Sylor-huang (udask)

Action mailbox 收件不成功的问题

Sylor-huang — Sun, 18 Apr 2021 15:02:57 +0800

大家好，我现在是在测试搭建一个邮件服务系统，目前只需要能收到邮件就行，但是我上线 production 后，使用 126 邮箱去给这个服务器发送邮件时，提示一直在发送中，服务器也没有收到任何的请求，我怀疑是 nginx 配置不对，但是又不知道怎么去配置，没有找到类似的资料，请大家指点我下，非常感谢～

服务器和域名都是阿里云的，域名解析应该都是正常的：

可以 ping 的通 mail 子域名

网站是采用前后分离的，且服务器里使用的是 docker 部署的

docker 开启的端口为 443 和 587

docker 里的 rails 服务启动后端口为 3005

ActionMailbox 的配置为：

class ApplicationMailbox < ActionMailbox::Base
  routing /@udask.cn/i => :articles
  routing :all => :articles
end

自定义的 ArticlesMailbox

class ArticlesMailbox < ApplicationMailbox
def process
InMailboxJob.perform_later(mail)
rescue => e 
puts e
end
end

nginx 配置

user udask;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;
events {
  worker_connections 1024;
}
mail {
  server_name mail.udask.cn;
  auth_http 127.0.0.1:3005;
  ssl on;
  ssl_certificate ...;
  ssl_certificate_key ...;
  ssl_session_timeout 5m;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
  ssl_prefer_server_ciphers on;
}
http {
  ....
}

请大家指点我下，非常感谢～

Rails Mime::Type::InvalidMimeType 的异常在本地是返回 406 错误，但是线上是 500 错误

Sylor-huang — Sat, 12 Dec 2020 13:55:14 +0800

各位大佬好，我现在碰到了 Mime::Type::InvalidMimeType 的错误，尝试查看了一些资料，但是还没有找到解决办法。

Rails 下的评论，说是 406 为正常的： https://github.com/rails/rails/issues/37620#issuecomment-549192459

1. 在本地运行的时候，是返回正常的 406:

curl --verbose -H "Content-Type: %{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('X-Hacker','Bounty Plz')}.multipart/form-data" http://127.0.0.1:3000

# 提示信息

*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to 127.0.0.1 (127.0.0.1) port 3000 (#0)
> GET / HTTP/1.1
> Host: 127.0.0.1:3000
> User-Agent: curl/7.64.1
> Accept: */*
> Content-Type: %{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('X-Hacker','Bounty Plz')}.multipart/form-data
>
< HTTP/1.1 406 Not Acceptable
< Content-Type: text/html; charset=UTF-8
< X-Request-Id: 00ed739d-d934-40d7-8d70-460c4603adc5
< X-Runtime: 9.716673
< Content-Length: 0
<
* Connection #0 to host 127.0.0.1 left intact
* Closing connection 0

2. 但是线上环境运行的时候，返回的却是 500 错误

curl --verbose -H "Content-Type: %{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('X-Hacker','Bounty Plz')}.multipart/form-data" https://xxxx.com/

#提示信息

* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* ALPN, server accepted to use h2
* Server certificate:
*  subject: CN=*.xxx.info
*  start date: Aug  9 00:00:00 2020 GMT
*  expire date: Sep  8 12:00:00 2021 GMT
*  subjectAltName: host "xxxx.info" matched cert's "*.xxxx.info"
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x7f8f9300aa00)
> GET / HTTP/2
> Host: xxxx.info
> User-Agent: curl/7.64.1
> Accept: */*
> Content-Type: %{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('X-Hacker','Bounty Plz')}.multipart/form-data
>
* Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
< HTTP/2 500
< date: Sat, 12 Dec 2020 05:46:41 GMT
< content-length: 77
<
An unhandled lowlevel error occurred. The application logs may have details.
* Connection #0 to host xxxx.info left intact
* Closing connection 0

# production 的log
[d939ca07-6d06-49f0-a26e-858d387244d4] Mime::Type::InvalidMimeType ("%{#context['com.opensymphony.xwork2.dispatcher.httpservletresponse'].addheader('x-hacker'" is not a valid MIME type):
[d939ca07-6d06-49f0-a26e-858d387244d4]
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/mime_type.rb:235:in `initialize'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/mime_type.rb:143:in `new'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/mime_type.rb:143:in `lookup'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/mime_negotiation.rb:23:in `block in content_mime_type'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/request.rb:69:in `fetch'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/request.rb:69:in `fetch_header'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/mime_negotiation.rb:21:in `content_mime_type'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_controller/metal/params_wrapper.rb:278:in `_wrapper_enabled?'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_controller/metal/params_wrapper.rb:244:in `process_action'
[d939ca07-6d06-49f0-a26e-858d387244d4] activerecord (6.0.2.1) lib/active_record/railties/controller_runtime.rb:27:in `process_action'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/abstract_controller/base.rb:136:in `process'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionview (6.0.2.1) lib/action_view/rendering.rb:39:in `process'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_controller/metal.rb:191:in `dispatch'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_controller/metal.rb:252:in `dispatch'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/routing/route_set.rb:51:in `dispatch'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/routing/route_set.rb:33:in `serve'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/journey/router.rb:49:in `block in serve'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/journey/router.rb:32:in `each'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/journey/router.rb:32:in `serve'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/routing/route_set.rb:837:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] apipie-rails (0.5.17) lib/apipie/static_dispatcher.rb:66:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] apipie-rails (0.5.17) lib/apipie/extractor/recorder.rb:137:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] warden (1.2.8) lib/warden/manager.rb:36:in `block in call'
[d939ca07-6d06-49f0-a26e-858d387244d4] warden (1.2.8) lib/warden/manager.rb:34:in `catch'
[d939ca07-6d06-49f0-a26e-858d387244d4] warden (1.2.8) lib/warden/manager.rb:34:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/tempfile_reaper.rb:15:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/etag.rb:27:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/conditional_get.rb:27:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/head.rb:12:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/http/content_security_policy.rb:18:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/session/abstract/id.rb:266:in `context'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/session/abstract/id.rb:260:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/cookies.rb:648:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
[d939ca07-6d06-49f0-a26e-858d387244d4] activesupport (6.0.2.1) lib/active_support/callbacks.rb:101:in `run_callbacks'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/callbacks.rb:26:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] railties (6.0.2.1) lib/rails/rack/logger.rb:38:in `call_app'
[d939ca07-6d06-49f0-a26e-858d387244d4] railties (6.0.2.1) lib/rails/rack/logger.rb:26:in `block in call'
[d939ca07-6d06-49f0-a26e-858d387244d4] activesupport (6.0.2.1) lib/active_support/tagged_logging.rb:80:in `block in tagged'
[d939ca07-6d06-49f0-a26e-858d387244d4] activesupport (6.0.2.1) lib/active_support/tagged_logging.rb:28:in `tagged'
[d939ca07-6d06-49f0-a26e-858d387244d4] activesupport (6.0.2.1) lib/active_support/tagged_logging.rb:80:in `tagged'
[d939ca07-6d06-49f0-a26e-858d387244d4] railties (6.0.2.1) lib/rails/rack/logger.rb:26:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] feedmob-ahoy (4a0807c1c2c3) lib/ahoy/engine.rb:20:in `call_with_quiet_ahoy'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] request_store (1.5.0) lib/request_store/middleware.rb:19:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/request_id.rb:27:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/method_override.rb:24:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/runtime.rb:22:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] activesupport (6.0.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/executor.rb:14:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/static.rb:126:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] rack (2.2.2) lib/rack/sendfile.rb:110:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] actionpack (6.0.2.1) lib/action_dispatch/middleware/host_authorization.rb:77:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] sentry-raven (2.13.0) lib/raven/integrations/rack.rb:51:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] elastic-apm (3.5.0) lib/elastic_apm/middleware.rb:19:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] railties (6.0.2.1) lib/rails/engine.rb:526:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] puma (3.12.2) lib/puma/configuration.rb:227:in `call'
[d939ca07-6d06-49f0-a26e-858d387244d4] puma (3.12.2) lib/puma/server.rb:674:in `handle_request'
[d939ca07-6d06-49f0-a26e-858d387244d4] puma (3.12.2) lib/puma/server.rb:476:in `process_client'
[d939ca07-6d06-49f0-a26e-858d387244d4] puma (3.12.2) lib/puma/server.rb:334:in `block in run'
[d939ca07-6d06-49f0-a26e-858d387244d4] puma (3.12.2) lib/puma/thread_pool.rb:135:in `block in spawn_thread'
I, [2020-12-12T05:49:12.674045 #28849]  INFO -- : Sending event ce0d31e86e664d35baf24b7c772f8183 to Sentry

