autumnwolf (小浪鼓)

设置 auth 之后，数据丢失

autumnwolf — Mon, 08 Apr 2019 11:40:46 +0800

之前 mongo 没有开启 auth，现在想打开。但是开启后数据都丢失了。

最开始的 docker-compose.yml

mongo:
    image: mongo
    volumes:
      - ./data:/data/db
    ports:
    - "27017:27017"

加上了数据户的账户和密码

mongo:
    image: mongo
    volumes:
      - ./data:/data/db
    ports:
    - "27017:27017"
    environment:
      MONGO_INITDB_ROOT_USERNAME: admin
      MONGO_INITDB_ROOT_PASSWORD: password

然后 docker-compose up, 发现并没用添加这个用户，因为我的数据库已经存在了，所以继续加上创建用户名和密码的部分

mongo:
    image: mongo
    volumes:
      - ./data:/data/db
    ports:
    - "27017:27017"
    environment:
      MONGO_INITDB_ROOT_USERNAME: admin
      MONGO_INITDB_ROOT_PASSWORD: password
    volumes:
      - ./mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro

添加一个新的文件 mongo-init.js

use admin
db.createUser(
  {
    user: "admin",
    pwd: "passw0rd",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" }, "readWriteAnyDatabase" ]
  }
)

就这样 auth 打开了，但是之前的数据库没有了。

有一个警告

WARNING: Service "mongo" is using volume "/data/db" from the previous container. Host mapping "/home/xxx/deploy/data" has no Recreating deploy_mongo_1 ...

PS:

在我的 mongo-init.js，应该是一直写的 `pwd: "passwr0rd", docker-compose.yml 里面是“password". 但是现在数据库用 docker-compose 里面的密码可以连上。
我的数据应该是 mount 到了工程目录下的 data 目录，也就是- ./data:/data/db. 这个目录从来没有动过，是不是 docker-compose up 会覆盖这个目录导致我数据丢失。还是其他的原因。

不知道是否能找回我的数据，望高人指点，谢谢了！

Devise 注册用户 RecordNotUnique 错误

autumnwolf — Tue, 30 Aug 2016 18:43:33 +0800

我在用 Devise 注册一个用户：

curl -v -H "Accept: application/json" -H "Content-type: application/json" -X POST -d ' {"user":{"first_name":"firstname","last_name":"lastname","email":"zheng2@gmail.com","password":"app123","password_confirmation":"app123","provider":"email"}}'  http://localhost:3000/users

得到错误：

"status":500,"error":"Internal Server Error","exception":"#\u003cActiveRecord::RecordNotUnique: Mysql2::Error: Duplicate entry 'email' for key 'index_users_on_uid_and_provider': INSERT INTO `users` (`encrypted_password`, `email`, `created_at`, `updated_at`, `authentication_token`)

这个错误我目前理解像是 index_users_on_uid_and_provider 字段被设置了 email 的值，然后 email 数据库中已经有 email 这个值了。但是及时数据库中没有数据也是这个错误。求大神指点下！

EDIT: 删除了

.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree
    t.index ["uid", "provider"], name: "index_users_on_uid_and_provider", unique: true, using: :btree

不过目前遇到错误：

{"status":406,"error":"Not Acceptable","exception":"#\u003cActionController::UnknownFormat: ActionController::UnknownFormat\u003e","traces":{"Application Trace":[],"Framework Trace":[{"id":0,"trace":"responders (2.3.0) lib/action_controller/respond_with.rb:207:in `respond_with'"},{"id":1,"trace":"devise (4.2.0) app/controllers/devise/registrations_controller.rb:32:in `create'"},{"id"

schema.rb

create_table "users", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
    t.string   "provider",                             default: "email", null: false
    t.string   "uid",                                  default: "",      null: false
    t.string   "encrypted_password",                   default: "",      null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",                        default: 0,       null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.string   "confirmation_token"
    t.datetime "confirmed_at"
    t.datetime "confirmation_sent_at"
    t.string   "unconfirmed_email"
    t.string   "name"
    t.string   "nickname"
    t.string   "image"
    t.string   "email"
    t.text     "tokens",                 limit: 65535
    t.datetime "created_at",                                             null: false
    t.datetime "updated_at",                                             null: false
    t.string   "authentication_token",   limit: 30
    t.index ["authentication_token"], name: "index_users_on_authentication_token", unique: true, using: :btree
    t.index ["email"], name: "index_users_on_email", using: :btree

