lanrion lanrion

Convert from Excel to JSON

roo document: roo

require 'rubygems'
require 'roo'
require 'json'

hash = {}

Routes

小心地使用 Match（Rails 3 已实现）

Rails 3 提供了 match 方法供我们自定义 routes，然而我们要小心使用它以避免“跨站脚本攻击”（XSS Attack）。比如像这样的 routes：

注：（r3 代表 Rails 3，r4 代表 Rails 4）

# routes.rb

Implement Routing for Subdomains

Rails 3.0 introduced support for routing constrained by subdomains.

A subdomain can be specified explicitly, like this:

match '/' => 'home#index', :constraints => { :subdomain => 'www' }

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

微信的信息接收与回复，两者是独立的。

信息接收

共同点在于：都有 ToUserName，FromUserName，CreateTime，MsgType，这四个字段。

在信息接收方面，分为“普通消息”、“事件推送”，“语音识别结果(微信用户发送语音，微信服务器翻译成文本，只不过比语音消息多一个识别结果字段：Recognition)”。

“普通消息”：http://mp.weixin.qq.com/wiki/index.php?title=接收普通消息

文本消息(通过“Content”关键字来获取文本内容，这点比较重要，也是使用比较多的场合)
图片消息

Alt+F2 : 快速打开搜索栏。

Alt+Tab : 不同应用之间的切换，选中某一个，再Alt+~ 即可放大当前栏目。

下载了Sublime Text 之后，我们需要建立一个快捷命令

sudo mv Sublime\ Text\ 2 /opt/
sudo ln -s /opt/Sublime\ Text\ 2/sublime_text /usr/bin/sublime

参考 http://my.oschina.net/yexingkong/blog/140726

	; Comments start with semicolons.

	; Clojure is written in "forms", which are just
	; lists of things inside parentheses, separated by whitespace.
	;
	; The clojure reader assumes that the first thing is a
	; function or macro to call, and the rest are arguments.
	;
	; Here's a function that sets the current namespace:
	(ns test)

	class Dragon; end

	# 使用 def 定義 class method
	Dragon.instance_eval do
	def foo
	puts "bar"
	end
	end
	Dragon.foo # bar

	fork 了某个开源项目，发了PR后，需要更新master的代码的做法：

	git remote add --track master upstream git://github.com/upstreamname/projectname.git

	git fetch upstream

	git merge upstream/master

	注意：upstream 是定义名称。

	class ApplicationController < ActionController::Base

	...
	#Problem:
	#In rails 3.0.1+ it is no longer possible to do this anymore;
	# rescue_from ActionController::RoutingError, :with => :render_not_found
	#
	#The ActionController::RoutingError thrown is not caught by rescue_from.
	#The alternative is to to set a catch-all route to catch all unmatched routes and send them to a method which renders an error
	#As in http://techoctave.com/c7/posts/36-rails-3-0-rescue-from-routing-error-solution