trustieforge/app/controllers/blogs_controller.rb

class BlogsController < ApplicationController
  before_filter :find_blog,:except => [:index,:create,:new,:set_homepage, :cancel_homepage]
  before_filter :find_user
  def index
    @article = BlogComment.new
    respond_to do |format|
      format.html {render :layout=>'new_base_user'}
    end
  end
  def create

  end
  def new

  end
  def show

  end
  def update

  end
  def destory

  end
  def edit

  end

  def set_homepage
    @blog = Blog.find(params[:id])
    @blog.update_attribute(:homepage_id, params[:article_id])
    redirect_to user_path(params[:user_id])
  end

  def cancel_homepage
    @blog = Blog.find(params[:id])
    @blog.update_attribute(:homepage_id, nil)
    redirect_to user_blogs_path(params[:user_id])
  end
  private
  def find_blog
    if params[:blog_id]
      @blog = Blog.find(params[:blog_id])
    else
      render_404
    end
    if @blog.nil?
      #如果某个user的blog不存在，那么就创建一条
      @blog = Blog.create(:name=>User.find(params[:id]).realname ,
                   :description=>'',
                   :author_id=>params[:id])
    end
  end

  def find_user
    @user = User.find(params[:user_id])
  end
end