lgor (花末)

关于 Ruby 的正则问题

lgor — Thu, 14 Jun 2018 09:58:02 +0800

我有一批字符串，规律是“数字 + 字母 + 数字 + 字母 + 数字”，数字和字母可以是任意一个或多个，如：1A03F4F、16DC203B5R。我想要正则提取开头的第一段数字、第一段字母、第二段数字、第二段字母等，请教大家该怎么写？

故意访问了一次错误路径，结果所有接口都蹦出来了，这可咋办？

lgor — Wed, 24 Jan 2018 10:02:24 +0800

访问错了一个接口（未登陆、无 token 状态下），发现这个报错信息把我整个项目所有接口都列出来了

rails 该怎么做这些错误处理呢？

开发环境的上传图片失败，生产环境却可以，请问哪里出了问题呢？

lgor — Thu, 04 Jan 2018 10:55:39 +0800

使用 vue 的 element-ui 里面的 el-upload 做图片上传，可是在开发环境怎么都不成功，每次都报 422 错误。代码如下

def img_upload
  setting = SystemSetting.select("id,welcome_img").first
  if setting.update_attributes(welcome_img: params[:welcome])
    setting.reload 
    success_res(msg: '操作成功', welcome_img: setting.welcome_img.url)
  else
    fail_res
  end
end

<el-upload
          class="img-uploader"
          action="system_settings/img_upload" 
          :data="{id: 1}"
           name="welcome"
          :show-file-list="false"
          :multiple="false"
          :on-success="handleAvatarSuccess"
          :on-error="uploadError"
          :before-upload="beforeAvatarUpload">
</el-upload>

上面的代码在生产环境是没问题的，但是开发环境就会报以下错误：

2018-01-04T10:52:36+08:00 [ INFO] 30780 : Started POST "/system_settings/img_upload" for 218.19.139.159 at 2018-01-04 10:52:36 +0800
2018-01-04T10:52:36+08:00 [ INFO] 30780 : Processing by ApplicationController#routing_error as */*
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Parameters: {"id"=>"1", "welcome"=>#<ActionDispatch::Http::UploadedFile:0x000000069c7ad8 @tempfile=#<Tempfile:/tmp/RackMultipart20180104-30780-daiso.png>, @original_filename="403.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"welcome\"; filename=\"403.png\"\r\nContent-Type: image/png\r\n">, "path"=>"system_settings/img_upload"}
2018-01-04T10:52:36+08:00 [DEBUG] 30780 : Geokit is using the domain: 
2018-01-04T10:52:36+08:00 [ WARN] 30780 : Can't verify CSRF token authenticity.
2018-01-04T10:52:36+08:00 [ INFO] 30780 : Completed 422 Unprocessable Entity in 1ms (ActiveRecord: 0.0ms)