想请问下大家，线上环境报错 500 的可能原因是什么呢？谢谢大家～

个人项目第三版：Rails API + Vue.js，欢迎大家体验

Sylor-huang — Wed, 07 Oct 2020 23:36:35 +0800

在第二版上线后，就想着要做第三版的改版，经过大半年的业余时间的摸索（主要是 vuejs 得从头开始学），终于上线了第三版。欢迎大家体验并留下宝贵的建议～

新增了：

话题交流栏目
翻译计划，自定义翻译计划，可以邀请用户加入，一起在线翻译
暗黑主题
私信的及时通讯

Rails 使用的一些 Gem:

ruby '2.7.0'
gem 'rails', '~> 6.0', '>= 6.0.2.2'
# gem 'mysql2', '~> 0.5.3'
#postgresql 
gem 'pg', '~> 1.2', '>= 1.2.3'
#postgresql 搜索
gem 'pg_search', '~> 2.3', '>= 2.3.3'
#pg 中文分词
gem 'jieba_rb'
gem 'puma', '~> 4.1'
gem 'jbuilder', '~> 2.10'
gem 'bcrypt', '~> 3.1.7'
gem 'friendly_id', '~> 5.3'
gem 'pagy', '~> 3.7', '>= 3.7.3'  #分页
gem 'chinese_pinyin'
# gem 'searchkick', '~> 4.3' #搜索
#用户图像
gem 'letter_avatar', '~> 0.3.6'
gem 'foreman'
gem 'bootsnap', '~> 1.4', '>= 1.4.8'
gem 'rack-cors'
gem 'action-store', '~> 0.4.4'
gem 'jwt_sessions', '~> 2.4', '>= 2.4.3'
#异步，队列及可视化
gem 'sidekiq', '~> 6.0', '>= 6.0.4'
# gem 'sinatra', '~> 2.0', '>= 2.0.7' 
gem 'redis-rails', '~> 5.0', '>= 5.0.2'
#敏感词汇
gem 'harmonious_dictionary', '~> 0.0.1'
#快速批量插入
# gem 'bulk_insert', '~> 1.8', '>= 1.8.1'
#保存用户的改删记录
gem 'audited', '~> 4.9'
#常用参数设置
gem 'rails-settings-cached', '~> 2.2'
#上传图片
gem 'carrierwave', '~> 2.1'
gem 'carrierwave-qiniu', '~> 1.2', '>= 1.2.2'
gem 'whenever', '~> 0.9.4'
#树形结构，如多级评论
gem 'ancestry', '~> 3.0', '>= 3.0.7'
#按时间搜索
gem 'groupdate', '~> 5.0'
# 根据ip寻找位置
gem 'seventeen_mon'
#七牛
gem 'qiniu', '~> 6.9'
#搜索
gem 'ransack', '~> 2.3', '>= 2.3.2'
#通知系统
gem 'notifications', '~> 1.0'
# 简化状态
gem 'enumerize', '~> 2.3', '>= 2.3.1'
#支付宝
gem 'alipay', '~> 0.15.1'
#第三方登录
gem 'omniauth', '~> 1.9', '>= 1.9.1'
gem 'omniauth-oauth2', '~> 1.6'
gem 'omniauth-github', '~> 1.4'
gem 'omniauth-stackexchange', git: 'https://github.com/nashby/omniauth-stackexchange.git'

Vuejs 使用的一些主要插件：

"actioncable-vue": "^2.3.0",   #及时通讯
 "echarts": "^4.8.0",   #图表
 "mavon-editor": "^2.7.7",   #编辑器
 "qrcodejs2": "^0.0.2",   #二维码
 "view-design": "^4.2.0",   #vuejs的前端模板
 "vue-at": "^2.5.0-beta.2",   #at 用户
 "vue-clipboard2": "^0.3.1",   #复制代码
 "vue-cropper": "^0.5.4",   #图片裁剪
 "vue-i18n": "^8.15.3",   #国际化
 "vue-lazyload": "^1.3.3",   #图片懒加载
 "vue-meta": "^2.3.2",   #自定义 meta信息
 "vue-scrollto": "^2.18.1",   # 滚动
 "vue-social-share": "^0.0.3",  #社会化分享

部分截图

Rails Api + Vuejs 使用 docker 部署，点击链接可以访问，页面刷新 nginx 报错 502

Sylor-huang — Mon, 05 Oct 2020 11:51:22 +0800

Rails 提供后端 api，默认端口为 3002

vuejs 编写前端部署采用 puma + nginx + docker

现在使用 docker 部署到阿里云后，配置了 nginx，点击相应的链接可以访问页面，但是刷新该页面，会报错 502:

2020/10/05 03:45:31 [error] 8202#8202: *137 connect() to unix:/home/udasker/udaskweb/tmp/sockets/puma.sock failed (111: Connection refused) while connecting to upstream, client: 185.191.171.23, server: www.udask.net, request: "GET /robots.txt HTTP/1.1", upstream: "http://unix:/home/udasker/udaskweb/tmp/sockets/puma.sock:/50x.html", host: "www.udask.net"

nginx 配置：

user user_name;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
  worker_connections 1024;
  # multi_accept on;
}
http {
      upstream app {
       server unix:/home/udasker/udaskweb/tmp/sockets/puma.sock;
      }
     server {
        listen 443 ssl;
        server_name www.udask.net udask.net;
        ssl on;
        ssl_certificate /etc/nginx/cert/udask.pem;
        ssl_certificate_key /etc/nginx/cert/udask.key;
        ssl_session_timeout 5m;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers d...;
        ssl_prefer_server_ciphers on;
        root   /home/udasker/udaskweb/front_web/dist;   #这里是vuejs的build文件
        try_files $uri/index.html $uri @app;
        location ~ ^/api/ {
                set $backend "127.0.0.1";
                proxy_pass http://$backend:3002;    #后端rails服务 使用3002端口
                proxy_set_header Real-IP       $remote_addr;
                proxy_set_header Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header NginX-Proxy   true;
                proxy_redirect off;
            }
        location @app {
            proxy_pass http://app;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header Host $http_host;
            proxy_redirect off;
            root   /home/udasker/udaskweb/front_web/dist;
            autoindex_exact_size on;
            autoindex_localtime on;
            proxy_read_timeout 240s;
        }      

