Middlewares運作
application server <<---------------------------->>ruby web framework
bunch of middlewares
有意義的env hash資料
SERVER_NAME
REQUEST_METHOD
REQUEST_PATH
PATH_INFO
REQUEST_URI
QUERY_STRING
HTTP_REFERER
在Nitrous下指令執行網頁
首先指定網址
git clone https//github.com/使用者名稱/資料夾 >>git clone GitHub網址
接線成功後
cd 資料夾/ >>cd 資料夾/
建立
bundle
安裝shotgum
gem install shotgun >>安裝shotgun套件
用shotgun指令在網頁上執行 Ruby port 3000
shotgun -o 0.0.0.0 -p 3000
Ctrl+C 停止連線
上方Preview選3000
Http常做
Get、Post、Delete、Put/Patch
常用套件
gem log4r
gem json
gem sqlite3
gem sinatra
gem sinatra-activerecord
程式碼
檔名：config.ru
require './framework' <<載入framework.rb
class MyApp < Framework
get '/' do <<在framework內get方法
self.inspect <<根目錄顯示
end
get '/0118b' do <<根目錄下0118b.rb
'Hello'
end
end
run MyApp <<run MyApp類別
inspect參考網址：http://rails.ruby.tw/debugging_rails_applications.html#inspect
檔名：framework.rb
class Framework
@@routes ={} <<宣告類別變數routes
class << self 把self內容增加到class
def find_route_and_execute(env)
path = env['PATH_INFO']
if @@routes.has_key?(path) <<如果這path的key對的話
@@routes[path].call <<OK的話執行call
else
nil <<給一個白布
end
end
def get(path,＆block) <<傳入path和&block
@@routes[path.to_s] = block <<把path轉字串
end
def call(env)
[200, <<網頁代碼200意思是成功載入
{"Content-Type" => "text/html"}, <<宣告html文件
[find_route_and_execute(env)] <<載入內容與執行
]
end
end
end
<<參考網址：http://sls.weco.net/node/10732
檔名：configa.ru
require './frameworka'
class MyApp < Framework
get /\/books\/(\d+?)$/ do |id| <<網址/books/傳入變數
p "request" + request.inspect
p "params" + params.inspect
"This is book id = #{id},request = #{request},foo = #{params}"
end
get /\/0118b/ do <<網址/0118b.rb
'Hello'
end
end
run MyApp
檔名：frameworka.rb
class Framework
@@routes ={}
class << self
def params
@@params
end
def request
@@request
end
def find_route_and_execute(env)
path = env['PATH_INFO']
@@routes.each do |path_exp,code_block|
var_arr = path.scan(path_exp).flatten <<scan轉成陣列,flatten變回一維陣列
unless var_arr.empty?
return code_block.call(*var_arr)
end
end
""
end
def get(path,＆block)
@@routes[path] = block
end
def call(env)
@@request = Rack::Request.new(env)
@@params = @@request.params
[200,
{"Content-Type" => "text/html"},
[find_route_and_execute(env)]
]
end
end
end
檔名：g0118.ru
require 'bundler'
Bundler.setup
Bundler.require
class MyApp < Sinatra::Base
get '/0118b/:name'
"Hello, #{params[:name]}"
end
get '/' do
'Hello'
end
post '/books' do
'post books'
end
end
run MyApp
檔名：gemfileb.ru
require 'bundler'
Bundler.setup
Bundler.require
require './gemfilea'
class MyApp < Framework
get /\/books\/(\d+?)$/ do |id|
render 'show.html', layout_path: 'views/layout2.erb', locals: {id: id}
end
get /\/0118b/ do
'Hello'
end
end
run MyApp
檔名：gemfilea.rb
class Framework
@@routes = {}
class << self
def params
@@params
end
def request
@@request
end
DEFAULT_LAYOUT_PATH = 'views/layout.erb'
# render('index, foo: "bar")
def render(view_path, options = {})
layout_path = options.delete(:layout_path) || DEFAULT_LAYOUT_PATH <<網頁路徑
locals_hash = options.delete(:locals) || {} <<網頁ID
template_path = File.join("views", "#{view_path}.erb") <<載入網頁要在views下找某某.erb
view_buffer = Tilt::ERBTemplate.new(template_path).render(self, locals_hash) <<利用ERB把載入檔案路徑和網頁路徑和ID記錄下來
Tilt::ERBTemplate.new(layout_path).render(self, locals_hash) do
view_buffer
end
end
def find_route_and_execute(env)
path = env['PATH_INFO']
@@routes.each do |path_exp, code_block|
var_arr = path.scan(path_exp).flatten
unless var_arr.empty?