2018-01-04T10:52:36+08:00 [FATAL] 30780 :   
2018-01-04T10:52:36+08:00 [FATAL] 30780 : ActionController::InvalidAuthenticityToken (ActionController::InvalidAuthenticityToken):
2018-01-04T10:52:36+08:00 [FATAL] 30780 :   
2018-01-04T10:52:36+08:00 [FATAL] 30780 : actionpack (5.0.1) lib/action_controller/metal/request_forgery_protection.rb:195:in `handle_unverified_request'
actionpack (5.0.1) lib/action_controller/metal/request_forgery_protection.rb:223:in `handle_unverified_request'
actionpack (5.0.1) lib/action_controller/metal/request_forgery_protection.rb:218:in `verify_authenticity_token'
activesupport (5.0.1) lib/active_support/callbacks.rb:382:in `block in make_lambda'
activesupport (5.0.1) lib/active_support/callbacks.rb:169:in `block (2 levels) in halting'
actionpack (5.0.1) lib/abstract_controller/callbacks.rb:12:in `block (2 levels) in <module:Callbacks>'
activesupport (5.0.1) lib/active_support/callbacks.rb:170:in `block in halting'
activesupport (5.0.1) lib/active_support/callbacks.rb:454:in `block in call'
activesupport (5.0.1) lib/active_support/callbacks.rb:454:in `each'
activesupport (5.0.1) lib/active_support/callbacks.rb:454:in `call'
activesupport (5.0.1) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
activesupport (5.0.1) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
activesupport (5.0.1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.1) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.0.1) lib/action_controller/metal/rescue.rb:20:in `process_action'
actionpack (5.0.1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.0.1) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (5.0.1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.0.1) lib/active_support/notifications.rb:164:in `instrument'
actionpack (5.0.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.0.1) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
activerecord (5.0.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (5.0.1) lib/abstract_controller/base.rb:126:in `process'
actionview (5.0.1) lib/action_view/rendering.rb:30:in `process'
actionpack (5.0.1) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (5.0.1) lib/action_controller/metal.rb:262:in `dispatch'
actionpack (5.0.1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (5.0.1) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (5.0.1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.1) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.1) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.1) lib/action_dispatch/routing/route_set.rb:725:in `call'
rack (2.0.1) lib/rack/etag.rb:25:in `call'
rack (2.0.1) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.1) lib/rack/head.rb:12:in `call'
rack (2.0.1) lib/rack/session/abstract/id.rb:222:in `context'
rack (2.0.1) lib/rack/session/abstract/id.rb:216:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/cookies.rb:613:in `call'
activerecord (5.0.1) lib/active_record/migration.rb:553:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.1) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.1) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.1) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
web-console (3.4.0) lib/web_console/middleware.rb:135:in `call_app'
web-console (3.4.0) lib/web_console/middleware.rb:28:in `block in call'
web-console (3.4.0) lib/web_console/middleware.rb:18:in `catch'
web-console (3.4.0) lib/web_console/middleware.rb:18:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.1) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.1) lib/rails/rack/logger.rb:26:in `call'
sprockets-rails (3.2.0) lib/sprockets/rails/quiet_assets.rb:13:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.1) lib/rack/method_override.rb:22:in `call'
rack (2.0.1) lib/rack/runtime.rb:22:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.1) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.1) lib/rack/sendfile.rb:111:in `call'
railties (5.0.1) lib/rails/engine.rb:522:in `call'
rack (2.0.1) lib/rack/handler/webrick.rb:86:in `service'
/usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:140:in `service'
/usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:96:in `run'
/usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/server.rb:296:in `block in start_thread'
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendering /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendering /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendered /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (2.3ms)
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendering /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendered /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.2ms)
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendering /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendered /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.0ms)
2018-01-04T10:52:36+08:00 [ INFO] 30780 :   Rendered /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (22.1ms)
2018-01-04T10:52:36+08:00 [ERROR] 30780 : 
TypeError: no implicit conversion of Yell::Silencer into String
    from /usr/local/rvm/gems/ruby-2.3.1/gems/web-console-3.4.0/lib/web_console/response.rb:11:in `insert'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/web-console-3.4.0/lib/web_console/response.rb:11:in `write'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/web-console-3.4.0/lib/web_console/middleware.rb:36:in `block in call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/web-console-3.4.0/lib/web_console/middleware.rb:18:in `catch'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/web-console-3.4.0/lib/web_console/middleware.rb:18:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/railties-5.0.1/lib/rails/rack/logger.rb:36:in `call_app'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/railties-5.0.1/lib/rails/rack/logger.rb:26:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/sprockets-rails-3.2.0/lib/sprockets/rails/quiet_assets.rb:13:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/request_id.rb:24:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/rack-2.0.1/lib/rack/method_override.rb:22:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/rack-2.0.1/lib/rack/runtime.rb:22:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/executor.rb:12:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/actionpack-5.0.1/lib/action_dispatch/middleware/static.rb:136:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/rack-2.0.1/lib/rack/sendfile.rb:111:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/railties-5.0.1/lib/rails/engine.rb:522:in `call'
    from /usr/local/rvm/gems/ruby-2.3.1/gems/rack-2.0.1/lib/rack/handler/webrick.rb:86:in `service'
    from /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:140:in `service'
    from /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:96:in `run'
    from /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/webrick/server.rb:296:in `block in start_thread'

请大家帮忙看看，怎么解决这个问题，谢谢！

请问怎么用 CarrierWave 上传 base64 的图片？或者怎么用 rails 把 base64 的字符串转换成图片存储在服务器？

lgor — Fri, 24 Nov 2017 11:31:40 +0800

我用 CarrierWave 上传文件能成功，但如果把文件换成 base64 字符串就失败了，下面是我的 uploader 代码

class Base64Uploader < CarrierWave::Uploader::Base

  include CarrierWave::MiniMagick

  storage :file

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  version :thumb do
    process resize_to_fill: [80, 80]
  end

  def extension_whitelist
    %w(jpg jpeg gif png)
  end
end

对应的 model 里面也有写 mount_uploader

mount_uploader :avatar, Base64Uploader

但是如果把接口的 params[:file] 从文件换成 base64 字符串就无法成功。请问是还有哪里需要配置一下吗？还有就是，ruby 里面可以直接把 base64 字符串转成图片吗？刚学习 rails 几个月，菜鸟一个。测试搜索了好久，都没有成功，心好累，求指点一下