~~t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :tree~~ ~~t.index ["uid", "provider"], name: "index_users_on_uid_and_provider", unique: true, using: :tree~~

end

CoffeeScript 不能被正常调用

autumnwolf — Thu, 11 Aug 2016 16:30:18 +0800

我有一个home_controller index action. 并且是首页 root 'home#index'.

index 这个首页上有个按钮，当点击的时候调用 js 代码（coffee）里面的代码来弹窗。

但是直接打开 localhost 时候没有反应，点击下菜单的 Home 时候再次点击这个按钮 coffee 代码被正常调用。不知道原因求高手指点。

菜单 application.html.erb

<nav>
<li><%= link_to "Home", "/"%></li>
</nav>

index.html.erb

<button id="myBtn">Open Modal</button>
<div id="myModal" class="modal">
  <div class="modal-content">
    <span class="close">×</span>
    <p>Some text in the Modal..</p>
  </div>
</div>
<%= render :partial => 'stories/stories' %>

home.coffee

modal = document.getElementById('myModal');
btn = document.getElementById("myBtn");
span = document.getElementsByClassName("close")[0];
btn.onclick = ->
    modal.style.display = "block"
span.onclick = ->
    modal.style.display = "none"
window.onclick = (event) ->
    modal.style.display = "none" if event.target == modal

部署的时候 bundle install 能否只有添加新的 gem 才执行

autumnwolf — Wed, 10 Aug 2016 17:13:30 +0800

每次部署的时候都执行 bundle install 的话感觉很慢也好像没那么必要，所以能不能判断如果添加了新的 gem 才执行 bundle install？

如果可以怎么写这个 task？

deploy.rb

after :finishing, :bundle do
    on roles :all do
      within current_path do
        info "Current is: #{current_path}"
        execute "cd #{current_path}; bundle install --deployment --without development test"
        execute "cd #{current_path}; bundle exec rake assets:precompile RAILS_ENV=#{fetch(:stage)}"
        execute "cd #{current_path}; bundle exec rake db:migrate RAILS_ENV=#{fetch(:stage)}"
        execute "cd #{current_path}; passenger-config restart-app $(pwd)"
      end 
    end
  end

LoadError: cannot load such file — phusion_passenger/rack_handler

autumnwolf — Fri, 05 Aug 2016 13:30:45 +0800

我在 staging server 上rake db:create 结果：

rake aborted!
LoadError: cannot load such file -- phusion_passenger/rack_handler
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `require'
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `block (2 levels) in require'
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `each'
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `block in require'
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `each'
/usr/local/rvm/gems/ruby-2.3.1/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `require'

这是我的 Gemfile：

group :development, :test do
  # https://github.com/deivid-rodriguez/byebug
  gem 'byebug'
  gem "capistrano", "~> 3.4"
  gem "passenger", ">= 5.0.25", require: "phusion_passenger/rack_handler"
end

我只是在本地开发用 passenger 做 server 来着。虽然我服务器端也用的 passenger，但是应该和这个无关吧。求大牛指点！

EDIT：1. staging server 是 staging 环境 2. 运行rake db:create之前运行｀ bundle install --deployment --without development test｀

