都没有文件想直接大量设置中断点来了解譬如用 shift 就可选取大量中断点之类的不过 chrome 似乎不支援这些功能，有哪些支援的吗？

在写入档案时，是怎么运作的？

jossjoss54 — Mon, 01 Sep 2014 15:07:55 +0800

我看到写入档案的方式如下

open('myfile.out', 'w') { |f|
  f.puts "Hello, world."
}

但是不知道 open('myfile.out', 'w') { |f| f.puts 这一段的意思？是如何运作的？

false precompile 的 app 里常被 exec.js 占用超過 75% 的 cpu

jossjoss54 — Fri, 29 Aug 2014 15:31:06 +0800

在更新 precompile 的 app 後只要有人連入網頁就會被 tmp/exec.js 占了五個 process 而各占 15%cpu 请教这是什么原因？

关于 stylesheet_link_tag 及 javascript_include_tag 在雲服務

jossjoss54 — Fri, 29 Aug 2014 02:29:00 +0800

请教各位我想把 public 里面的资料全部放在另外的地点，例如 S3 或其他地点但是我把 precompile 以后的静态资料上传后原本写在 stylesheet_link_tag 及 javascript_include_tag 里面只要不是 application.js 或 application.css 的全部无法 get 大家有什么解法吗？