roam (流浪的蜗牛)

发现一个小 bug，浏览器通知重复

roam — Tue, 13 Aug 2013 14:21:41 +0800

发现一个小小的 bug，开启了浏览器通知以后，一个信息会一次重复提示两遍，比如这样：

[求助] Rails 如何实现页面消息推送

roam — Wed, 22 May 2013 13:30:20 +0800

比如我们社区的，有人回复了，则会提示消息，这个应该怎么实现呢？

毕设文献翻译

roam — Tue, 07 May 2013 22:32:30 +0800

毕业了，毕设要做科技文献翻译，最好和项目有关，我的毕设用 rails 写的，大家推荐推荐比较适合我这个阶段翻译的相关文献呗，字数要求是翻译成中文以后五千字左右~~~

域名注册和主机服务，大家有什么建议呢？

roam — Tue, 16 Apr 2013 12:15:39 +0800

想把自己的博客给搭起来，大家对于域名注册网站和主机服务以及搭建的过程有什么建议呢，我看了好几个域名服务网站，域名和主机价格都不一样的~~~

新手咯，谢谢大家帮助哇

有没有比较全面的关于建站配置什么的的一些文章推荐呢~

给完全没有接触过 Rails 的同事做 Rails 简介应该说些什么呢？

roam — Mon, 18 Mar 2013 10:56:17 +0800

给同事做一个小时的讲课形式的简单介绍 ruby on rails 应该介绍什么内容比较好呢？

关于 send_file,求帮助

roam — Thu, 24 Jan 2013 12:55:20 +0800

我用的是 nginx，在做 Download 的时候，send_file 不 work

在 google network 脚本中是这样的

Cache-Control:private Connection:keep-alive Content-Disposition:inline; filename="test.xls" Content-Transfer-Encoding:binary Content-Type:application/xls Date:Thu, 24 Jan 2013 04:48:51 GMT Server:nginx/1.2.6 Transfer-Encoding:chunked X-Request-Id:57c48c7050112100289d8345f48d5af8 X-Runtime:0.106000 X-UA-Compatible:IE=Edge

Controller 是 send_file( filename)

为什么下载不了呢？大大们帮帮忙

sqlite to postgreSQL 使用 taps 时报错，求大神们帮助

roam — Mon, 21 Jan 2013 12:20:28 +0800

从 sqlite 到 postgreSQL 时，用 taps，建立 server 的时候，报错，google 了好久没有找到具体的解决方式，请问有没有碰到同样问题的大大呢，求解决方案

C:\Project\DeliveryTools\DeliveryManagementTaskBoard.com>taps server sqlite://db/development.sqlite3 delivery delivery C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/ad apters/sqlite.rb:62:in initialize': SQLite3::CantOpenException: unable to open database file (Sequel::DatabaseConnectionError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/adapters/sqlite.rb:62:innew' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/adapters/sqlite.rb:62:in connect' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/database/misc.rb:45:inblock in initialize' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool.rb:92:in call' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool.rb:92:inmake_new' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:126:in make_new' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:112:inavailable' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:102:in block in acquire' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:146:inblock in sync' from internal:prelude:10:in synchronize' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:146:insync' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:101:in acquire' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/connection_pool/threaded.rb:74:inhold' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/database/connecting.rb:226:in synchronize' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/adapters/sqlite.rb:94:inexecute_ddl' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/database/schema_methods.rb:320:in create_table_from_generator' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/database/schema_methods.rb:94:increate_table' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/plugins/schema.rb:24:in create_table' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/ lib/sequel/plugins/schema.rb:33:increate_table!' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/taps-0.3.24/li b/taps/db_session.rb:20:in <top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custo m_require.rb:36:inrequire' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custo m_require.rb:36:in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/taps-0.3.24/li b/taps/server.rb:4:in' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custo m_require.rb:55:in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custo m_require.rb:55:inrequire' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/taps-0.3.24/li b/taps/cli.rb:61:in server' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/taps-0.3.24/li b/taps/cli.rb:27:inrun' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/taps-0.3.24/bi n/taps:6:in <top (required)>' from C:/RailsInstaller/Ruby1.9.3/bin/taps:19:inload' from C:/RailsInstaller/Ruby1.9.3/bin/taps:19:in `

关于:remote=>true 的困惑<已解决>

roam — Thu, 17 Jan 2013 18:02:52 +0800

使用 remote 提交表单和连接的时候，有时候会是 ajax 形式的提交，有时候又不是，请问其中有什么关键的点呢？

大大们帮帮忙~~

加了源码~~

<%= form_tag update_person_edit_checkmen_path ,:remote =>true do%>

Component <%= text_field_tag :component , "#{@component}"%> name <%=text_field_tag :name,"",:placeholder=>"Name" %> First Name <%= text_field_tag :firstname %> Last Name <%= text_field_tag :lastname %> Eid <%= text_field_tag :eid %> Email <%= email_field_tag :email %>

求一个完整部署 nginx 、thin、postgreSQL 的指南<已解决，windows 部署确实有些麻烦>

roam — Thu, 17 Jan 2013 11:08:51 +0800

最近 webrick 常常出一些莫名问题，想把环境换成 nginx+thin，但是部署的时候总是不成功，thin 是能够正确运行的，但是加上 nginx 就不行了，想请大大们介绍介绍 nginx 对于 rails 的详细配置，谢谢啦 ~~~

ps: 我是在 windows 上开发的~~

Windows 使用 mongrel 报错~~有经验的朋友帮忙看看

roam — Fri, 11 Jan 2013 13:53:19 +0800

C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/act ive_support/dependencies.rb:251:in `require': cannot load such file -- dispatche r (LoadError)

