Flex on Rails 实例(一)

以下的例子我们在ubuntu下,(例子引用Manning.Flexible.Rails)
netbeans6.1 +rails2.1+Flex3 SDK+ruby1.86环境下执行

创建一个项目命名为:pomodo
~/NetBeansProjects$ rails pomodo
~/NetBeansProjects$ cd pomodo
~/NetBeansProjects/pomodo$ rake rails:freeze:gems
项目创建好了,rails版本也lock了

下面使用一个restful_authentication插件
~/NetBeansProjects/pomodo$ ./script/plugin install -r 3072 http://svn.techno-weenie.net/projects/plugins/restful_authentication/

+ ./README
+ ./Rakefile
+ ./generators/authenticated/USAGE
...output omitted...

确定已经显示以上信息,这个插件是创建用户登录功能的
下面我们通过插件生成了user和sessions
~/NetBeansProjects/pomodo$./script/generate authenticated user sessions
修改user的迁移文件
           db\migrate\20081007123744_create_users.rb

class CreateUsers < ActiveRecord::Migration
  def self.up
    create_table "users", :force => true do |t|
      t.column :login,                     :string
      t.column :email,                     :string
      t.column :first_name,                :string, :limit  => 80
      t.column :last_name,                 :string, :limit  => 80
      t.column :crypted_password,           :string, :limit => 40
      t.column :salt,                       :string, :limit => 40
      t.column :created_at,                :datetime
      t.column :updated_at,                :datetime
      t.column :remember_token,             :string
      t.column :remember_token_expires_at, :datetime
    end
  end
  def self.down
    drop_table "users"
  end
end

修改数据库配置文件
database.yml

development:
  adapter: mysql
  encoding: utf8
  database: pomodo_development
  username: root(输入自己正确的mysql用户名)
  password: root(输入自己正确的mysql密码)
  socket: /var/run/mysqld/mysqld.sock

迁移文件
~/NetBeansProjects/pomodo$rake db:create:all (创建数据库)
~/NetBeansProjects/pomodo$rake db:migrate(执行迁移)
~/NetBeansProjects/pomodo$ mysql -uroot -p

mysql> show databases;
Database              |
+-----------------------+
| information_schema    |
| mysql                 |
| omdb_dev              |
| pomodo_development    |
| pomodo_production     |
| pomodo_test   
mysql> use pomodo_development;
mysql> select * from users;


修改模型user,增加如下内容

app\models\user.rb
...
  # prevents a user from submitting a crafted form that bypasses
  # activation
  # anything else you want your user to change should be added
  # here.
  attr_accessible :login, :email, :password,
    :password_confirmation, :first_name, :last_name
...

增加 RESTful routes

config\routes.rb
ActionController::Routing::Routes.draw do |map|
  # The priority is based upon order of creation:
  # first created -> highest priority.
...
  # Sample resource route (maps HTTP verbs to controller actions
  # automatically):                          
  #   map.resources :products                              
  map.resources :users
  map.resource :session
signup URL
  map.signup '/signup', :controller => 'users',
    :action => login URL
  map.login '/login', :controller => 'sessions',
    :action => 'new'
logout URL
  map.logout '/logout', :controller => 'sessions',
    :action => 'destroy'
  # Sample resource route with options:
  #   map.resources :products,
  #     :member => { :short => :get, :toggle => :post },
  #     :collection => { :sold => :get }
...
end

Modifying the includes and before_filter
as instructed by the comments

app\controllers\sessions_controller.rb
app\controllers\users_controller.rb
分别在上面两个控制器中,删除include AuthenticatedSystem
把include AuthenticatedSystem加到app\controllers\application.rb

并将protect_from_forgery 注释

app\controllers\application.rb
# Filters added to this controller apply to all controllers in
# the application. Likewise, all the methods added will be
# available for all controllers.
class ApplicationController < ActionController::Base
  helper :all # include all helpers, all the time
  include AuthenticatedSystem                                      
  # See ActionController::RequestForgeryProtection for details
  # Uncomment the :secret if you're not using the cookie session
  # store
  # TODO - this will be uncommented once we explain sessions
  # in iteration 5.
  # protect_from_forgery
  # :secret => 'dd92c128b5358a710545b5e755694d57'
end

完成修改后启动web服务器,我们这里用默认的webrick
~/NetBeansProjects/pomodo$  ./script/server webrick
使用http://localhost:3000/signup 访问注册用户
http://localhost:3000/login 登录
,下篇将是详细介绍flex编译

你这还没有写完吧，这个只能说是“用estful Authentication插件来用户登录"的例子，期待你的完善。

这还没涉及到flex编译呢,下篇就是flex编译详解了

做 Flex 和 Rails 开发都有一段时间了，但是我现在还没来得及看那本 Flexible Rails, 真该翻翻了。