求助！在 Windows 下安装 “rmagick” 失败，已经安装了 Windows 版本的 ImageMagick，还是一样报错

lgor — Thu, 10 Aug 2017 14:51:28 +0800

执行“bundle install”时报错：

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rmagick-2.16.0/ext/RMagick
D:/develop/Ruby23-x64/bin/ruby.exe -r ./siteconf20170810-1028-1n1pw1i.rb
extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=D:/develop/Ruby23-x64/bin/$(RUBY_BASE_NAME)
extconf.rb:141:in ``': No such file or directory - identify -version
(Errno::ENOENT)
        from extconf.rb:141:in `configure_compile_options'
        from extconf.rb:16:in `initialize'
        from extconf.rb:548:in `new'
        from extconf.rb:548:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in
D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rmagick-2.16.0 for inspection.
Results logged to
D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/extensions/x64-mingw32/2.3.0/rmagick-2.16.0/gem_make.out

An error occurred while installing rmagick (2.16.0), and Bundler cannot
continue.
Make sure that `gem install rmagick -v '2.16.0'` succeeds before bundling.

In Gemfile:
  rmagick

然后我在网上找了一些资料，说是要先安装“ImageMagick”，我下载安装之后，执行 gem install rmagick -- '--with-opt-dir="C:/Program Files/ImageMagick-7.0.6-Q16"'还是报错：

Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-opt-dir="C:/Program Files/ImageMagick-7.0.6-Q16"'
This could take a while...
ERROR:  Error installing rmagick:
        ERROR: Failed to build gem native extension.

    current directory: D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rmagick-2.16.0/ext/RMagick
D:/develop/Ruby23-x64/bin/ruby.exe -r ./siteconf20170810-5204-f29kli.rb extconf.rb --with-opt-dir="C:/Program Files/ImageMagick-7.0.6-Q16"
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=D:/develop/Ruby23-x64/bin/$(RUBY_BASE_NAME)
extconf.rb:141:in ``': No such file or directory - identify -version (Errno::ENOENT)
        from extconf.rb:141:in `configure_compile_options'
        from extconf.rb:16:in `initialize'
        from extconf.rb:548:in `new'
        from extconf.rb:548:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rmagick-2.16.0 for inspection.
Results logged to D:/develop/Ruby23-x64/lib/ruby/gems/2.3.0/extensions/x64-mingw32/2.3.0/rmagick-2.16.0/gem_make.out

尤其是这一句：

extconf.rb:141:in ``': No such file or directory - identify -version (Errno::ENOENT)

好像跟别人的不一样，但实在找不出哪里出错了，请大家帮忙看看，谢谢！

使用 mina 部署项目，遇到问题了，求助！：Sprockets::FileNotFound: couldn't find file 'jquery' with type 'application/javascript'