}
server {
    listen 80;
    server_name  www.udask.net udask.net;
    rewrite ^(.*)$ https://$host$1 permanent;
}

}

以上 nginx 配置哪里出现问题了呢？请大家指导，非常感谢～

搜索页面，如果只检索标题，需要使用 ElasticSearch 的吗？

Sylor-huang — Wed, 23 Sep 2020 10:22:05 +0800

我现在有个阿里云服务器，2 核 4g，固定带宽 3M。

目前在上面部署的 Rails 项目使用了 mysql 和 Elasticsearch，检索了全文。

前段时间，我看到了 RubyChina 是替换掉了 Elasticsearch，使用 postgresql 的全文搜索。(翻不到对应的文章链接了...）

我现在不想检索全文了，只想搜索匹配的标题，（有个栏目会搜索内容，但是内容长度限定在 500 字内）。

目前网站还是在测试，流量和内容不是很大。

我想请教下大家，如果在流量或者内容数据不大的情况下（比如每天的 IP 500-1000，表数据 10000-50000 行等）

我使用 ransack 这个 gem 可以的吗（性能，稳定性等，目前少量的内容，看着搜索还是挺快的）？
如果为了以后减少改动，使用 Rubychina 这样的 postgresql 全文检索，从 mysql 切换到 postgresql，学习成本高的吗？

感谢大家～

反馈下发现的 2 个小问题

Sylor-huang — Mon, 06 Jul 2020 21:58:09 +0800

有 2 个问题反馈下：

ps: 第一个不知道是不是算 bug

1. 当我发布了一个话题后，我再发布新的话题时，里面的内容还是为上一个话题的内容，这个时候应该要把内容清空吧？

2 . 当标题过长时，应该要省略部分的内容吧？

rails-settings-cached 通过 api 创建 setting 后，不能直接根据 Setting.var 获取到值

Sylor-huang — Mon, 06 Jul 2020 21:43:25 +0800

Rails版本：6.0.2.2

Ruby版本：2.7.0p0

gem 'rails-settings-cached', '~> 2.2'

通过 field 在 setting.rb 里设置参数是可以通过 Setting.var 获取到正确的值：

# setting.rb
...
cache_prefix { "setting_cache" }
field :check_hour, default: 12, type: :integer
...

2.7.0 :001 > Setting.check_hour
=> 12

当我通过settings_controller.rb来创建值后，在 rails 缓存里有该字段，但是不能通过Setting.var 获取到值

# settings_controller.rb
class Admins::SettingsController < Admins::AdminsController

  def create
    setting = Setting.new(setting_params)
    if setting.save
      tip_status(1, "创建成功")
    else
      tip_status(-1, "创建失败")
    end
  end

  private

  def setting_params
    params.require(:setting).permit(:var, :value)
  end

end

# 新增hello记录后，在cache里可以查到该记录
2.7.0 :003 > Rails.cache.fetch("rails-settings-cached/setting_cache")
=> {"check_hour"=>12, "hello"=>"good"}

# 通过Setting.var，会出现报错
2.7.0 :004 > Setting.hello
NoMethodError (undefined method `hello' for #<Class:0x00007fe59ded68d8>)

请问各位大佬，我这是哪里有问题呢？该怎么解决呢？非常感谢～～

个人练手项目第二版，欢迎大家指点

Sylor-huang — Mon, 13 Jan 2020 22:13:50 +0800

在第一版上线后（https://ruby-china.org/topics/38370Ruby），找了份 on Rails 的工作。在工作之余的周末和晚上，断断续续的优化了下第一版的项目。但是目前看来第二版还是有很多值得改进的地方。下一步准备用 Rails 提供 api，用 Vue.js 写前端。

第二版地址：https://www.udask.net

网站服务器使用：阿里云，（服务器是 2 核 4g 的，双十一购买的，799 元/3 年；网站现在加载页面均需要 2 秒以上，还有很多可以优化的地方）

文件存储为：七牛云，

支付方式为：支付宝，采用的是@Rei 大佬的 gem 包 alipay。 (支付暂时还有点问题，return_url 没有生效，有时间再检查下）

其他的一些 gem 包：

gem 'bootstrap-sass', '~> 3.3.7',  #网站的前端
gem 'rails', '~> 5.2',  #Rails版本
gem 'mysql2', '>= 0.3.13', '< 0.5',    #数据库
gem 'kaminari'  #分页
gem 'puma'   #使用的部署服务
gem 'sidekiq', '~> 6.0', '>= 6.0.4'  #异步通知的
gem 'redis-rails'   #redis缓存的
gem 'action-store'  #关注、收藏、点赞、反对等采用， @huacnlee 大佬的力作
gem 'carrierwave', '~> 1.2', '>= 1.2.2'   #文件上传、裁剪
gem 'carrierwave-qiniu', '~> 1.1', '>= 1.1.5'   #文件上传、裁剪
cropper.js   #js文件，不是gem包，
gem 'searchkick', '~> 3.1', '>= 3.1.2',   #搜索采用该gem包+ elasticsearch + ik中文分词
gem 'letter_avatar', '~> 0.3.6'   #用户默认图像
gem 'notifications', '~> 0.6.0'   #用户通知系统， @huacnlee 大佬的又一力作
gem 'jquery-atwho-rails', '~> 1.5', '>= 1.5.4'  #@ 用户的，类似于RubyChina的 @ 功能
gem 'friendly_id', '~> 5.2', '>= 5.2.4'  #可以设置默认的路由id为自定义的字符串
gem 'chinese_pinyin'  # 修改中文为拼音的， 配合上面的friendly_id使用的
gem 'wicked_pdf', '~> 1.4'   #下载pdf
gem 'wkhtmltopdf-binary', '~> 0.12.4'  #下载pdf
gem 'seventeen_mon'   #根据ip定位，好像不是很准确
gem 'rails-settings-cached', '~> 2.1', '>= 2.1.1'   #常用参数的设置，还是@huacnlee 大佬的力作
gem 'caxlsx', '~> 3.0', '>= 3.0.1'  #导出excel
gem 'axlsx_rails', '~> 0.6.0'  #导出excel
gem 'whenever', '~> 1.0'   #定时任务
gem 'font-awesome-rails'   #icon图标
gem 'activeadmin', '~> 1.4', '>= 1.4.3'  #后台管理，其实感觉不好用，下一版准备单独写个管理员页面，不用gem包
gem 'arctic_admin', '~> 1.5', '>= 1.5.2'  #后天管理的前端UI
gem 'devise', '~> 4.5'   #主要是管理员页面的验证
gem 'redcarpet', '~> 3.4'
gem 'social-share-button' #分享功能
gem 'groupdate', '~> 4.1', '>= 4.1.1'  #根据时间筛选的
gem 'chartkick', '~> 3.0', '>= 3.0.2'  #图表功能
#第三方绑定、登录使用：
gem 'omniauth', '~> 1.9'
gem 'omniauth-oauth2', '~> 1.6'
gem 'omniauth-github', '~> 1.3'
gem 'omniauth-stackexchange', git: 'https://github.com/nashby/omniauth-stackexchange.git'

部分网页截图：

首页

标签页

个人主页（个人页面参考了下知乎的部分设计...)

