johnlu

Vim 中 html 标签 a 去除下划线

johnlu — Sat, 10 Aug 2013 09:10:58 +0800

用 Vim 在编辑 html 文件时，a 标签中的文字都会有下划线，在一行中这个效果倒也不赖，但是 a 标签换行的话看着就有些丑了如图：

执行 Rspec 时提示 “You didn't set config.secret_key_base.”

johnlu — Thu, 01 Aug 2013 20:47:30 +0800

执行rspec spec/requests/authentication_pages_spec.rb -e "signin with invalid information"

提示: ·DEPRECATION WARNING: You didn't set config.secret_key_base. Read the upgrade documentation to learn more about this new config option. (called from get at /home/johnlu/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/forwardable.rb:171)

在网上找到的解决办法： https://github.com/rails-api/rails-api/issues/72 在config/application.rb中加入config.secret_key_base = 'blipblapblup'

在http://edgeguides.rubyonrails.org/configuring.html有说明，但不懂是什么意思！ config.secret_key_base used for specifying a key which allows sessions for the application to be verified against a known secure key to prevent tampering. Applications get config.secret_key_base initialized to a random key in config/initializers/secret_token.rb.

问题是解决了，但迷茫的是为什么要这样设置？

每次执行 Rails 的时候都有提示信息是什么意思

johnlu — Wed, 31 Jul 2013 21:29:41 +0800

如执行rails generate integration_test authentication_pages

DEPRECATION WARNING: config.whiny_nils option is deprecated and no longer works. (called from block in <top (required)> at /home/johnlu/rails_projects/mysampleapp/config/environments/development.rb:10)
config.eager_load is set to nil. Please update your config/environments/*.rb files accordingly:

  * development - set it to false
  * test - set it to false (unless you use a tool that preloads your test environment)
  * production - set it to true

      invoke  rspec
DEPRECATION WARNING: Model based mass assignment security has been extracted
out of Rails into a gem. Please use the new recommended protection model for
params or add `protected_attributes` to your Gemfile to use the old one.

To disable this message remove the `whitelist_attributes` option from your
`config/application.rb` file and any `mass_assignment_sanitizer` options
from your `config/environments/*.rb` files.

See http://guides.rubyonrails.org/security.html#mass-assignment for more information.

DEPRECATION WARNING: The Active Record auto explain feature has been removed.

To disable this message remove the `active_record.auto_explain_threshold_in_seconds`
option from the `config/environments/*.rb` config file.

See http://guides.rubyonrails.org/4_0_release_notes.html for more information.

具体要设置哪些参数呢？ Ubuntu12.04 32 位

新建一个仓库后，推迭到 Github 时要输用户名密码

johnlu — Tue, 30 Jul 2013 22:10:58 +0800

原来本地也有一个 Git 工作树仓库，推迭到 Github 时使用 SSH-Key；把原来的 Git 仓库删除后，再新建一个一样的，但推迭到 Github 时却变成了要输入用户名密码；感觉没有使用 SSH-Key 方便请问大牛如何再设置成使用 SSH-Key？？

Git 恢复到上次提交后，新建的文件还在呢？

johnlu — Sat, 27 Jul 2013 22:09:42 +0800

使用命令git reset --head恢复到上次提交，但上次提交后新建的文件怎么还在的呢？

Rails console 时间不正确

johnlu — Fri, 26 Jul 2013 22:24:10 +0800

在控制台上创建表记录时，时间显示不正确

2.0.0p247 :022 > user.updated_at
 => Fri, 26 Jul 2013 14:17:27 UTC +00:00

然而我系统的时间是正确的

$ date
Fri Jul 26 22:18:54 CST 2013

RVM 总是提示"rvm rvmrc warning ignore"

johnlu — Mon, 22 Jul 2013 21:24:42 +0800

终端进入到 rails app 目录后总是提示

RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too,
you can ignore these warnings with 'rvm rvmrc warning ignore /home/johnlu/rails_projects/mysampleapp/Gemfile'.
To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'.

Gemfile 的内容为：

source 'http://ruby.taobao.org'
ruby '2.0.0'

gem 'rails', '4.0.0'

group :development, :test do
  gem 'sqlite3', '1.3.7'
  gem 'rspec-rails', '2.13.1'
end

group :test do
  gem 'selenium-webdriver', '2.0.0'
  gem 'capybara', '2.1.0'
end

gem 'sass-rails', '4.0.0'
gem 'uglifier', '2.1.1'
gem 'coffee-rails', '4.0.0'
gem 'jquery-rails', '2.2.1'
gem 'turbolinks', '1.1.1'
gem 'jbuilder', '1.0.2'

group :doc do
  gem 'sdoc', '0.3.20', require: false
end

group :production do
  gem 'pg', '0.15.1'
end

系统：Ubuntu 12.04

2 个人使用 Git 做版本控制，如何合并代码

johnlu — Sat, 20 Jul 2013 08:39:14 +0800

克隆代码后，修改！再通过命令：git push origin master 提交合并时报错：

remote: error: refusing to update checked out branch: refs/heads/master

remote: error: By default, updating the current branch in a non-bare repository

remote: error: is denied, because it will make the index and work tree inconsistent

remote: error: with what you pushed, and will require 'git reset --hard' to match

remote: error: the work tree to HEAD.

remote: error:

remote: error: You can set 'receive.denyCurrentBranch' configuration variable to

remote: error: 'ignore' or 'warn' in the remote repository to allow pushing into

remote: error: its current branch; however, this is not recommended unless you

remote: error: arranged to update its work tree to match what you pushed in some

remote: error: other way.

remote: error:

remote: error: To squelch this message and still keep the default behaviour, set

remote: error: 'receive.denyCurrentBranch' configuration variable to 'refuse'.