return code_block.call(*var_arr)
end
end
""
end
def get(path, &block)
@@routes[path] = block
end
def call(env)
@@request = Rack::Request.new(env)
@@params = @@request.params
[200,
{"Content-Type" => "text/html"},
[find_route_and_execute(env)]
]
end
end
end
檔名：layout.erb
路徑：views/layout.erb <<views是資料夾
<!DOCTYPE html>
<html>
<head>
<title>Album</title>
</head>
<body>
<%= yield %>
</body>
</html>
檔名：layout2.erb
路徑：views/layout2.erb
<!DOCTYPE html>
<html>
<head>
<title>Books</title>
</head>
<body>
<%= yield %>
</body>
</html>
檔名：show.html.erb
路徑：views/show.html.erb
You are getting book with id：<%=id%>
<pre>
<%=params.inspect%>
</pre>
檔名：img_list.rb
class ImgList < Sinatra::Base
Images = {
"1" => {
url: 'http://i.imgur.com/LIPAV4D.jpg', title: 'The incredible paintings of Rob Gonsalves 1'},
"2" => {
url: 'http://i.imgur.com/y40a93x.jpg', title: 'Image2'},
"3" => {
url: 'http://i.imgur.com/hswP6Mz.png', title: 'A moment of silence'
}
}
get '/imgs' do
erb :'index.html'
end
get '/imgs/:id' do |imgid|
Images.each do |id, img|
if id.to_i == imgid.to_i
@img = img
break
end
end
erb :'show.htmla'
end
end
檔名：show.htmla.erb
路徑：views/show.htmla.erb
<div>
Title：<%=@img[:title]%><BR/>
<img src="<%=@img[:url]%>" width="400"/>
</div>
檔名：index.html.erb
路徑：views/index.html.erb
<ul>
<%Images.each do |img|%>
<li>Title：<%=img[:title]%><BR/>
<img src="<%=img[:url]%>" width="400"/>
</li>
<%end%>
</ul>
檔名：session.ru
require 'bundler'
Bundler.setup
Bundler.require
require './auth_app'
run AuthApp
檔名：auth_app.rb
class AuthApp < Sinatra::Base
configure do
enable :sessions
set :session_secret, "nljksadlkasjdaskjd;lasdjlkasjdklasjdals;hdasdhsdas;hdyqudqwudajs"
logger = Log4r::Logger.new "app"
logger.outputters << Log4r::Outputter.stderr
file_logger = Log4r::FileOutputter.new('logtest', filename: 'development.log')
#file_logger.formatter = Log4r::PatternFormatter.new(pattern: ' [%1] %d :: %m ')
logger.outputters << file_logger
end
Users = [
{
email: 'ryudo@5xruby.tw',
password: '1qaz2wsx'
},{
email: 'eddie@5xruby.tw',
password: '12345678'
}
]
Images = [
{
url: 'http://i.imgur.com/LIPAV4D.jpg', title: 'The incredible paintings of Rob Gonsalves 1'},
{
url: 'http://i.imgur.com/y40a93x.jpg', title: 'Image2'},
{
url: 'http://i.imgur.com/hswP6Mz.png', title: 'A moment of silence'
}
]
helpers do
def logger
@logger ||= Log4r::Logger['app']
end
end
before do
logger.info "#### BEFORE BLOCK########"
@current_user = session[:current_user]
end
before '/imgs' do
unless session[:current_user]
halt 'Not authorized'
end
end
get '/imgs' do
erb :'index.html'
end
get '/login' do
erb :'login.html'
end
post '/login' do
Users.each do |user|
if user[:email] == params["email"] && user[:password] == params[:password]
@current_user = user
session[:current_user] = user
return erb(:'login_success.html')
end
end
redirect '/login'
end
end
檔名：login.html.erb
路徑：views/ login.html.erb
<form action="/login" method="post">
<input type="email" name="email" />
<input type="password" name="password" />
<input type="submit" value="登入"/>
</form>
檔名：login_success.html.erb
路徑：views/ login_success.html.erb
<div>
Hello：<%=@current_user[:email]%>
</div>
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