解决办法：默认不加 Rails_env 就是对 develop 和 test 生成数据库，加上 staging 就可以了。

浏览器访问本机 IP 的 Rails 服务不好用

autumnwolf — Fri, 04 Dec 2015 16:26:25 +0800

新建 Rails 工程，用浏览器访问 http://127.0.0.1:3000 工作，但是改成我本机的 ip http://192.168.0.59:3000 就链接不到 192.168.0.59 是我电脑的 ip 我记得以前是做过的，然后用手机就可以直接访问在一个网段的电脑。求助

FactoryGril 生成 model 数量不对

autumnwolf — Mon, 14 Sep 2015 18:21:53 +0800

我用 FactoryGril 生成 2 个 User 然后每个有 3 个 event

let (:user) {FactoryGirl.create :user,:with_events}
    let (:user1) {FactoryGirl.create :user,:with_events}

但是测试生成的 events 数量的时候应该生成 6 个却是 3 个

Failure/Error: expect(json["events"].count).to eq 6

       expected: 6
            got: 3

       (compared using ==)

Factories.rb

FactoryGirl.define do |f|

  factory :user do
    password      "123123"
    sequence(:name){|n| "张三#{n}" }
  end

  factory :event do 
    end_date      "2015-05-30"
    is_countdown  "1"
  end


  trait :with_events do
    after :create do |user|
      FactoryGirl.create_list :event, 3, :user => user
    end
  end
end

谢啦！

Rails MySQL 添加 ‘utf8mb4' 字符集错误

autumnwolf — Thu, 05 Mar 2015 09:55:03 +0800

CentOS 6.5，当运行

rake db:create RACK_ENV=production

错误： Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file rake db:create Can't initialize character set utf8mb4

数据库配置文件

ActiveRecord::Base.configurations[:production] = {
  :adapter   => 'mysql2',
  :encoding  => 'utf8mb4',
  ...

my.conf

[client]
default-character-set = utf8mb4

[mysql]
default-character-set = utf8mb4

[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_general_ci

mysql> SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%';
+--------------------------+--------------------+
| Variable_name            | Value              |
+--------------------------+--------------------+
| character_set_client     | utf8mb4            |
| character_set_connection | utf8mb4            |
| character_set_database   | utf8mb4            |
| character_set_filesystem | binary             |
| character_set_results    | utf8mb4            |
| character_set_server     | utf8mb4            |
| character_set_system     | utf8               |
| collation_connection     | utf8mb4_general_ci |
| collation_database       | utf8mb4_general_ci |
| collation_server         | utf8mb4_general_ci |
+--------------------------+--------------------+
10 rows in set (0.00 sec)

mysql>

Mysql version:

Server version: 5.6.23 MySQL Community Server (GPL)

求帮助，谢谢－－－－－－－－－－－－－－－折腾了一整天最终我把 :adapter => 'mysql2', 改成 :adapter => 'mysql' 就可以了，请问他们什么区别？

Jbuilder 在服务器上总是 template is missing

autumnwolf — Tue, 23 Dec 2014 17:34:44 +0800

折腾了好久，还是没能解决这个问题，服务器上运行的是 staging 环境，本地通过 rails s -e production/staging/development 都是可以正确返回 json 数据：错误如下：

Template is missing

Missing template instigates/index, application/index with {:locale=>[:en], :formats=>[:json], :handlers=>[:erb, :builder, :arb, :jbuilder, :rabl]}. Searched in: * "/home/yzhang/instigatestaging/instigateweb/app/views" * "/home/yzhang/.rvm/gems/ruby-2.1.5/gems/activeadmin-0.6.3/app/views" * "/home/yzhang/.rvm/gems/ruby-2.1.5/gems/kaminari-0.16.1/app/views" * "/home/yzhang/.rvm/gems/ruby-2.1.5/gems/devise-3.4.1/app/views"

这里的方法也不好用 http://stackoverflow.com/questions/10520269/rails3-actionview-template-handlers-doesnt-work-on-production-server/13742784#13742784

