ROR站内短信教程

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Rails Java SVN Flash ActiveRecord

前提: 安装 Rails 2.0.2

新建Rails项目

$ rails messenger

新建模型

$ script/generate model message author_id:integer subject:string body:text
$ script/generate model message_copy recipient_id:integer message_id:integer folder_id:integer
$ script/generate model folder user_id:integer parent_id:integer name:string

安装插件 restful_authentication, scope_out, acts_as_tree and will_paginate

$ script/plugin install http://svn.techno-weenie.net/projects/plugins/restful_authentication
$ script/generate authenticated user sessions
$ script/plugin install acts_as_tree
$ script/plugin install http://scope-out-rails.googlecode.com/svn/trunk/
$ script/plugin install svn://errtheblog.com/svn/plugins/will_paginate
$ rake db:migrate

设置表间关联

class Message < ActiveRecord::Base
  belongs_to :author, :class_name => "User"
  has_many :message_copies
  has_many :recipients, :through => :message_copies
  before_create :prepare_copies
  
  attr_accessor  :to # array of people to send to
  attr_accessible :subject, :body, :to
  
  def prepare_copies
    return if to.blank?
    
    to.each do |recipient|
      recipient = User.find(recipient)
      message_copies.build(:recipient_id => recipient.id, :folder_id => recipient.inbox.id)
    end
  end
end

class MessageCopy < ActiveRecord::Base
  belongs_to :message
  belongs_to :recipient, :class_name => "User"
  belongs_to :folder
  delegate   :author, :created_at, :subject, :body, :recipients, :to => :message
end

class Folder < ActiveRecord::Base
  acts_as_tree
  belongs_to :user
  has_many :messages, :class_name => "MessageCopy"
end

修改User模型

  has_many :sent_messages, :class_name => "Message", :foreign_key => "author_id"
  has_many :received_messages, :class_name => "MessageCopy", :foreign_key => "recipient_id"
  has_many :folders

  before_create :build_inbox

  def inbox
    folders.find_by_name("收件箱")
  end

  def build_inbox
    folders.build(:name => "收件箱")
  end
  # (Autogenerated restful_authentication code remains here)

新建控制及页面

$ script/generate controller sent index show new
$ script/generate controller messages show
$ script/generate controller mailbox show

修改路由

ActionController::Routing::Routes.draw do |map|
  map.resources :users, :sent, :mailbox
  map.resources :messages, :member => { :reply => :get }
  map.resource :session
  
  # Home route leads to inbox
  map.inbox '', :controller => "mailbox", :action => "index"
  
  # Install the default routes as the lowest priority.
  map.connect ':controller/:action/:id'
  map.connect ':controller/:action/:id.:format'
end

修改控制及页面

class SentController < ApplicationController
  def index
    @messages = current_user.sent_messages.paginate :per_page => 10, :page => params[:page], :order => "created_at DESC"
  end

  def show
    @message = current_user.sent_messages.find(params[:id])
  end

  def new
    @message = current_user.sent_messages.build
  end
  
  def create
    @message = current_user.sent_messages.build(params[:message])
    
    if @message.save
      flash[:notice] = "Message sent."
      redirect_to :action => "index"
    else
      render :action => "new"
    end
  end
end

=== file: app/views/layouts/application.html.erb ===

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
  <head>
    <title>Rails Messenger</title>
  </head>
  
  <body>
    <h1>Rails Messenger</h1>
    
    <% if flash[:notice] %>
      <p style="color:green"><%= flash[:notice] %></p>
    <% end %>
    
    <% if flash[:error] %>
      <p style="color:red"><%= flash[:error] %></p>
    <% end %>
    
    <% if logged_in? %>
      <p>Welcome, <%=h current_user.login %>. <%= link_to "Logout", session_path, :method => "delete" %></p>
    <% else %>
      <p>You are not logged in. <%= link_to "Register", new_user_path %> or <%= link_to "Login", new_session_path %></p>
    <% end %>
    
    <%= render :partial => "layouts/mailbox_list" if logged_in? %>
    
    <%= yield %>
  </body>
</html>

=== file: app/views/layouts/_mailbox_list.html.erb ===

<div id="mailbox_list" style="border:1px solid #aaa; float:right; margin:1em; padding:1em; width:20%">
  <p><%= link_to "Compose", new_sent_path %></p>
  
  <p><strong>Mailboxes</strong></p>
  <ul>
    <li><%= link_to "Inbox", inbox_path %></li>
    <li><%= link_to "Sent", :controller => "sent", :action => "index" %></li>
  </ul>
</div>

