Sinatra 变量范围 [英] Sinatra Variable Scope

问题描述

输入以下代码:

### 依赖需要红宝石"需要'sinatra'需要数据映射器"### 配置config = YAML::load(File.read('config.yml'))name = config['config']['name']description = config['config']['description']用户名 = 配置['配置']['用户名']密码 = config['config']['password']主题 = config['config']['theme']set :public, 'views/themes/#{theme}/static'### 楷模DataMapper.setup(:default, "sqlite3://#{Dir.pwd}/marvin.db")班级帖子包括 DataMapper::Resource属性:id，序列号属性:名称，字符串属性:正文，文本属性:created_at，日期时间属性:slug，字符串结尾班级页面包括 DataMapper::Resource属性:id，序列号属性:名称，字符串属性:正文，文本属性:slug，字符串结尾DataMapper.auto_migrate！### 控制器得到'/'做@posts = Post.get(:order => [:id_desc])哈姆勒:主题/#{主题}/索引"结尾得到 '/:year/:month/:day/:slug' 做年 = 参数[:年]月 = 参数[:月]天=参数[:天]弹头 = 参数[:弹头]哈姆:主题/#{主题}/post.haml"结尾得到 '/:slug' 做哈姆勒:主题/#{主题}/page.haml"结尾得到 '/admin' 做哈姆:管理员/索引.haml"结尾

我想让 name 以及所有这些变量可用于整个脚本以及视图.我试着让它们成为全局变量，但没有骰子.

解决方案

可能不是最干净"的方法，但将它们设置为选项应该可行:
--> http://www.sinatrarb.com/configuration.html :)

设置:

set :foo, 'bar'

得到:

"foo 设置为" + settings.foo

Take the following code:

### Dependencies
require 'rubygems'
require 'sinatra'
require 'datamapper'

### Configuration
config = YAML::load(File.read('config.yml'))

name = config['config']['name']
description = config['config']['description']
username = config['config']['username']
password = config['config']['password']
theme = config['config']['theme']

set :public, 'views/themes/#{theme}/static'

### Models
DataMapper.setup(:default, "sqlite3://#{Dir.pwd}/marvin.db")

class Post
  include DataMapper::Resource
  property :id, Serial
  property :name, String
  property :body, Text
  property :created_at, DateTime
  property :slug, String
end

class Page
  include DataMapper::Resource
  property :id, Serial
  property :name, String
  property :body, Text
  property :slug, String
end

DataMapper.auto_migrate!

### Controllers
get '/' do
  @posts = Post.get(:order => [ :id_desc ])
  haml :"themes/#{theme}/index"
end

get '/:year/:month/:day/:slug' do
  year = params[:year]
  month = params[:month]
  day = params[:day]
  slug = params[:slug]

  haml :"themes/#{theme}/post.haml"
end

get '/:slug' do
  haml :"themes/#{theme}/page.haml"
end

get '/admin' do
  haml :"admin/index.haml"
end

I want to make name, and all those variables available to the entire script, as well as the views. I tried making them global variables, but no dice.

解决方案

Might not be the "cleanest" way to do it, but setting them as options should work:
--> http://www.sinatrarb.com/configuration.html :)

setting:

set :foo, 'bar'

getting:

"foo is set to " + settings.foo

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