Gemfile

source 'http://rubygems.org'
gem 'rails', '3.2.13'
gem 'rake','10.0.0'

group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

group :development, :test do
  gem "factory_girl_rails", "~> 4.0"
  #gem "sqlite3"
  gem "shotgun"
end

group :test do
  gem 'mocha', :require => false
  gem 'rack-test'
  gem 'vcr'
  gem 'webmock'
end

gem 'jquery-rails'

gem 'mysql2'

# group :production do
#   gem 'mysql2'
# end

# Use unicorn as the app server
gem 'unicorn'

# Deploy with Capistrano
gem 'capistrano', '2.15.4'

gem 'rails-i18n'

gem 'simple_form'
gem 'country-select'

# gem "urbanairship"
# gem 'auto_migrations' #,:git => "https://github.com/subicura/auto_migrations.git"
# =======
gem "urbanairship", "~> 2.3.3"
gem 'auto_migrations' ,:git => "https://github.com/subicura/auto_migrations.git"
gem "formtastic" # ,:git => "https://github.com/justinfrench/formtastic.git"
gem 'activeadmin',  "~>0.6.2"
gem "meta_search",    '>= 1.1.0.pre'
gem 'devise'
gem "paperclip", "~> 3.5.3"
gem 'koala'
gem "rest-client"
gem 'delayed_job_active_record'
gem 'daemons'
gem 'rocket_pants', '~> 1.0'
gem "chronic"
#gem "active_model_serializers"
gem "multi_json"

gem 'rvm-capistrano'
gem 'rabl'
gem 'jbuilder', '2.2.6'

rocket_plant 如何正确返回 has_many 的 json 类型属性

autumnwolf — Mon, 22 Dec 2014 15:20:30 +0800

如题，show 返回 json 数据： Place Model

has_many :invitees
has_many :address

PlacesViewController

def show
    place = Place.find_by_id(params[:id])
    expose place
 end

Roecet_plants 用 expose 返回所有 place 的属性，我现在要对其进行筛选，如下在 model 的

serializable_hash

方法里面。可是不能正确返回 has_many 的数据，如下，只返回 has_many: address，并切包含所有 Address 的属性，不返回 has_many :invitees 请问如何返回所有 has_many，包括 address 和 invitees

def serializable_hash(options={})
   super only:[:id,:name],
   include:[address:{only:[:id]},invitees:{only: [:id]},]
 end

TextMate 这个是怎么出来的？

autumnwolf — Wed, 26 Nov 2014 22:34:56 +0800

数组取出子元素问题

autumnwolf — Fri, 21 Nov 2014 15:59:51 +0800

为什么 3,4 时候返回时空数组，5 就返回了 nil？

   array = [:peanut, :butter, :and, :jelly]
 => [:peanut, :butter, :and, :jelly] 
2.1.2 :055 > array[3,0]
 => [] 
2.1.2 :056 > array[4,0]
 => [] 
2.1.2 :057 > array[5,0]
 => nil 
2.1.2 :058 >

部署的时候出现 “Don't know how to build task 'assets:precompile'”

autumnwolf — Wed, 19 Nov 2014 21:29:31 +0800

研究了下应该是某个 Gem 导致的这个错误！

bundle exec rake assets:precompile RAILS_ENV=production
RSpec is not part of this bundle, skip specs.
rake aborted!
Don't know how to build task 'assets:precompile'

Gemfile

source 'https://ruby.taobao.org/'
# source 'http://rubygems.org/'

# Distribute your app as a gem
# gemspec

# Server requirements
# gem 'thin' # or mongrel
# gem 'trinidad', :platform => 'jruby'
group :production do
  gem 'unicorn'
end

# Optional JSON codec (faster performance)
# gem 'oj'

# Project requirements
gem 'rake'

# gem 'slim'
gem 'activerecord', '>= 3.1', :require => 'active_record'
# gem 'mysql2'
gem 'mysql2', git: 'https://github.com/brianmario/mysql2.git'

gem 'redis'
gem 'hiredis'
gem 'redis-activesupport'
gem 'second_level_cache', '~>2.1.0.rc2'
gem 'qiniu'
gem 'resque'
gem 'resque-pool', git: 'https://github.com/nevans/resque-pool.git'

