mz2test (麦子)

Ruby 低版本安装 charlock_holmes 问题

mz2test — Sun, 21 Feb 2021 11:01:20 +0800

这两天在安装本地环境，使用的是 ruby 2.1.9.在项目中安装 charlock_holmes 依赖，使用 gem 安装成功

$ gem install charlock_holmes -v '0.7.3' -- --with-icu-dir=/usr/local/opt/icu4c@60.2 --with-cxxflags=-std=c++11
Building native extensions with: '--with-icu-dir=/usr/local/opt/icu4c@60.2 --with-cxxflags=-std=c++11'
This could take a while...
Successfully installed charlock_holmes-0.7.3
Parsing documentation for charlock_holmes-0.7.3
Done installing documentation for charlock_holmes after 0 seconds
1 gem installed

但是使用 bundle 安装的时候一直报错

bundle config 配置
build.charlock_holmes
Set for your local app (/Users/jjw/Documents/oschina/gitee-private-code/.bundle/config): "--with-icu-dir=/usr/local/opt/icu4c@60.2 --with-cxxflags=-std=c++11"
Set for the current user (/Users/jjw/.bundle/config): "--with-icu-dir=/usr/local/opt/icu4c@60.2 --with-cxxflags=-std=c++11"

错误：

 current directory: /Users/jjw/Documents/oschina/gitee-private-code/vendor/bundle/ruby/2.1.0/gems/charlock_holmes-0.7.3/ext/charlock_holmes
/Users/jjw/.rvm/rubies/ruby-2.1.9/bin/ruby -I /Users/jjw/.rvm/rubies/ruby-2.1.9/lib/ruby/site_ruby/2.1.0 -r ./siteconf20210221-71958-grpsl3.rb extconf.rb --with-icu-dir\=/usr/local/opt/icu4c@60.2\ --with-cxxflags\=-std\=c\+\+11
checking for main() in -licui18n... no
checking for main() in -licui18n... no


***************************************************************************************
*********** icu required (brew install icu4c or apt-get install libicu-dev) ***********
***************************************************************************************
*** 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=/Users/jjw/.rvm/rubies/ruby-2.1.9/bin/ruby
    --with-icu-dir
    --with-icu-include
    --without-icu-include=${icu-dir}/include
    --with-icu-lib
    --without-icu-lib=${icu-dir}/lib
    --with-icui18nlib
    --without-icui18nlib
    --with-icui18nlib
    --without-icui18nlib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/jjw/Documents/oschina/gitee-private-code/vendor/bundle/ruby/2.1.0/extensions/x86_64-darwin-19/2.1.0/charlock_holmes-0.7.3/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/jjw/Documents/oschina/gitee-private-code/vendor/bundle/ruby/2.1.0/gems/charlock_holmes-0.7.3 for inspection.
Results logged to /Users/jjw/Documents/oschina/gitee-private-code/vendor/bundle/ruby/2.1.0/extensions/x86_64-darwin-19/2.1.0/charlock_holmes-0.7.3/gem_make.out

An error occurred while installing charlock_holmes (0.7.3), and Bundler cannot continue.
Make sure that `gem install charlock_holmes -v '0.7.3' --source 'https://gems.ruby-china.com/'` succeeds before bundling.

In Gemfile:
  github-linguist was resolved to 5.1.0, which depends on
    charlock_holmes

请大家帮忙看看什么问题，感谢！

这是使用 icu4c 67.1，使用$ gem install charlock_holmes -v '0.7.3' -- --with-icu-dir=/usr/local/opt/icu4c --with-cxxflags=-std=c++11 报的错误：

Building native extensions with: '--with-icu-dir=/usr/local/opt/icu4c --with-cxxflags=-std=c++11'
This could take a while...
ERROR:  Error installing charlock_holmes:
    ERROR: Failed to build gem native extension.

