修改机架应用 [英] Modify Rack App

问题描述

对于我的一个ruby应用程序，我需要服务器根据子域来路由请求。有一些方法可以使用其他宝石来做到这一点，但我决定制作自己的中间件。此代码根据请求的运行位置来运行应用程序。

config.ru

  require'./subdomain'
 require'./www'
 
 run Rack :: Subdomain.new（[
 {
：subdomain = >test，
：application => Sinatra :: Application 
} 
]）; 
  

subdomain.rb

 模块机架
类子域
 def初始化（app）
 @app = app 
结束
 
 def call（env）
 @ app.each do | app | 
 match ='test'.match（app [：subdomain]）
 if match b $ b return app [：application] .call（env）
 end 
 end 
 end 
 end 
 end 
  

我的问题是如何修改这个工作代码工作完全一样，但它看起来像这样的代码调用：

  run Rack :: Subdomain do 
 map'www'do 
示例:: WWW 
结束
 
 map'api'do 
示例:: API 
结束
结束
  

使用建议的代码：

config.ru

  require'./subdomain'
 require'./www'
 
运行Rack :: Subdomain.new do | x | 
 x.map'test'do 
 Sinatra :: Application 
 end 
 end 
  

subdomain.rb

  module Rack 
 class子域
 def initialize（路线=零）
 @路由=路由
产生自己
结束
 
 def map（subdomain）
 @routes<< {subdomain：subdomain，application：yield} 
 end 
 
 def call（env）
 @ routes.each do | route | 
 match ='test'.match（route [：subdomain]）
 if match b $ b return route [：application] .call（env）
 end 
 end 
 end 
 end 
 end 
  

解决方案

你调用上面的工作代码，但它似乎根本没有检测到子域，但将它连接到文字'测试'。无论如何，您可以通过创建一个地图方法来实现一个类似于您想要的模式，该方法将条目添加到您的子域名>应用程序路由列表中。我已将 @app 重命名为 @routes ，因为它是路由的哈希，而不是应用程序引用。 / b>

  module Rack 
 class子域
 def初始化（routes = []）
 @routes =路线
产生自我，如果block_given？ 
 end 
 
 def map（subdomain）
 @routes<< {subdomain：subdomain，application：yield} 
 end 
 
 def call（env）
 @ routes.each do | route | 
 match ='test'.match（route [：subdomain]）
 if match b $ b return route [：application] .call（env）
 end 
 end 
结束
结束
结束
 
 rsd = Rack :: Subdomain.new do | x | 
 x.map'www'do 
示例:: WWW 
 end 
 $ b x.map'api'do 
示例:: API 
 end 
 end 
 
 run rsd 
  

For one of my ruby applications i need the server to route requests based on the subdomain. There are ways to do this using other gems but i decided to make my own "middleware". This code runs applications based on where the request is going to.

config.ru

require './subdomain'
require './www'

run Rack::Subdomain.new([
  {
    :subdomain => "test", 
    :application => Sinatra::Application
  }
]);

subdomain.rb

module Rack
  class Subdomain
    def initialize(app)
      @app = app
    end

    def call(env)
      @app.each do |app|
        match = 'test'.match(app[:subdomain])
        if match
          return app[:application].call(env)
        end
      end
    end
  end
end

My question is how can i modify this working code to work exactly the same but have it called by code that looks like this:

run Rack::Subdomain do
  map 'www' do
    Example::WWW
  end

  map 'api' do
    Example::API
  end
end

With suggested code:

config.ru

require './subdomain'
require './www'

run Rack::Subdomain.new do |x|
  x.map 'test' do
    Sinatra::Application
  end
end

subdomain.rb

module Rack
  class Subdomain
    def initialize(routes = nil)
      @routes = routes
      yield self
    end

    def map(subdomain)
      @routes << { subdomain: subdomain, application: yield }
    end

    def call(env)
      @routes.each do |route|
        match = 'test'.match(route[:subdomain])
        if match
          return route[:application].call(env)
        end
      end
    end
  end
end

解决方案

You call the above "working code" but it doesn't seem to detect the subdomain at all, but wires it to the literal 'test'. At any rate, you can implement a pattern similar to what you want by making a map method which adds entries to your list of subdomain->application routes. I've renamed your @app to @routes since it is a hash of routes, not an application reference.

module Rack
  class Subdomain
    def initialize(routes = [])
      @routes = routes
      yield self if block_given?
    end

    def map(subdomain)
      @routes << { subdomain: subdomain, application: yield }
    end

    def call(env)
      @routes.each do |route|
        match = 'test'.match(route[:subdomain])
        if match
          return route[:application].call(env)
        end
      end
    end
  end
end

rsd = Rack::Subdomain.new do |x|
  x.map 'www' do
    Example::WWW
  end

  x.map 'api' do
    Example::API
  end
end

run rsd

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