用Ruby编写博客应用

用Ruby编写博客应用 Powered by Rabbit 0.9.0
用Ruby
编写博客应用
吴江

Ruby
1/51

作者
2/51

基础
工具 3/51

irb
ri
rdoc 4/51

演示5/51

基本类型
i = 1 # Integer
b = true # Boolean
f = 1.0/3 # Float
n = nil # Null
str = "a string" # String
sym = :"a string" # Symbol
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面向对象
i.class # => Integer
b.class # => Boolean
f.class # => Float
n.class # => NilClass
str.class # => String
sym.class # => Symbol
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符号
str1 = "a string"
str2 = "a string"
str1 == str2 # true
str1.object_id == str2.object_id # false
sym1 = :"a string"
sym2 = :"a string"
sym1 == sym2 # true
sym1.object_id == sym2.object_id # true
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数组操作
a = [1, 2, 3]
a << 4 # a = [1, 2, 3, 4]
a[0] # => 1
a[1..3] # => [2, 3, 4]
a[1] = "a" # a = [1, "a", 3, 4]
a[5] = [1,2] # a = [1, "a", 3, 4, nil, [1,2]]
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哈希表操作
a = { "a" => 1 }
a["a"] # => 1
a["b"] # => nil
a["b"] = 2 # a = { "a" => 1, "b" => 2}
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写博客
11/51

服务商
12/51

MSN
Space
挂了 13/51

Wordpress
14/51

满大街
都是 15/51

没脸和别
人打招呼
16/51

将要实现
的特点
17/51

不用DB
鼓掌!!!
18/51

没有SQL
注入
19/51

不用担心后
台密码被盗
20/51

文件格式
# 文件名: 2010-10-10-a-lucky-day.txt
title: "A Lucky Day"
date: 10/10/2010
# 今天是我的幸运日
早上在地铁门将要关上的那一刻，我冲进了车厢，于是约会没有迟到...
中午提前了一点去港丽，居然只排了42分钟...
晚上又赶上了末班车...
到家数了数，钱包里面正好有42块钱...
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YAML
22/51

JSON
兼容 23/51

Markdown
24/51

Markdown
不能传值
25/51

Haml
模版 26/51

Sinatra
DSL
27/51

演示28/51

安装
Ruby29/51

RVM
30/51

安装
Ruby库
31/51

Rubygems:
包管理工具
32/51

Bundler
33/51

gem
install
bundler34/51

Gemﬁle
source "http://rubygems.org"
gem 'haml' # HAML模版
gem 'rdiscount' # 渲染Markdown
gem 'sinatra' # Sinatra
gem 'thin' # 应用服务器
gem 'shotgun' # 负责重启服务器
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bundle
install
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Hello, world
get '/' do
"Hello, world!"
end
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get '/'
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列出
所有
日志 39/51

外部shell命令
`ls *.txt`
`find -name "*.txt"`
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使用Dir类
Dir["*.txt"]
Dir["**/*.txt"]
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读取
文件
内容 42/51

File.read
43/51

/:year/:month/:day/:title
列出文章内容
44/51

评论45/51

Disqus
46/51

部署47/51

Heroku
48/51

Q & A
49/51

本项目地址
http://github.com/nouse/text-blog
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谢谢！
51/51

用Ruby编写博客应用

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