To git@192.168.1.X:/var/git.server/.../web

! [remote rejected] master -> master (branch is currently checked out)

error: failed to push some refs to 'git@192.168.1.X:/var/git.server/.../web'

到底是什么原理？

Ubuntu12.04 安装 RVM 后，打开新的虚拟终端都要执行 source .bashrc

johnlu — Wed, 17 Jul 2013 21:50:48 +0800

按照http://ruby-china.org/wiki/rvm-guideRVM成功安装但每次打开新的终端，都不能使用ll命令，需要执行 source .bashrc 后才可以！

其它问题都正常，登录后就算没有执行 source .bashrc；RVM、gem 的功能都能正常用。但就不能使用 ll 这样的别名命令了

求 Sublime Text 2 操作技巧

johnlu — Fri, 12 Jul 2013 14:00:13 +0800

在 Sublime 官方首页第 2 张图显示的操作技巧，求操作过程！如图：操作前：

操作后：

3 个双引号在编辑器中的高亮问题

johnlu — Tue, 02 Jul 2013 12:36:52 +0800

在同一行代码有 3 个双引号，有些编辑器的高亮会混乱，如 Sublime Text 2 和 Notepad++ 但在 Vim 中就没问题。在 Sublime 中有办法解决吗？

如图：

Sublime：

Vim:

RVM 安装 Ruby 报错

johnlu — Sun, 30 Jun 2013 14:49:34 +0800

系统：Ubuntu12.04 提示错误： There was an error while trying to resolve rubygems version for 'latest'. Halting the installation.

是什么原因？

在 Ubuntu11.10 64 位系统安装 newrelic 出错

johnlu — Thu, 06 Jun 2013 15:55:15 +0800

shilong@lushilong:~$ sudo apt-get install newrelic-sysmond Reading package lists... Done Building dependency tree
Reading state information... Done The following NEW packages will be installed: newrelic-sysmond 0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded. Need to get 1,290 kB of archives. After this operation, 3,723 kB of additional disk space will be used. Get:1 http://apt.newrelic.com/debian/ newrelic/non-free newrelic-sysmond amd64 1.2.0.257 [1,290 kB] Fetched 1,290 kB in 20s (62.7 kB/s)
Selecting previously deselected package newrelic-sysmond. (Reading database ... 302046 files and directories currently installed.) Unpacking newrelic-sysmond (from .../newrelic-sysmond_1.2.0.257_amd64.deb) ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Setting up newrelic-sysmond (1.2.0.257) ... Adding system user newrelic' (UID 117) ... Adding new groupnewrelic' (GID 129) ... groupadd: cannot lock /etc/group; try again later. adduser: /usr/sbin/groupadd -g 129 newrelic' returned error code 10. Exiting. chown: invalid group:root:newrelic' chown: invalid user: `newrelic:newrelic' Unknown id: newrelic

按照官方网上的教程安装的，https://newrelic.com/docs/server/server-monitor-installation-ubuntu-and-debian

使 deb 包安装也是一样

ssh 自动断开后,再也连接不上

johnlu — Thu, 24 Jan 2013 15:29:47 +0800

A 主机 ssh 连接到 B 主机，当空闲一段时间后连接自动断开，提示Write failed: Broken pipe 在 A 主机重新连接，却提示ssh: connect to host 192.168.1.228 port 22: Connection refused

A 主机进程： 1722 ? 00:00:00 ssh-agent 9165 ? 00:00:00 sshd

B 主机进程： 639 ? 00:00:00 sshd 2837 ? 00:00:00 sshd 在 B 主机查看：who root pts/1 2013-01-24 15:14 (192.168.1.178) #A 主机的 IP

在 B 主机 ssh 连接 A 主机后，A 主机就能正常连接 B 主机，这是为什么呢？

Cucumber+Capybara 做自动化测试登录的问题

johnlu — Wed, 16 Jan 2013 16:43:53 +0800

用 Cucumber+Capybara 做自动化测试; 但是首先要进行登录，那么在写 Scenario 时每个 Scenario 都要有登录的步骤，如果有 100 个 Scenario 的话，就要登录 100 次了；

有没有什么方法可以只登录一次，其它的 Scenario 就不用登录了呢？

我尝试用 backgrounds，但是实际上也是执行每个 Scenario 前都会执行 backgrounds 的步骤；用 hooks 也一样；