    current directory: /Users/jjw/.rvm/gems/ruby-2.1.9/gems/charlock_holmes-0.7.3/ext/charlock_holmes
/Users/jjw/.rvm/rubies/ruby-2.1.9/bin/ruby -I /Users/jjw/.rvm/rubies/ruby-2.1.9/lib/ruby/site_ruby/2.1.0 -r ./siteconf20210221-84999-ya903f.rb extconf.rb --with-icu-dir\=/usr/local/opt/icu4c --with-cxxflags\=-std\=c\+\+11
checking for main() in -licui18n... yes
checking for main() in -licui18n... yes
checking for unicode/ucnv.h... yes
checking for main() in -lz... yes
checking for main() in -licuuc... yes
checking for main() in -licudata... yes
creating Makefile

current directory: /Users/jjw/.rvm/gems/ruby-2.1.9/gems/charlock_holmes-0.7.3/ext/charlock_holmes
make "DESTDIR=" clean

current directory: /Users/jjw/.rvm/gems/ruby-2.1.9/gems/charlock_holmes-0.7.3/ext/charlock_holmes
make "DESTDIR="
compiling ext.c
In file included from ext.c:1:
./common.h:14:14: warning: unused function 'charlock_new_enc_str' [-Wunused-function]
static VALUE charlock_new_enc_str(const char *str, size_t len, void *encoding)
             ^
./common.h:23:14: warning: unused function 'charlock_new_str' [-Wunused-function]
static VALUE charlock_new_str(const char *str, size_t len)
             ^
./common.h:32:14: warning: unused function 'charlock_new_str2' [-Wunused-function]
static VALUE charlock_new_str2(const char *str)
             ^
3 warnings generated.
compiling encoding_detector.c
encoding_detector.c:166:71: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
                ucsdet_setDeclaredEncoding(detector->csd, RSTRING_PTR(rb_enc_hint), RSTRING_LEN(rb_enc_hint), &status);
                ~~~~~~~~~~~~~~~~~~~~~~~~~~                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:843:6: note: expanded from macro 'RSTRING_LEN'
     RSTRING_EMBED_LEN(str) : \
     ^~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:839:6: note: expanded from macro 'RSTRING_EMBED_LEN'
     (long)((RBASIC(str)->flags >> RSTRING_EMBED_LEN_SHIFT) & \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
encoding_detector.c:166:71: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
                ucsdet_setDeclaredEncoding(detector->csd, RSTRING_PTR(rb_enc_hint), RSTRING_LEN(rb_enc_hint), &status);
                ~~~~~~~~~~~~~~~~~~~~~~~~~~                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:844:28: note: expanded from macro 'RSTRING_LEN'
     RSTRING(str)->as.heap.len)
     ~~~~~~~~~~~~~~~~~~~~~~^~~
encoding_detector.c:215:71: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
                ucsdet_setDeclaredEncoding(detector->csd, RSTRING_PTR(rb_enc_hint), RSTRING_LEN(rb_enc_hint), &status);
                ~~~~~~~~~~~~~~~~~~~~~~~~~~                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:843:6: note: expanded from macro 'RSTRING_LEN'
     RSTRING_EMBED_LEN(str) : \
     ^~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:839:6: note: expanded from macro 'RSTRING_EMBED_LEN'
     (long)((RBASIC(str)->flags >> RSTRING_EMBED_LEN_SHIFT) & \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
encoding_detector.c:215:71: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
                ucsdet_setDeclaredEncoding(detector->csd, RSTRING_PTR(rb_enc_hint), RSTRING_LEN(rb_enc_hint), &status);
                ~~~~~~~~~~~~~~~~~~~~~~~~~~                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:844:28: note: expanded from macro 'RSTRING_LEN'
     RSTRING(str)->as.heap.len)
     ~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from encoding_detector.c:2:
./common.h:14:14: warning: unused function 'charlock_new_enc_str' [-Wunused-function]
static VALUE charlock_new_enc_str(const char *str, size_t len, void *encoding)
             ^
5 warnings generated.
compiling converter.c
converter.c:23:12: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
        src_len = RSTRING_LEN(rb_txt);
                ~ ^~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:843:6: note: expanded from macro 'RSTRING_LEN'
     RSTRING_EMBED_LEN(str) : \
     ^~~~~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:839:6: note: expanded from macro 'RSTRING_EMBED_LEN'
     (long)((RBASIC(str)->flags >> RSTRING_EMBED_LEN_SHIFT) & \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
converter.c:23:12: warning: implicit conversion loses integer precision: 'long' to 'int32_t' (aka 'int') [-Wshorten-64-to-32]
        src_len = RSTRING_LEN(rb_txt);
                ~ ^~~~~~~~~~~~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:844:28: note: expanded from macro 'RSTRING_LEN'
     RSTRING(str)->as.heap.len)
