posts_controller.rb

class PostsController < ApplicationController                                                                                                 
  before_filter :find_forum
  before_filter :find_post,  :except => [:index, :new, :create]
 
  def index
    @posts = @forum.posts
  end 
  
  def show
  end 
 
  def new 
    @post = @forum.posts.build
  end 
 
  def create
    @post = @forum.posts.build(params[:post])
    if @post.save
      redirect_to forum_post_path(@forum, @post)
    else
      render :new
    end 
  end 
 
  def edit
  end 
 
  def update
    if @post.update_attribute(params[:post])
      redirect_to forum_post_path(@forum, @post)
    else
      render :edit
    end 
  end 
 
  def destroy
    @post.destroy
    redirect_to forum_posts_path(@forum)
  end 
 
  protected
  def find_forum
    @forum = Forum.find(params[:forum_id])
  end
   
  def find_post
    @post = @forum.posts.find(params[:id])
  end
end