注册

Docker+Rails5+Puma+Nginx 本地部署时，出现错误：bash: bundle: command not found

Sylor-huang — Sat, 23 Nov 2019 21:46:44 +0800

我现在用的环境是： Ruby 2.5.1,Rails-5.2.4, mysql 5.7, 当我在本地练习docker部署时，出现了错误，导致 docker 的 web，app，和 mysql 都没启动，麻烦大家帮我看下，非常感谢。

错误日志：

Starting marine_drug_db_1 ... done
Recreating marine_drug_app_1 ... done
Recreating marine_drug_web_1 ... done
Attaching to marine_drug_db_1, marine_drug_app_1, marine_drug_web_1
db_1   | 2019-11-23 12:07:03+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.28-1debian9 started.
db_1   | 2019-11-23 12:07:03+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
app_1  | Puma starting in single mode...
app_1  | * Version 4.3.0 (ruby 2.5.1-p57), codename: Mysterious Traveller
app_1  | * Min threads: 5, max threads: 5
web_1  | bash: bundle: command not found   #这里报错
db_1   | 2019-11-23 12:07:03+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.28-1debian9 started.
app_1  | * Environment: development
db_1   | 2019-11-23 12:07:03+00:00 [Note] [Entrypoint]: Initializing database files
db_1   | 2019-11-23T12:07:03.544450Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
db_1   | 2019-11-23T12:07:03.546435Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.   #这里报错
db_1   | 2019-11-23T12:07:03.546500Z 0 [ERROR] Aborting
marine_drug_db_1 exited with code 1
app_1  | * Listening on tcp://0.0.0.0:3000
app_1  | Errno::ENOENT: No such file or directory - connect(2) for /marine_drug/tmp/sockets/puma.sock
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:327:in `initialize'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:327:in `new'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:327:in `add_unix_listener'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:151:in `block in parse'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:90:in `each'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/binder.rb:90:in `parse'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/runner.rb:161:in `load_and_bind'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/single.rb:98:in `run'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/launcher.rb:172:in `run'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/lib/puma/cli.rb:80:in `run'
app_1  |   /usr/local/bundle/gems/puma-4.3.0/bin/puma:10:in `<top (required)>'
app_1  |   /usr/local/bundle/bin/puma:23:in `load'
app_1  |   /usr/local/bundle/bin/puma:23:in `<top (required)>'
app_1  | bundler: failed to load command: puma (/usr/local/bundle/bin/puma)   #这里报错
marine_drug_web_1 exited with code 127
marine_drug_app_1 exited with code 1

puma.rb:

threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }.to_i
threads threads_count, threads_count
port        ENV.fetch("PORT") { 3000 }
environment ENV.fetch("RAILS_ENV") { "development" }
plugin :tmp_restart

app_root = File.expand_path("../..", __FILE__)
bind "unix://#{app_root}/tmp/sockets/puma.sock"

stdout_redirect "#{app_root}/log/puma.stdout.log", "#{app_root}/log/puma.stderr.log", true

nginx.conf:

upstream marine_drug {

   server unix://$RAILS_ROOT/tmp/sockets/puma.sock;
}

server {
   listen 80;
   # define your domain or IP
   server_name localhost;

   # define the public application root
   root   $RAILS_ROOT/public;
   index  index.html;

   # define where Nginx should write its logs
   access_log $RAILS_ROOT/log/nginx.access.log;
   error_log $RAILS_ROOT/log/nginx.error.log;

   # deny requests for files that should never be accessed
   location ~ /\. {
      deny all;
   }

   location ~* ^.+\.(rb|log)$ {
      deny all;
   }

   # serve static (compiled) assets directly if they exist (for rails production)
   location ~ ^/(assets|images|javascripts|stylesheets|swfs|system)/   {

      try_files $uri @rails;
      # close access log
      access_log off;
      # to serve pre-gzipped version
      gzip_static on;

      expires max;
      add_header Cache-Control public;

      add_header Last-Modified "";
      add_header ETag "";
      break;
   }

   # send non-static file requests to the app server
   location / {
      try_files $uri @rails;
   }

   location @rails {
      internal; 
      proxy_set_header  X-Real-IP  $remote_addr;
      proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
      proxy_pass http://rails_app; 
   }
}

Dockerfile:

FROM ruby:2.5.1
RUN  sed -i s@/archive.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list
RUN  apt-get clean

RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
RUN apt-get install -y imagemagick
RUN apt-get install -y vim
ENV RAILS_ROOT /marine_drug
RUN mkdir -p $RAILS_ROOT
RUN mkdir -p $RAILS_ROOT/tmp/pids
RUN mkdir -p $RAILS_ROOT/tmp/sockets
WORKDIR $RAILS_ROOT

COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock

RUN gem install bundler
RUN bundler install
RUN bundle install

COPY . .

RUN bundle exec rake RAILS_ENV=$RAILS_ENV assets:precompile
EXPOSE 3000

Nginx 的 Dockerfile:

FROM ruby:2.5.1
RUN  sed -i s@/archive.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list
RUN  apt-get clean

RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
RUN apt-get install -y imagemagick
RUN apt-get install -y vim
ENV RAILS_ROOT /marine_drug
RUN mkdir -p $RAILS_ROOT
RUN mkdir -p $RAILS_ROOT/tmp/pids
RUN mkdir -p $RAILS_ROOT/tmp/sockets
WORKDIR $RAILS_ROOT

COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock

RUN gem install bundler
RUN bundler install
RUN bundle install

COPY . .

RUN bundle exec rake RAILS_ENV=$RAILS_ENV assets:precompile
EXPOSE 3000

docker-compose.yml:

version: '3'
services:
  app:
    build:
      context: .
    env_file:
      - ./environments/db.env
    command: bundle exec puma -C config/puma.rb
    volumes:
      - .:/marine_drug
      - public-data:/marine_drug/public
      - tmp-data:/marine_drug/tmp
      - log-data:/marine_drug/log
    depends_on:
      - db
  db:
    image: mysql:5.7
    env_file:
      - ./environments/db.env
    volumes:
      - ./tmp/db:/var/lib/mysql/data
    command: --innodb-use-native-aio=0
  web:
    build:
      context: .
      dockerfile: containers/nginx/Dockerfile
    command: bash -c "rm -f tmp/pids/server.pid && RAILS_ENV=development bundle exec rails s -p 3000 -b '0.0.0.0'"
    ports:
      - 80:80
      - 443:443
    depends_on:
      - app
volumes:
  public-data:
  tmp-data:
  log-data:
  db-data:

网上查询了好长时间，但是按照网上说的，添加sockets文件夹，但这好像没有成功。麻烦大家帮我指点下，非常感谢。

Rails + MySQL 的个人练手项目，请大家多多指点！

Sylor-huang — Tue, 09 Apr 2019 21:02:48 +0800

历时一年，从一窍不通到慢慢摸索，独立完成的 Rails 练手项目，中间碰到过许许多多的问题，在此先感谢论坛的各位前辈的指点。

网站测试版地址：https://www.udask.cn/

网站采用响应式布局，PC 端和移动端均可访问，但布局有所区别。

网站服务器使用：阿里云，文件存储为：七牛云

以下是本网站使用的一些 gem

网站的前端使用： gem 'bootstrap-sass', '~> 3.3.7',

后端使用： gem 'rails', '~> 5.2',

数据库采用： gem 'mysql2', '>= 0.3.13', '< 0.5',

分页插件采用： gem 'kaminari'

关注、收藏、点赞、反对等采用： gem 'action-store'