     ~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from converter.c:2:
./common.h:23:14: warning: unused function 'charlock_new_str' [-Wunused-function]
static VALUE charlock_new_str(const char *str, size_t len)
             ^
./common.h:32:14: warning: unused function 'charlock_new_str2' [-Wunused-function]
static VALUE charlock_new_str2(const char *str)
             ^
4 warnings generated.
compiling transliterator.cpp
In file included from transliterator.cpp:1:
In file included from ./common.h:9:
In file included from /Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby.h:33:
In file included from /Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/ruby.h:1702:
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/intern.h:47:19: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
void rb_mem_clear(register VALUE*, register long);
                  ^~~~~~~~~
/Users/jjw/.rvm/rubies/ruby-2.1.9/include/ruby-2.1.0/ruby/intern.h:47:36: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
void rb_mem_clear(register VALUE*, register long);
                                   ^~~~~~~~~
transliterator.cpp:39:3: error: unknown type name 'StringEnumeration'; did you mean 'icu_67::StringEnumeration'?
  StringEnumeration *id_list;
  ^~~~~~~~~~~~~~~~~
  icu_67::StringEnumeration
/usr/local/opt/icu4c/include/unicode/strenum.h:61:20: note: 'icu_67::StringEnumeration' declared here
class U_COMMON_API StringEnumeration : public UObject {
                   ^
transliterator.cpp:47:13: error: use of undeclared identifier 'Transliterator'; did you mean 'icu_67::Transliterator'?
  id_list = Transliterator::getAvailableIDs(status);
            ^~~~~~~~~~~~~~
            icu_67::Transliterator
/usr/local/opt/icu4c/include/unicode/translit.h:490:18: note: 'icu_67::Transliterator' declared here
class U_I18N_API Transliterator : public UObject {
                 ^
transliterator.cpp:81:3: error: unknown type name 'Transliterator'; did you mean 'UTransliterator'?
  Transliterator *trans;
  ^~~~~~~~~~~~~~
  UTransliterator
/usr/local/opt/icu4c/include/unicode/utrans.h:70:15: note: 'UTransliterator' declared here
typedef void* UTransliterator;
              ^
transliterator.cpp:86:3: error: unknown type name 'UnicodeString'; did you mean 'icu_67::UnicodeString'?
  UnicodeString *u_txt;
  ^~~~~~~~~~~~~
  icu_67::UnicodeString
/usr/local/opt/icu4c/include/unicode/unistr.h:294:20: note: 'icu_67::UnicodeString' declared here
class U_COMMON_API UnicodeString : public Replaceable
                   ^
transliterator.cpp:101:11: error: use of undeclared identifier 'Transliterator'; did you mean 'icu_67::Transliterator'?
  trans = Transliterator::createInstance(UnicodeString(id, id_len), UTRANS_FORWARD, p_error, status);
          ^~~~~~~~~~~~~~
          icu_67::Transliterator
/usr/local/opt/icu4c/include/unicode/translit.h:490:18: note: 'icu_67::Transliterator' declared here
class U_I18N_API Transliterator : public UObject {
                 ^
transliterator.cpp:101:42: error: use of undeclared identifier 'UnicodeString'; did you mean 'icu_67::UnicodeString'?
  trans = Transliterator::createInstance(UnicodeString(id, id_len), UTRANS_FORWARD, p_error, status);
                                         ^
/usr/local/opt/icu4c/include/unicode/unistr.h:294:20: note: 'icu_67::UnicodeString' declared here
class U_COMMON_API UnicodeString : public Replaceable
                   ^
transliterator.cpp:106:15: error: unknown type name 'UnicodeString'; did you mean 'icu_67::UnicodeString'?
  u_txt = new UnicodeString(txt, txt_len);
              ^~~~~~~~~~~~~
              icu_67::UnicodeString
/usr/local/opt/icu4c/include/unicode/unistr.h:294:20: note: 'icu_67::UnicodeString' declared here
class U_COMMON_API UnicodeString : public Replaceable
                   ^
transliterator.cpp:107:8: error: member reference base type 'UTransliterator' (aka 'void *') is not a structure or union
  trans->transliterate(*u_txt);
  ~~~~~^ ~~~~~~~~~~~~~
transliterator.cpp:108:30: error: expected ';' after expression
  StringByteSink<std::string> sink(&result);
                             ^
                             ;
transliterator.cpp:108:3: error: use of undeclared identifier 'StringByteSink'
  StringByteSink<std::string> sink(&result);
  ^
transliterator.cpp:108:31: error: use of undeclared identifier 'sink'
  StringByteSink<std::string> sink(&result);
                              ^
transliterator.cpp:109:17: error: use of undeclared identifier 'sink'
  u_txt->toUTF8(sink);
                ^
2 warnings and 12 errors generated.
