#1 Rails Tutorial

Dec 11, 2011 | 31分钟 | 入门, 博客

通过一个极简单的博客例子，展示一些基本的Ruby on Rails特性和开发方法。

下载

涉及的一些代码:

Post Model:

              ruby
                    
        class Post < ActiveRecord::Base
  validates :title, :presence => true, :uniqueness => true
  validates :content, :presence => true

  has_many :comments
end
        
class Post < ActiveRecord::Base
  validates :title, :presence => true, :uniqueness => true
  validates :content, :presence => true

  has_many :comments
end

Comment Model:

              ruby
                    
        class Comment < ActiveRecord::Base
  belongs_to :post
end
        
class Comment < ActiveRecord::Base
  belongs_to :post
end

Comments Controller:

              ruby
                    
        class CommentsController < ApplicationController
  def create
    @post = Post.find(params[:post_id])
    @comment = @post.comments.new(params[:comment])
    redirect_to @post if @comment.save
  end
end
        
class CommentsController < ApplicationController
  def create
    @post = Post.find(params[:post_id])
    @comment = @post.comments.new(params[:comment])
    redirect_to @post if @comment.save
  end
end