=== file: app/views/sent/new.html.erb ===

<h2>Compose</h2>

<% form_for :message, :url => {:controller => "sent", :action => "create"} do |f| %>

  <p>
    To:<br />
    <select name="message[to][]">
      <%= options_from_collection_for_select(User.find(:all), :id, :login, @message.to) %>
    </select>
  </p>

  <p>Subject: <%= f.text_field :subject %></p>
  <p>Body:<br /> <%= f.text_area :body %></p>
  <p><%= submit_tag "Send" %></p>
<% end %>

=== file: app/views/sent/index.html.erb ===

    <h2>Sent Messages</h2>

    <table border="1">
      <tr>
        <th>To</th>
        <th>Subject</th>
        <th>Sent</th>
      </tr>

      <% for message in @messages %>
        <tr>
          <td><%=h message.recipients.map(&:login).to_sentence %></td>
          <td><%= link_to h(message.subject), sent_path(message) %></td>
          <td><%= distance_of_time_in_words(message.created_at, Time.now) %> ago</td>
        </tr>
      <% end %>
    </table>

    <%= will_paginate @messages %>

=== file: app/views/sent/show.html.erb ===

<h2>Sent: <%=h(@message.subject) %></h2>
<p><strong>To:</strong> <%= @message.recipients.map(&:login).to_sentence %></p>
<p><strong>Sent:</strong> <%= @message.created_at.to_s(:long) %></p>

<pre><%=h @message.body %></pre>

=== file: app/controllers/mailbox_controller.rb ===
    
class MailboxController < ApplicationController
  def index
    redirect_to new_session_path and return unless logged_in?
    @folder = current_user.inbox
    show
    render :action => "show"
  end

  def show
    @folder ||= current_user.folders.find(params[:id])
    @messages = @folder.messages.paginate :per_page => 10, :page => params[:page], :include => :message, :order => "messages.created_at DESC"
  end
end
=== file: app/vies/mailbox/show.html.erb ===

<h2><%=h @folder.name %></h2>

<table border="1">
  <tr>
    <th>From</th>
    <th>Subject</th>
    <th>Received</th>
  </tr>
  
  <% for message in @messages %>
    <tr>
      <td><%=h message.author.login %></td>
      <td><%= link_to h(message.subject), message_path(message) %></td>
      <td><%= distance_of_time_in_words(message.created_at, Time.now) %> ago</td>
    </tr>
  <% end %>
</table>

<%= will_paginate @messages %>

=== file: app/controllers/messages_controller.rb ===
class MessagesController < ApplicationController
 def show
    @message = current_user.received_messages.find(params[:id])
  end
  
  def reply
    @original = current_user.received_messages.find(params[:id])
    
    subject = @original.subject.sub(/^(Re: )?/, "Re: ")
    body = @original.body.gsub(/^/, "> ")
    @message = current_user.sent_messages.build(:to => [@original.author.id], :subject => subject, :body => body)
    render :template => "sent/new"
  end
end

=== file: app/views/messages/show.html.erb ===

<h2><%=h @message.subject %></h2>

<p><strong>From:</strong> <%=h @message.author.login %></p>
<p><strong>To:</strong> <%=h @message.recipients.map(&:login).to_sentence %></p>
<p><strong>Received:</strong> <%= @message.created_at.to_s(:long) %></p>

<pre><%=h @message.body %></pre>

=== file: app/views/messages/show.html.erb ===

<h2><%=h @message.subject %></h2>

<p><strong>From:</strong> <%=h @message.author.login %></p>
<p><strong>To:</strong> <%=h @message.recipients.map(&:login).to_sentence %></p>
<p><strong>Received:</strong> <%= @message.created_at.to_s(:long) %></p>

<pre><%=h @message.body %></pre>

<p><%= link_to "Reply", reply_message_path(@message) %></p>

具体还有一些删除、全部回复请参考原文
http://www.novawave.net/public/rails_messaging_tutorial.html

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修改Rails主页路由容易忘做的事 | ROR的二维码插件

2008-04-21 11:21
浏览 2877
评论(3)
查看更多

3 楼司徒正美 2009-03-18

named_scope就是那个scope-out！

2 楼 zhuangj 2008-08-19

少了一个logged_in方法, 一个current_user对象

1 楼 cxhnihaoa 2008-07-10

怎么没有源码下载,按照上面操作,有错识呢.

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