文件上传、裁剪使用：

gem 'carrierwave', '~> 1.2', '>= 1.2.2'

gem 'carrierwave-qiniu', '~> 1.1', '>= 1.1.5'

cropper.js

搜索采用： gem 'searchkick', '~> 3.1', '>= 3.1.2', 中文分词使用 IK 插件

用户默认图像使用： gem 'letter_avatar', '~> 0.3.6'

用户通知系统使用： gem 'notifications', '~> 0.6.0'

网站图标使用： gem 'font-awesome-rails'

后台管理使用： gem 'activeadmin', '~> 1.4', '>= 1.4.3'

gem 'arctic_admin', '~> 1.5', '>= 1.5.2'

gem 'devise', '~> 4.5'

markdown 使用：

gem 'redcarpet', '~> 3.4'

gem 'coderay', '~> 1.1', '>= 1.1.2'

分享功能使用：gem 'social-share-button'

第三方绑定、登录使用：

gem 'omniauth', '~> 1.9'

gem 'omniauth-oauth2', '~> 1.6'

gem 'omniauth-github', '~> 1.3'

gem 'omniauth-linkedin-oauth2', '~> 1.0'

gem 'omniauth-qq', '~> 0.3.0'

gem 'omniauth-stackexchange', git: 'https://github.com/nashby/omniauth-stackexchange.git'

网站的一些页面

网站首页显示：

网站登录页面：

网站注册页面：

网站标签页面：

markdown 输入框：

网站功能页面：

欢迎大伙提意见、提 Bug，非常感谢！

[求助] 第三方网站 post 请求本网站，出现 Can't verify CSRF token authenticity 错误。

Sylor-huang — Wed, 13 Mar 2019 00:11:35 +0800

我现在用的是第三方收款软件，就是监控手机收款提示，然后，post 数据到我的服务器，我根据 post 回来的数据判断是否成功支付。

但是我现在碰到的问题是，post 到我的方法时，不带authenticity_token,一直出现错误：Can't verify CSRF token authenticity.

我的 post method：

class FundsController < ApplicationController

  def success_recharge   #method post
    @r_user = User.find_by_id(params[:order_uid])
    return_array = params[:aoid] +params[:order_id]+params[:order_uid]+params[:price]+params[:pay_price]+'1c9a3e0eba564d68831bbeefb2ae5f72'   #第三方返回的数据
    sign = make_md5_string(return_array)
    if sign == params[:sign] 
      respond_to do |format|
        format.html {
          redirect_to funds_user_path(@r_user)
          flash[:success] = "充值成功"
        }
        format.json{
          render json: {status: :ok}
        }
      end
    else
      redirect_to funds_user_path(@r_user)
      flash[:danger] = "充值失败,#{check_s[:status]}"
    end
  end

end

我的users_controller.rb:

class UsersController < ApplicationController
  before_action :logged_in_user

  def funds

  end

end

logged_in_user 方法：

module SessionsHelper
  def logged_in_user
    unless logged?
      store_location
      flash[:danger] = "请先登录"
      redirect_to login_path
    end
  end

end

如果在FundsController中添加skip_before_action :verify_authenticity_token, :only => [:success_recharge]，那就不能redirect_to到 funds_user_path(@r_user),而是到login_path,

请问大家，我该怎么修改。非常感谢~~~!

[求助] rails 项目背景图片：background:url () 在阿里云服务器上不能显示出来？

Sylor-huang — Sat, 26 Jan 2019 22:45:33 +0800

图片在app/assets/images 文件夹下。

css 文件在app/assets/stylesheets文件夹下。

背景图片 css 如下

.loginBox{
  background: url("../assets/login_bg.png") no-repeat center;

  background-size: cover;
}

我把项目部署在阿里云上后，在 chrome 的审查元素下发现调用的路径为 css，图片不能正确显示：

Host: www.xxxx.com
Referer: https://www.xxxx.com/assets/application-846c3d1ba38908834ae2d2f7e5806fee3121c960b3ca98014b133c815c42dba4.css

但是当我在本地的时候，同样的路径，是可以正确显示的，但审查元素时，调用路径有点区别：

Host: 127.0.0.1:3000
If-None-Match: "5f0033f9ebd5af371ec277291421e1b28036dc04b284f4d87b0d839ca60a89a0"
Referer: http://127.0.0.1:3000/assets/application.self-e000278a056ed6286cefac71cf6ac663d225c1c4eb315c88e2f37fc00426aee5.css?body=1

请问大家，我该怎么修改才可以在阿里云上正确显示？非常感谢。

[求助] Rails 怎么在评论中 @ 用户时，只显示当前页面的全部用户，并通过后台获取用户的其他信息？

Sylor-huang — Sun, 30 Sep 2018 22:49:57 +0800

如题，我的是 Rails 5.2，并调用的时 @ichord 大神的 at.js。现在，我能获取全部的当前用户，但是我不能通过后台获取用户的一些信息，并显示出来。

Rails 代码

## users_controller.rb
 def mentions
    respond_to do |format|
      format.json { render :json => Mention.all(params[:q]) }
    end
  end


## routes.rb

get 'mentions', to: 'users#mentions'


## mentions.rb 

class Mention
  attr_reader :mentionable
  include Rails.application.routes.url_helpers

  def self.all(letters)
    return Mention.none unless letters.present?
    users = User.limit(5).where('name LIKE ?', "#{letters}%").compact
    users.map do |user|
      { name: user.name, img: user.picture.nil? ? "images/default_member.png" : user.picture.url, name_before: user.name_before ? user.name_before : "" }
    end
  end

  def self.create_from_text(post)
    potential_matches = post.content.scan(/@\w+/i)
    potential_matches.uniq.map do |match|
      mention = Mention.create_from_match(match)
      next unless mention
      post.update_attributes(content: mention.markdown_string(post.content))
      # You could fire an email to the user here with ActionMailer
      mention
    end.compact
  end

  def self.create_from_match(match)
    user = User.find_by(name: match.delete('@'))
    UserMention.new(user) if user.present?
  end

  def initialize(mentionable)
    @mentionable = mentionable
  end

  class UserMention < Mention
    def markdown_string(text)
      host = Rails.env.development? ? 'localhost:3000' : '' # add your app's host here!
      text.gsub(/@#{mentionable.name}/i,
                "[**@#{mentionable.name}**]("")")
    end
  end
end


##  comments_controller.rb

def new
    @comment = Comment.new
    Mention.create_from_text(self)
  end

js 代码


## markdown.js


## 获取当前页面的全部用户，并去重。
function logins(){
        let uName = [];
        $("a.username").each(function () {
            uName.push($(this).text());
        });
        return $.unique(uName);
    }


### 调用atwho功能。
    function mentionable(logins){
        if(logins.length > 0){
            $("textarea").atwho({
                at: '@',
                limit: 8,
                callbacks:{
                    remoteFilter: function (query,callback) {
                        if(query.length < 1){
                            return false;
                        }else{
                            $.getJSON('/mentions',{q:query},function(data){
                                console.log(data)
                                callback(data);
                            });
                        }
                    }
                },
                'data':'/mentions',
                displayTpl: "<li data-value='@${name}'><img src='${img}' height='20' width='20' style='border-radius: 20px'/><span class='mlr5'>${name}</span> <small>${name_before}</small></li>",
            });
        }else{
            console.log("无内容");
        }
    }

    mentionable(logins());

请问下路过的各位大神，我按上述代码，当我在评论框，输入@时，提示错误信息如下，并且没有用户下拉框，但是在@后，输入字符，可以查询的到用户信息。

Completed 500 Internal Server Error in 9ms (ActiveRecord: 1.1ms)
NoMethodError - undefined method `none' for Mention:Class:
  app/models/mention.rb:6:in `all'
  app/controllers/users_controller.rb:73:in `block (2 levels) in mentions'
  app/controllers/users_controller.rb:72:in `mentions'

[求助] Rails 5 上传文件后，验证的错误信息怎么在 ajax 中显示?