请问要用 mongrel 替代 webrick，需要做哪些部署呢？

如何发送带有表格图片等内容的邮件

roam — Mon, 10 Dec 2012 10:54:38 +0800

有没有办法在不能使用 smtp 的情况下，想 rails 发送邮件。想过用 mailto，但是应该如何给 mailto body 传递 html 类容呢。。。或者是如何直接 copy 某个 DOM 并 paste 到剪切板呢？

请问一一个 ActionMailer config 的问题

roam — Fri, 07 Dec 2012 18:10:05 +0800

能不能不使用 smtp 协议，用 outlook 应该如何配置呢？

layout 能否多次 yield 多部分 (解决)

roam — Mon, 26 Nov 2012 16:17:02 +0800

每个页面的布局都是相同的，都把页面分成了几个部分，只是内容不一样而已，请问有没有方式，在 view/layout 中定义好，<%= yield%> 多次多部分呢？这样就会省去好些代码，并且同意样式，应该如何做呢？

每次 js 请求都会自己执行两次，自己找不到问题所在

roam — Wed, 21 Nov 2012 14:14:33 +0800

下面是我的 gemfile 文件，请问有重复 require 的吗？ source 'https://rubygems.org'

gem 'rails', '3.2.9'

# Bundle edge Rails instead: # gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3' gem "ransack", :git => "git://github.com/ernie/ransack.git" # Track git repo

# Gems used only for assets and not required # in production environments by default. group :assets do gem 'sass-rails', '~> 3.2.3' gem 'coffee-rails', '~> 3.2.1' gem 'jquery-datatables-rails', :git => "git://github.com/rweng/jquery-datatables-rails.git" gem 'jquery-ui-rails'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', :platforms => :ruby

gem 'uglifier', '>= 1.0.3' end gem 'will_paginate' gem 'jquery-rails' gem 'delayed_job_active_record' gem 'daemons' `# To use ActiveModel has_secure_password

gem 'bcrypt-ruby', '~> 3.0.0'``

`# To use Jbuilder templates for JSON

gem 'jbuilder'`

# Use unicorn as the app server # gem 'unicorn'

# Deploy with Capistrano # gem 'capistrano' #To use debugger gem 'debugger' 这是 application.js 文件 //= require jquery //= require jquery_ujs //= require layer //= require dataTables/jquery.dataTables //= require_tree .

how to require outlook app

roam — Tue, 20 Nov 2012 14:44:47 +0800

我想在发送邮件的时候不是 ruby 自己发送，而是调用客户端电脑上的 outlook，只是在打开的时候，向邮件写入一些主要的内容，请问，这个应该如何做到呢？

求教 : <%= render "form"%>,<%= render :partial =>' form'%> <%= render form%>有什么区别呢？

roam — Thu, 15 Nov 2012 13:51:55 +0800

请问，如题，render 的几种写法有什么区别呢，有时候用 render：partial => 会报错，但是直接 render“form”就能行了呢。。。

求助 ActiveRecord::StatementInvalid: Encoding::Unde finedConversionError

roam — Mon, 12 Nov 2012 19:20:23 +0800

导入数据到数据库时，出现这个问题 failed with ActiveRecord::StatementInvalid: Encoding::Unde finedConversionError: "\xFC" from ASCII-8BIT to UTF-8 应该怎么解决呢？

Upload 文件的速度很慢，是什么原因呢？

roam — Thu, 08 Nov 2012 16:31:24 +0800

最近做了一个 upload 的功能，导入的是 CSV 文件，使用的是 rails 内嵌的 CSV 方法，导入的时候会对数据进行处理并且保存，当文件数据有上千条的时候，要花费很长的时间，请问是代码的问题还是方法问题呢，还是数据库的问题，如何改善速度呢？

An existing connection was forcibly closed by the remote host

roam — Thu, 01 Nov 2012 13:52:21 +0800

请问这是什么样的错误，如何解决？下面是运行的 log Started POST "/checkmen/import" for 127.0.0.1 at 2012-11-01 13:41:56 +0800 Processing by CheckmenController#upload as HTML Parameters: {"数据省略 "} Redirected to http://localhost:3000/checkmen/import Completed 302 Found in 6ms (ActiveRecord: 0.0ms) [2012-11-01 13:41:56] ERROR Errno::ECONNRESET: An existing connection was forcibly closed by the remote host. c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:80:in eof?' c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:80:in run' c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in block in start_thread'

Started GET "/checkmen/import" for 127.0.0.1 at 2012-11-01 13:41:56 +0800 Processing by CheckmenController#import as HTML Rendered checkmen/import.html.erb within layouts/application (2.0ms) Completed 200 OK in 22ms (Views: 22.0ms | ActiveRecord: 0.0ms)

如何设置 config ，连接 gitcafe

roam — Wed, 31 Oct 2012 16:57:04 +0800

用 gitcafe 的时候，连不上服务器，报错，no address associated with name. 应该是 config 文件的问题，但是要怎么设置呢？