make: *** [transliterator.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/jjw/.rvm/gems/ruby-2.1.9/gems/charlock_holmes-0.7.3 for inspection.
Results logged to /Users/jjw/.rvm/gems/ruby-2.1.9/extensions/x86_64-darwin-19/2.1.0/charlock_holmes-0.7.3/gem_make.out

[黑龙江] 招聘 Ruby 工程师两名，10-20k，可远程。

mz2test — Sun, 06 Sep 2020 12:51:21 +0800

大家好，我们是一个比较稳定的公司，现在需要两名名熟悉 Ruby on rails 的全栈工程师，具体职位需求如下，谢谢大家。

联系邮箱：xinlulu321@163.com

高级全栈工程师做什么

参与项目研发，解决团队关键技术问题，参与产品需求与任务评估。为团队的技术交付负责。根据技术孵化的项目特点，规划中长期技术方案，提升团队研发效率。持续优化团队敏捷研发流程。要求

非常熟练 Ruby on Rails，掌握 Rails 的技术原理，并对其他技术栈亦有一定了解。熟练 Javascript/Vue 及其生态，拥有相关项目经验。熟练 Linux、Git、HTTP 等。具备良好的沟通能力，团队意识强。待遇

根据你的能力，10~20K 月薪，可远程。

本地搭建 homeland 代码

mz2test — Tue, 14 Apr 2020 20:42:31 +0800

我在 clone 下 homeland 代码，在本地运行。css 和 js 文件无法访问，但是在 public 下的 assets 目录中有编译好的 css 和 js 文件。是什么地方需要配置一下吗？

asset 图片显示问题

mz2test — Mon, 03 Dec 2018 12:33:12 +0800

在 assets 中保存了图片 app/assets/images/group.png. 在 view 中，使用

<%= image_tag('group.png') %>         # 正常显示图片
<%= image_path('group.png') %>       # 正常显示图片路径

正确的图片路径是：http://localhost:3000/assets/group-97f7199986c494166ebad0b0f6b13ee78689d661112547f81e6d373c00eaeeca.png

我希望在 model 中输出该图片的路径，请问有什么办法吗？如果在 model 中直接使用 image_path，输出的是/assets/group.png。无法展示。

今天部署 Rails 项目，部署完以后，puma 中断报错了。

mz2test — Thu, 14 Sep 2017 09:14:08 +0800

Using RVM environment "ruby-2.3.1"
       Using /usr/local/rvm/gems/ruby-2.3.1
-----> Starting Puma...
       [15235] Puma starting in cluster mode...
       [15235] * Version 3.10.0 (ruby 2.3.1-p112), codename: Russell's Teapot
       [15235] * Min threads: 2, max threads: 16
       [15235] * Environment: production
       [15235] * Process workers: 2
       [15235] * Preloading application
       [15235] ! Unable to load application: ArgumentError: Before process_action callback :verify_authenticity_token has not been defined
       bundler: failed to load command: puma (/var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/bin/puma)
       ArgumentError: Before process_action callback :verify_authenticity_token has not been defined
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:712:in `block (2 levels) in skip_callback'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:708:in `each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:708:in `block in skip_callback'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:622:in `block in __update_callbacks'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:620:in `reverse_each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:620:in `__update_callbacks'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/callbacks.rb:707:in `skip_callback'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.3/lib/abstract_controller/callbacks.rb:181:in `block (3 levels) in <module:ClassMethods>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.3/lib/abstract_controller/callbacks.rb:74:in `block in _insert_callbacks'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.3/lib/abstract_controller/callbacks.rb:73:in `each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.3/lib/abstract_controller/callbacks.rb:73:in `_insert_callbacks'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.3/lib/abstract_controller/callbacks.rb:180:in `block (2 levels) in <module:ClassMethods>'
         /var/www/lxyin_api/shared/vendor/bundle/ruby/2.3.0/bundler/gems/rails_kindeditor-00fb549580d1/app/controllers/kindeditor/assets_controller.rb:4:in `<class:AssetsController>'
         /var/www/lxyin_api/shared/vendor/bundle/ruby/2.3.0/bundler/gems/rails_kindeditor-00fb549580d1/app/controllers/kindeditor/assets_controller.rb:3:in `<top (required)>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:292:in `require'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:292:in `block in require'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:258:in `load_dependency'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:292:in `require'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:379:in `block in require_or_load'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:36:in `block in load_interlock'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies/interlock.rb:12:in `block in loading'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/concurrency/share_lock.rb:149:in `exclusive'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies/interlock.rb:11:in `loading'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:36:in `load_interlock'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:357:in `require_or_load'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:335:in `depend_on'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.3/lib/active_support/dependencies.rb:251:in `require_dependency'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:476:in `block (2 levels) in eager_load!'