Sylor-huang — Fri, 28 Sep 2018 00:35:01 +0800

我用的是 Rails 5 和 carrierwave 上传文件。如果文件上传成功的话，Ajax 可以显示相关信息；但是文件上传失败的话，返回的错误信息不能再 Ajax 中显示。

以下为相关代码：

## documents_controller.rb

def create
    # 浮动窗口上传
    @document = Document.new(document_params)
    @document.file_name = params[:file]
    @document.user_id = current_user.id
    respond_to do |format|
      if @document.save
        format.json {render json: { id:@document.id }}
      else
        format.json { render :json => { :error => @document.errors }, status: :unprocessable_entity}
      end
    end
  end


## document.rb

class Document < ApplicationRecord
  belongs_to :user, optional: true
  before_validation :set_documents_attributes
  validate :file_extension
  validates_uniqueness_of :md5hash, :on => :create,message: "文件已存在！"
  validates_presence_of :file_name,message: "上传文件名不能为空！"
  validate :check_file_size
  mount_uploader :file_name, ImageUploader

  private
  def file_extension
    file_extension = file_name.file.extension.downcase
    errors.add(:file_name, "文件类型错误,仅支持文档类型!") unless %w(rtf pdf doc docx xls xlsx html txt epub mobi rar zip 7z ppt wps gz pptx chm htm).include?(file_extension)
  end

  def check_file_size
    errors.add(:file_size, "文件不能大于200M.") if self.file_size > 200.megabytes
  end

  def set_documents_attributes
    if file_name.present? && file_name_changed?
      self.file_type = file_name.file.content_type
      self.file_size = file_name.file.size
      self.md5hash = Digest::MD5.hexdigest(self.file_name.read)
    end
  end
end

点击上传的按钮

<%= file_field_tag :document, id: "uploadFiles" %>

上传的 Js 内容

let localFileUpload = $("#uploadFiles");
    localFileUpload.on("change",function () {
        let formData = new FormData();
        formData.append("file",localFileUpload[0].files[0]);
        let document_name = localFileUpload[0].files[0].name;
        let document_status = $("div.uploadStatus");
        let document_attr = document_name.split('.').pop();
        let document_ext = document_name.substr(0, document_name.lastIndexOf('.'));
        let type_array = ['pdf','rtf', 'doc', 'docx', 'xls', 'xlsx', 'html', 'txt', 'epub', 'mobi', 'rar', 'zip', '7z', 'ppt', 'wps', 'gz', 'pptx', 'chm', 'htm'];
        if($.inArray(document_attr,type_array) === -1){
            document_status.removeClass('hide').html("<span class='text-red'>文件格式错误,仅支持文档格式！</span>");
        }else{
            $.ajax({
                url : '/documents',
                type: "POST",
                data: formData,
                dataType: "JSON",
                processData: false,
                contentType: false,
                xhr:function(){
                    let myXhr = $.ajaxSettings.xhr();
                    if(myXhr.upload){
                        myXhr.upload.addEventListener('progress',function(e){
                            let loaded = e.loaded;                  //已经上传大小情况
                            let total = e.total;                      //附件总大小
                            let percent = Math.floor(100*loaded/total)+"%";     //已经上传的百分比
                            let fileSize = (total / Math.pow(1000, 2)).toFixed(1) + ' M';
                            localFileUpload.parent("div.localUploadForm").css({"opacity":"0.5","cursor":"not-allowed"});
                            localFileUpload.attr("disabled",true);
                            document_status.removeClass("hide");
                            $(".uploadFileType").html(document_attr);
                            $(".uploadFileSize").html(fileSize);
                            $(".processPercent").html(percent);
                            $(".processBar").css("width",percent);
                            $("input[data-type='attachment_type']").val(document_attr);
                            $("input[data-size='attachment_size").val(fileSize);
                            $("input[data-alt='attachment_title']").attr("disabled",true);
                        }, false);
                    }
                    return myXhr;
                },
                success: function (res) {
                    $("input[data-alt='attachment_title']").attr("disabled",false).val(document_ext);
                    let delete_html = "<a data-method='delete' href='/documents/" + res.id +
                        "' data-confirm='确认删除上传的文件吗？'><i class='fa fa-trash mr2 fa-fw'></i>删除</a>";
                    $("span.uploadFileDelete").html(delete_html);
                    $(".uploadFileSuccess").html("上传成功");
                    $("input[data-attachment='attachment_url").val(res.id);
                },
                error: function (res) {
                    for(let message of res.error){
                         console.log(res.error[message]);
                     }
                }
            });
        }
    });

当文件上传失败时，Ajax 中 error 不能获得documents_controller.rb中返回的 json 错误信息，上传成功时，可以获得 json 的信息。请问我该怎么修改？非常感谢！

[求助] Rails 上传文件到七牛云存储后，怎么再下载到本地？

Sylor-huang — Mon, 24 Sep 2018 21:21:53 +0800

我用 Rails 5.2 和 carrierwave-qiniu

现在我可以通过 carrierwave-qiniu 上传文件到服务器，但是我下载时，提示：

Cannot read file http://pczd3l6pu.bkt.clouddn.com/document/129/railsguides-5.0.2.1.pdf,

完整错误内容为：

Processing by DocumentsController#download as HTML
  Parameters: {"id"=>"129"}
  User Load (0.3ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 2 LIMIT 1
  Document Load (0.3ms)  SELECT  `documents`.* FROM `documents` WHERE `documents`.`id` = 129 LIMIT 1
Sent file http://pczd3l6pu.bkt.clouddn.com/document/129/railsguides-5.0.2.1.pdf (0.3ms)
Completed 500 Internal Server Error in 4ms (ActiveRecord: 0.7ms)



ActionController::MissingFile - Cannot read file http://pczd3l6pu.bkt.clouddn.com/document/129/railsguides-5.0.2.1.pdf:
  app/controllers/documents_controller.rb:35:in `download'

但是单独访问上述链接，是可以在线浏览文件的。

我的 document_controllers 如下：

def create

  @document = Document.new
  @document.file_name = params[:file]
  if @document.file_name.blank?
    render json: { ok: false }, status: 400
    return
  end

  @document.user_id = current_user.id
  if @document.save
    render json: { url: @document.file_name.url, id:@document.id }
  else
    flash[:warning] = "文件上传失败"
  end
end

def destroy
  @document = Document.find(params[:id])
  @document.destroy
  redirect_to session[:back_path].pop
  flash[:success] = '文件已删除，请重新上传'
end

def download
  @document = Document.find(params[:id])
  response.headers['Content-Type'] = "application/octet-stream"
  response.headers['Content-Disposition'] = "attachment; filename=#{@document.file_name}"
  response.headers['Cache-Control'] =  "private"
  response.headers['X-Accel-Redirect'] = @document.file_name.url
  send_file(@document.file_name.url, disposition: 'attachment')
end

document的表内容：

def change
    create_table :documents do |t|
      t.string :file_name
      t.string :file_type
      t.integer :user_id

      t.timestamps
    end
    add_index :documents, [:user_id, :created_at]
  end

routes.rb如下：

resources :documents, only: [:create,:destroy] do
    member do
      get :download
    end
  end