# Test requirements
group :test do
  gem 'mocha', :require => false
  gem 'rspec'
  gem 'rack-test', :require => 'rack/test'
end


gem 'sinatra'
gem 'sinatra-contrib'

gem 'multi_json'
gem 'jbuilder', '~> 2.0'
gem 'tilt-jbuilder', :require => "sinatra/jbuilder"
gem 'sinatra-param'

gem 'bcrypt', '~> 3.1.7'


group :development, :test do
  # gem 'jasmine', "~> 1.3.1"
  # profiler
  # gem 'ruby-prof'
  gem 'byebug'
  gem 'annotate', '>= 2.6.0'
  gem 'capistrano',  '~> 3.2.0'
  gem 'capistrano-rails', '~> 1.1.1'
  gem 'capistrano-bundler', '~> 1.1.2'
  gem 'capistrano-rbenv', '~> 2.0.2'
end

SSH 不能无密码登录

autumnwolf — Wed, 08 Oct 2014 14:33:09 +0800

如题：我的步骤

1.生成 key

ssh-keygen -C

2.将 key 复制到了服务器的~/.ssh 目录下的 authorized_keys 文件里面

但是再次

ssh will@domain.com

还是需要密码。will 是 super 用户，authorized_keys 文件的权限 751.

不知道是什么原因？

Rails 4 localhost:3000 这个页面是从哪里来的？

autumnwolf — Sun, 05 Oct 2014 11:18:55 +0800

http://guides.rubyonrails.org/v4.0.8/images/getting_started/rails_welcome.png Rails < 4 在 public 目录下会有这个页面，rails 4 这个页面是从哪里来的呢？

Mailer 接收不到邮件

autumnwolf — Mon, 12 May 2014 09:23:10 +0800

Sent mail to william.hqs@gmail.com (4079.1ms)
Date: Mon, 12 May 2014 09:18:25 +0800
From: huqius@gmail.com
To: william.hqs@gmail.com
Message-ID: <5370216129765_37673fde1b883a0414227@Williams-MacBook-Pro.local.mail>
Subject: =?UTF-8?Q?=E5=A4=A9=E5=A4=A9=E5=9C=88=E5=BB=BA=E8=AE=AE?=
Mime-Version: 1.0
Content-Type: text/plain;
 charset=UTF-8
Content-Transfer-Encoding: 7bit


<p>You have received the following email from test name (william.hqs@gmail.com):</p>
<p>This is test email!</p>

  Rendered home/send_mail.html.erb within layouts/application (0.1ms)
  Rendered layouts/_nav.html.erb (0.1ms)
  Rendered layouts/_footer.html.erb (0.1ms)
Completed 200 OK in 4117ms (Views: 18.2ms | ActiveRecord: 0.0ms)

上面 console 的 log 应该是发送成功了但是 Gmail 账户里没有接收到邮件！

development.rb

onfig.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
    :address              => "smtp.gmail.com",
    :port                 => 587,
    :domain               => 'localhost:3000',
    :user_name            => 'huqius',
    :password             => 'huqiuspassword',
    :authentication       => 'plain',
    :enable_starttls_auto => true  }
  #config.action_mailer.delivery_method = :sendmail
  # Defaults to:
  # config.action_mailer.sendmail_settings = {
  #   :location => '/usr/sbin/sendmail',
  #   :arguments => '-i -t'
  # }
  config.action_mailer.perform_deliveries = true
  config.action_mailer.raise_delivery_errors = true