lgor — Mon, 07 Aug 2017 11:55:35 +0800

项目是 rails 做服务器，vue 写后台管理调接口。在使用 mina 部署的时候，执行“mina staging deploy”命令的时候，报错：

       Bundle complete! 35 Gemfile dependencies, 89 gems now installed.
       Gems in the groups development and test were not installed.
       Bundled gems are installed into ./vendor/bundle.
       Files /usr/local/ruby/workspace/nextdoor_staging/current/app/assets/config/manifest.js and ./app/assets/config/manifest.js differ
       Files /usr/local/ruby/workspace/nextdoor_staging/current/app/assets/javascripts/application.js and ./app/assets/javascripts/application.js differ
       Files /usr/local/ruby/workspace/nextdoor_staging/current/app/assets/javascripts/cable.js and ./app/assets/javascripts/cable.js differ
       Files /usr/local/ruby/workspace/nextdoor_staging/current/app/assets/stylesheets/application.css and ./app/assets/stylesheets/application.css differ
-----> Precompiling asset files
       ** Invoke assets:precompile (first_time)
       ** Invoke assets:environment (first_time)
       ** Execute assets:environment
       ** Invoke environment (first_time)
       ** Execute environment
       ** Execute assets:precompile
       rake aborted!
       Sprockets::FileNotFound: couldn't find file 'jquery' with type 'application/javascript'
       Checked in these paths: 
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/app/assets/config
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/app/assets/images
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/app/assets/javascripts
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/app/assets/stylesheets
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/assets/javascripts
         /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/assets/stylesheets
         /usr/local/ruby/workspace/nextdoor_staging/shared/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.1/lib/assets/compiled
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/app/assets/javascripts/application.js:13
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/resolve.rb:65:in `resolve!'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:399:in `resolve'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:207:in `process_require_directive'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:180:in `block in process_directives'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:178:in `each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:178:in `process_directives'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:83:in `_call'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/directive_processor.rb:68:in `call'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/bundle.rb:23:in `block in call'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/utils.rb:200:in `dfs'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/bundle.rb:24:in `call'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
       /usr/local/ruby/workspace/nextdoor_staging/tmp/build-150207753616923/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli/exec.rb:74:in `load'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli/exec.rb:74:in `kernel_load'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli/exec.rb:27:in `run'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli.rb:365:in `exec'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/vendor/thor/lib/thor.rb:369:in `dispatch'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli.rb:22:in `dispatch'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/vendor/thor/lib/thor/base.rb:444:in `start'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/cli.rb:13:in `start'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/exe/bundle:30:in `block in <top (required)>'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/lib/bundler/friendly_errors.rb:121:in `with_friendly_errors'
       /root/.rvm/gems/ruby-2.3.1/gems/bundler-1.15.3/exe/bundle:22:in `<top (required)>'
       /root/.rvm/gems/ruby-2.3.1/bin/bundle:23:in `load'
       /root/.rvm/gems/ruby-2.3.1/bin/bundle:23:in `<main>'
       /root/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
       /root/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'
       Tasks: TOP => assets:precompile
       (See full trace by running task with --trace)
 !     ERROR: Deploy failed.
-----> Cleaning up build
       Unlinking current
       OK
       Connection to 120.77.232.66 closed.

 !     Run Error

部署配置文件是 staging.rb:

主要是这句错“Sprockets::FileNotFound: couldn't find file 'jquery' with type 'application/javascript'”，因为是用 vue 写的界面，app/assets 下并没有什么 js 文件，只有这些：

不知道为什么还报这个错。而且“Files /usr/local/ruby/workspace/nextdoor_staging/current/app/assets/config/manifest.js and ./app/assets/config/manifest.js differ”说两个文件不一样，但都是同一个 git 的分支 pull 下来的，应该是一样才对。求各位解答指点一下，O(∩_∩)O 谢谢

请问 Ruby on Rails 有没有不用 Model 与 SQL 表对应也能直接操作数据库的类？

lgor — Thu, 13 Jul 2017 15:19:07 +0800

刚学 rails 不久，因为之前用过 Java 的 jfinal 框架，两者的 Active Record 是一样的。

但 Jfinal 里面有 Db 和 Record 这两个类，可以不用预先配置好 sql 表跟 model 的映射，Record 直接能像 model 一样获取数据。

rails 里面有没有类似的类与方法呢？

最近开发一个 app 项目，后台是用 rails 写的，但接入了第三方 H5 的页面系统（后台是 Java 写的），为了便于交互，现在把两者的服务器放在同一台主机了，sql 表也放在同一个数据库中，现在想用 rails 读取 H5 系统中原先有的表，该怎么操作呢？

rails 后台并不需要对 H5 的表做太多操作，只是偶尔有读取和修改的需求，拿来再建立十几二十个 rails 的模型来映射表又有点浪费的感觉，请大神指点！

用 Rails.cache 写入服务器的缓存失效了，请问是什么原因呢

lgor — Sat, 10 Jun 2017 20:29:03 +0800

第一个红框是生成的 key 写入缓存，第二个是用 key 读取测试，可以成功读取到，第三个是用户再次访问时用 key 就读取不到数据了。写入缓存的方法如下


def gen(outid, partner)
  code = generate_code
  #code = "123456"
  key  = cache_key(partner.appid, code)

  write_cache(key, outid, partner)
  puts "read key test--------------------------------"
  puts key
  puts cache.read(key)

  puts "read key test--------------------------------"
  code
end

def cache
  Rails.cache
end

def write_cache(key, outid, partner)
  info = {
    outid: outid,
    appid: partner.appid,
    appsecret: partner.appsecret
  }.to_json
  puts "write key-----------------------"

  puts key

  puts "write key-----------------------"

  cache.write(key, info, expires_in: 30.minutes.to_i)
end

读取方法如下

搞了一个多小时没解决，缓存设置的有效时间是半小时，但是这里立马就失效了，求教