请问，我该怎么下载远程文件呢？非常感谢。

[求助] notifications 不能用 kaminari 分页？

Sylor-huang — Sun, 02 Sep 2018 20:44:12 +0800

我用的是：

gem 'rails', '~> 5.2'
gem 'notifications', '~> 0.6.0'
gem 'kaminari'

我的 notifications_controller.rb:

# notifications_controller.rb

module Notifications
  class NotificationsController < Notifications::ApplicationController
    def index
      @notifications = notifications.includes(:actor).order("id desc").page(params[:page])
      unread_ids = @notifications.reject(&:read?).select(&:id)
      Notification.read!(unread_ids)
      @notification_groups = @notifications.group_by { |note| note.created_at.to_date }
    end

    def clean
      notifications.delete_all
      redirect_to notifications_path
    end

    private

    def notifications
      raise "You need reqiure user login for /notifications page." unless current_user
      Notification.where(user_id: current_user.id)
    end
  end
end


# routs.tb 

mount Notifications::Engine, at: "notifications"

我的 index.html.erb:

# notifications/notifications/index.html.erb 的分页

<div class="paginationBox">
        <%= paginate @notifications,left:2,right:1,window: 1 %>
      </div>

我按照视频：https://ruby-china.org/topics/36891 做通知系统，现在别的功能都能正常实现，但是通知页面，不能分页显示。错误信息提示为：

NoMethodError - undefined method `total_pages' for #<Notification::ActiveRecord_Relation:0x00007fcfacae6dd8>:
  app/views/notifications/notifications/index.html.erb:33:in `_app_views_notifications_notifications_index_html_erb__2430601159943313679_70264929101860'

如果我修改notifications_controller.rb中index动作的 @notifications为@notifications = notifications.includes(:actor).order("id desc").page(params[:page]).per(10)也是出现同样的错误。

如果我修改通知页面的：index.html.erb为：

# notifications/notifications/index.html.erb 的分页

<div class="paginationBox">
        <%= paginate @notifications.page(params[:page]).per(10),left:2,right:1,window: 1 %>
      </div>

则不会分页显示。

请问下大家，我是哪里出现了错误，该怎么调整？谢谢大家。

[求助] Rails 5.2 多重多态怎么获取正确的 url?

Sylor-huang — Wed, 22 Aug 2018 22:12:48 +0800

如题。

我的部分代码为：


## question.rb
has_many :comments, :as => :commentable, :dependent => :destroy

## comment.rb
belongs_to :commentable, polymorphic: true
has_many :reports, :as => :reportable, :dependent => :destroy

## report.rb

belongs_to :reportable, polymorphic: true


## 路由 routes.rb

resources :questions do

  resources :comments do 

    resources :reports

end


## _comments.html.erb
<%= link_to "<i class='fa fa-times mr2 fa-fw'></i>Report".html_safe,new_question_comment_report_path(@question,@comment),remote: true %>

## reports_controller.rb

class ReportsController < ApplicationController
  before_action :logged_in_user
  before_action :set_reportable

  def new
    @report = @reportable.reports.new
    respond_to do |format|
      format.html do
        redirect_to @reportable
      end
      format.js
    end
  end

  def create
    @report = @reportable.reports.new report_params
    @report.reporter_id = current_user.id
    if @report.save
      redirect_to @reportable
    end
  end

  def destroy
    @report = Report.find(params[:id])
    @report.destroy
  end

  private
  def set_reportable
    if params[:comment_id]
      @question = Question.find(params[:question_id])
      @reportable = @question.comments.find(params[:comment_id])
    end
  end

  def report_params
    params.require(:report).permit(:content,:radio_content)
  end
end

## reports  new.js.erb为

$("body").append("<%= j render "reports/reports" %>")
$("#tip-offs").modal('show')


## _reports.html.erb
<div class="modal tip-offs in" id="tip-offs" >
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button class="close" data-dismiss="modal" type="button">
          <span aria-hidden="true">&times;</span> <span class="sr-only">Close</span>
        </button>
        <h4 class="modal-title">
          <span data-model="action">Report</span>
        </h4>
      </div>
      <%= form_for [@reportable,@report] do |f| %>
      <div class="modal-body">
          <div class="pbt5">
            <%= f.text_area :content,row:3, class: "form-control",placeholder: "report more" %>
          </div>
      </div>
      <div class="modal-footer">
        <button class="btn btn-default" data-dismiss="modal" type="button">Close</button>
        <%= f.submit "report",class:"btn btn-primary" %>
      </div>
        <% end %>
    </div>
    <!-- /.modal-content -->
  </div>
  <!-- /.modal-dialog -->
</div>

现在，如果在_comments.html.erb 中，new_question_comment_report_path(@question,@comment)的 url 为：/questions/6/comments/15/reports/new,

在我提交 report 时，提示错误为：

Processing by ReportsController#new as JS
  Parameters: {"question_id"=>"6", "comment_id"=>"15"}
  User Load (0.3ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
  Question Load (0.2ms)  SELECT  `questions`.* FROM `questions` WHERE `questions`.`id` = 10 LIMIT 1
  Comment Load (0.2ms)  SELECT  `comments`.* FROM `comments` WHERE `comments`.`commentable_id` = 6 AND `comments`.`commentable_type` = 'Question' AND `comments`.`id` = 15 LIMIT 1
  Rendering reports/new.js.erb
  Rendered reports/_reports.html.erb (24.4ms)
  Rendered reports/new.js.erb (25.8ms)
Completed 500 Internal Server Error in 38ms (ActiveRecord: 0.7ms)

NoMethodError - undefined method `comment_reports_path' for #<#<Class:0x00007fb020559858>:0x00007fb022d02c38>
Did you mean?  comment_like_tag:
  app/views/reports/_reports.html.erb:13:in `_app_views_reports__reports_html_erb___1071799134587169621_70197237478960'
  app/views/reports/new.js.erb:1:in `_app_views_reports_new_js_erb___4579025611719430071_70197237521140'

请问下，我是不是在 reports_controller 中的 set_reportable 有错误？如果是的话，我该怎么修改呢？非常感谢~

Rails 5.2 使用 gem action-store 后，怎么禁止在点击 “收藏” 按钮的时候，不更新时间？

Sylor-huang — Fri, 17 Aug 2018 10:48:29 +0800

我的Gemfiles是：


gem 'rails', '~> 5.2'
gem 'action-store'

其中收藏的 action

# questions_controller.rb
def star
    current_user.star_question(params[:id])
    render plain: "1"
  end

用户的模型user.rb:

action_store :star, :question, counter_cache: true, user_counter_cache: true

现在每次点击 "收藏" 按钮，Question 的updated_at 这个时间会发生变化，怎么才能禁止 updated_at 改变呢？

谢谢大家。

[求助] Rails 5.2 使用 carrierwave 上传图片，怎么在选择完图片后，自动上传？

Sylor-huang — Sun, 12 Aug 2018 15:32:46 +0800

我参考了：http://railscasts-china.com/episodes/file-uploading-by-carrierwave 这个教程来做图片上传，并使用多态表存储图片相关内容。