Mailer.rb

class Mailer < ActionMailer::Base
  #default from: "from@example.com"
  default from:"huqius@gmail.com"
  def contact_email(name,email,body)
    @name = name
    @email = email
    @body = body
    mail to: "william.hqs@gmail.com", subject: '测试邮件'
    #mail :to => user, :from => "william.hqs@gmail.com", :subject => "关心用户"
  end
end

div 如何写成 content_tag

autumnwolf — Thu, 24 Apr 2014 09:47:44 +0800

上面的 div 如何写成 content－tag？如果像下面的话，如果加入 style 和 id 呢？ ```erb <%= content_tag :div, class: "strong" do -%> Hello world! <% end -%> # => Hello world!

http://apidock.com/rails/ActionView/Helpers/TagHelper/content_tag

POST 把参数 id 当成 format

autumnwolf — Wed, 09 Apr 2014 17:37:22 +0800

view：

<%= button_to t('home.add_to_cart'), line_items_path(product)%>

这样点击按钮的时候直接 http://localhost:3000/line_items.4 把 product 的 id 变成了 format.

求原因！ PS：

 Prefix Verb                 URI Pattern                               Controller#Action
line_items GET           /line_items(.:format)                  line_items#index
           POST              /line_items(.:format)                   line_items#create
new_line_item GET    /line_items/new(.:format)           line_items#new
edit_line_item GET     /line_items/:id/edit(.:format)      line_items#edit
line_item GET             /line_items/:id(.:format)             line_items#show

Log：

 params {\"authenticity_token\"=>\"6q3Btd5+k83cNUOjW75NRLQFa5daONl/gb14xpMB5Fs=\", \"action\"=>\"create\", \"controller\"=>\"line_items\", \"format\"=>\"4\"}"
Completed 406 Not Acceptable in 69ms

ActionController::UnknownFormat (ActionController::UnknownFormat):
  app/controllers/line_items_controller.rb:9:in `create'

Paperclip 在本地上传没有问题，在服务器上出现错误

autumnwolf — Wed, 26 Mar 2014 16:09:40 +0800

如题，

ActionController::RoutingError (No route matches [GET] "/photos/small/missing.png"):
  actionpack (4.0.2) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (4.0.2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.0.2) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.0.2) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `block in tagged'
  activesupport (4.0.2) lib/active_support/tagged_logging.rb:25:in `tagged'
  activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `tagged'
  railties (4.0.2) lib/rails/rack/logger.rb:20:in `call'
  actionpack (4.0.2) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.0.2) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  rack (1.5.2) lib/rack/sendfile.rb:112:in `call'

Picture.rb

class Picture < ActiveRecord::Base
  belongs_to :product

  has_attached_file :photo, :styles => { :small => "200x200>", :large => "400x400" },    
  :url => "/assets/products/:id/:style/:basename.:extension",    
  :path => ":rails_root/public/assets/products/:id/:style/:basename.:extension"

  validates_attachment_presence :photo    
  validates_attachment_size :photo, :less_than => 5.megabytes    
  validates_attachment_content_type :photo, :content_type => ['image/jpeg', 'image/png'] 
end

这个错误是找不到 missing.png，但是我没有设定 default_url，应该是没有上传文件的时候有调用这个文件吧？什么情况下出现的这个错误呢？谢谢。

i18n 国际化问题

autumnwolf — Wed, 19 Mar 2014 10:56:27 +0800

本地化时候发生错误：ranslation missing: zh-CN.product.tite 如下：

application.rb

config.i18n.load_path += Dir[Rails.root.join('config', 'locales','*.{rb,yml}').to_s]
config.i18n.default_locale = :"zh-CN"

创建： /config/locales/zh-CN.yml

zh-CN:
  product:
    title:产品

视图 view：

<h1><%= I18n.t('product.title') %></h1>

如果把视图中代码换成 t，也就是快捷方式

<h1><%= t('product.title') %></h1>

视图就会显示"title"。重启服务器了。昨天开始弄本地化的，网上找了下，感觉很简单，好折磨人。求助