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:475:in `each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:475:in `block in eager_load!'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:473:in `each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:473:in `eager_load!'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/engine.rb:354:in `eager_load!'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/application/finisher.rb:67:in `each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/application/finisher.rb:67:in `block in <module:Finisher>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/initializable.rb:30:in `instance_exec'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/initializable.rb:30:in `run'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/initializable.rb:59:in `block in run_initializers'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:347:in `each'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:347:in `call'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each'
         /usr/local/rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/initializable.rb:58:in `run_initializers'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/railties-5.1.3/lib/rails/application.rb:353:in `initialize!'
         /var/www/lxyin_api/releases/1/config/environment.rb:5:in `<top (required)>'
         config.ru:3:in `require_relative'
         config.ru:3:in `block in <main>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/builder.rb:55:in `instance_eval'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/builder.rb:55:in `initialize'
         config.ru:in `new'
         config.ru:in `<main>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/builder.rb:49:in `eval'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/builder.rb:49:in `new_from_string'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/builder.rb:40:in `parse_file'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/configuration.rb:314:in `load_rackup'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/configuration.rb:243:in `app'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/runner.rb:138:in `load_and_bind'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/cluster.rb:397:in `run'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/launcher.rb:183:in `run'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/lib/puma/cli.rb:77:in `run'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/gems/puma-3.10.0/bin/puma:10:in `<top (required)>'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/bin/puma:23:in `load'
         /var/www/lxyin_api/releases/1/vendor/bundle/ruby/2.3.0/bin/puma:23:in `<top (required)>'

请教一下，这是什么原因导致的。

Rails 中使用 Gem default_value_for 的问题

mz2test — Sun, 03 Sep 2017 02:32:08 +0800

Gemfile 中引用

gem 'default_value_for'

在 model 中引用

class Product < ApplicationRecord
  default_value_for :cost_count, 0
end

然后在 console 中执行 new 的时候报错：

Running via Spring preloader in process 759
Loading development environment (Rails 5.1.3)
2.3.4 :001 > Product.new
ArgumentError: wrong number of arguments (given 2, expected 0..1)
    from (irb):1

想问一下这个问题是什么问题？

使用 send_file 下载文件问题

mz2test — Wed, 09 Aug 2017 16:58:21 +0800

使用前后端分离的方式写文件下载时，在 chrome 浏览器中下载没问题，到了 IE 上就显示乱码，请教一下是什么问题造成的，该怎么解决？下面是代码：

def show
    asset = Asset.find(params[:id])
    if asset.try(:file).try(:file).try(:file)
      send_file(asset.file.file.file, filename: asset.file_name)
    else
      render nothing: true
    end
  end

Asset 中：

def downloadPath
  Rails.application.routes.url_helpers.api_v1_asset_url(:host => Settings.app_host, :id => self.id)
end

异步定时任务 Sidekiq Whenever 问题

mz2test — Mon, 21 Mar 2016 19:01:38 +0800

各位，我现在碰到一个问题。在做异步任务的时候，我希望每天在指定时间执行一次异步任务。我是这样做的：

Gemfile

# 异步
gem 'sidekiq'
gem 'sidekiq-failures'
gem 'sidekiq-middleware'
gem 'whenever',:require => false  # 定时任务
gem 'sinatra', :require => nil

example_job.rb

class ExampleJob < ActiveJob::Base
  queue_as :default

  def perform(*args)
    # Do something later
    puts 'this is a JobExample...'
    Chamber.create(name: "test", url: "http://www.baidu.com")
  end
end

schedule.rb

every 1.minutes do
    runner "ExampleJob.perform_later()", :environment => :development
end

然后命令行中: whenever --update-crontab store bundle exec sidekiq

然后修改 schedule.rb 中的 Job，换用另外的一个 Job 任务执行，发现无法更换了。一直在执行 ExampleJob 这个任务。请问这是什么问题？