在这个教程里，图片上传是在 form 表单提交后，再上传图片到服务器。

我现在想要的是能不能在使用 carrierwave 选择图片后，后台自动上传到服务器？类似于 RubyChina 的 markdown 里的图片上传。

我的部分代码是：

Gemfiles:

gem 'rails', '~> 5.2'
gem 'carrierwave', '~> 1.2', '>= 1.2.2'
gem 'mini_magick'

img 模型，img.rb:

class Img < ActiveRecord::Base
  has_many :attachments, as: :attachmentable, :dependent => :destroy
end

Attachment 模型 attachment.rb:

class Attachment < ApplicationRecord
  mount_uploader :attachment, ImageUploader
  belongs_to :attachmentable, :polymorphic => true
end

控制器 imgs_controller:

class ImgsController < ApplicationController

  def index
    @imgs = Img.all
  end

  def show
    @img = Img.find(params[:id])
  end

  def new
    @img = Img.new
  end

  def create
    @img = Img.new(img_params)
    if @img.save
      Attachment.create(:attachment => params[:attachment], :attachmentable =>@img) if params[:attachment]  #这里怎么修改为form_for
      redirect_to @img
    end
  end

  def destroy
    @img = Img.find(params[:id])
    @img.destroy
    redirect_to @img
  end

  private

  def img_params
    params.require(:img).permit(:img_name)
  end
end

imgs 的 html:

# new.html.erb

<%= form_for(@img,:html => {:multipart => true}) do |f| %>
  <%= f.text_field :img_name %>
  <%= file_field_tag :attachment %>
  <%= f.submit "upload" %>
<% end %>



# show.html.erb

<% @img.attachments.each do |f| %>
  <%= image_tag f.attachment.url %>
<% end %>

按照上述代码，在new.html.erb中提交，可以上传图片，并正确显示。

但是上传图片是需要在 img 的 create 控制器中，运行： Attachment.create(:attachment => params[:attachment], :attachmentable =>@img) if params[:attachment], 才可以上传。

怎么样才能让 <%= file_field_tag :attachment %> 选择图片后，自动上传图片？

或者说：Attachment.create(:attachment => params[:attachment], :attachmentable =>@img) if params[:attachment]可以转化为 form_for 形式的吗？

比如说这样的：(这个只是例子，不能正常运行)

<%= form_for :attachments do |m| %>
  <%= m.file_field :attachment %> 
  <%= m.submit %> 
<% end %>

请路过的大佬，不吝指教，非常感谢~

参考 Homeland 的 markdown 图片上传代码，我增加了相应内容如下：

attachments 控制器：attachments_controller.rb

class AttachmentsController < ApplicationController
  def create
    @attachment = Attachment.new
    if @attachment.save
      render json: { ok: true, url: @attachment.attachment.url }
    else
      render json: { ok: false }
    end
  end
end

路由routes.rb:

resources :attachments, only:[:create]

new.html.erb点击上传按钮： <a id="editor-upload-attachment" title="上传图片" class="nav-link" href="#"><i class="fa fa-image"></i> </a>

markdown.js

let localImgUpload = $("#editor-upload-attachment");
localImgUpload.on("click",function (e) {
        e.preventDefault()
        let formData = new FormData();
        formData.append("attachment[file]",file);  ##这里的formData 该是哪些内容？
        $.ajax({
            url : '/attachments',
            type: "POST",
            data: formData,
            dataType: "JSON",
            processData: false,
            contentType: false,
            success: function (res) {
                if (res.ok === true){
                    console.log(res.url);
                }
            }
        });
    });

@Rei 因为我用的是 Jquery，所以我没看懂：https://github.com/ruby-china/homeland/blob/master/app/assets/javascripts/editor.coffee#L63 这行的 item 和 filename 的值，在直接上传的情况下是哪些值。类似于您的这行：https://github.com/getcampo/campo/blob/7d3574fcb8bf7d4c1fa63fd20f25ec4a9b714243/app/assets/javascripts/controllers/editor_controller.coffee#L10

如果在按照我那个多态上传的话，formData.append(),该怎么写呢？再次感谢 @Rei.

[求助] Rails 5 本地搭建网站，Carrierwave-upyun 不能上传图片到又拍云？

Sylor-huang — Sun, 05 Aug 2018 15:30:09 +0800

请教大家：我是在本地用 rails 搭建网站，现在想在本地能把图片上传到又拍云，网站一些代码如下。但是上传图片后，跳转到show.html.erb，图片的地址是：http://sssss-imgs.test.upcdn.net/img/img_name/00502fb437cb5ed9032f9393600578d8.png!320,图片打不开，好像图片没有上传到又拍云的服务器。请问我这是哪里出现了错误？请大家指导，非常感谢！！

1. 部分 Gemfile :

gem 'carrierwave', '~> 1.2', '>= 1.2.2'
gem 'carrierwave-upyun', '~> 0.2.2'
gem 'mini_magick'

2. config/initializers/carrierwave.rb : (这个是手动新增加的）

require "carrierwave"
require "carrierwave/validations/active_model"
CarrierWave.configure do |config|
  config.storage = :upyun
  config.remove_previously_stored_files_after_update = false
  config.upyun_username = "sssss"
  config.upyun_password = "ssssss123"
  config.upyun_bucket = "sssss-imgs"
  config.upyun_bucket_domain = "http://sssss-imgs.test.upcdn.net"
  config.upyun_api_host = "http://v0.api.upyun.com"
end

3. 基本上传组件 BaseUploader :


IMAGE_UPLOADER_ALLOW_IMAGE_VERSION_NAMES = %(320 640 800)
class BaseUploader < CarrierWave::Uploader::Base
  storage :upyun
  def store_dir
    "#{model.class.to_s.underscore}/#{mounted_as}"
  end

  def extension_white_list
    %w[jpg jpeg gif png svg]
  end


  def url(version_name = "")
    @url ||= super({})
    version_name = version_name.to_s
    return @url if version_name.blank?
    if not version_name.in?(IMAGE_UPLOADER_ALLOW_IMAGE_VERSION_NAMES)
      # To protected version name using, when it not defined, this will be give an error message in development environment
      raise "ImageUploader version_name:#{version_name} not allow."
    end
    [@url,version_name].join("!") 
  end

end

4. 图片上传组件 ImgUploader :

class ImageUploader < BaseUploader

  def filename
    if original_filename
      @name||=Digest::MD5.hexdigest(File.dirname(current_path))
      "#{@name}.#{file.extension}"
    end
  end
end

5. models img.rb :

class Img < ActiveRecord::Base
  mount_uploader :img_name, ImageUploader
end

6. imgs_controller.rb :

class ImgsController < ApplicationController

  def index
    @imgs = Img.all
  end

  def show
    @img = Img.find(params[:id])
  end

  def new
    @img = Img.new
  end

  def create
    @img = Img.new(img_params)
    @img.save
    redirect_to @img
  end

  def destroy
    @img.destroy
    render :index
  end

  private

  def img_params
    params.require(:img).permit!
  end
end

7. 上传图片和图片展示 :

## new.html.erb
<%= form_for @img do |f| %>
  <%= f.file_field :img_name %>
  <%= f.submit "上传" %>
<% end %>

## show.html.erb

<%= image_tag(@img.img_name.url("320")) %>

8. img 的 migration：

class CreateImgs < ActiveRecord::Migration[5.2]
  def change
    create_table :imgs do |t|
      t.string :img_name
      t.timestamps null: false
    end
  end
end