rails-controller-router

# in config/routes.rb
RailsSampleApp::Application.routes.draw do
  resources :posts
  #   SHORTCUT VERB   ROUTE                     CONTROLLER#ACTION
  #      posts GET    /posts(.:format)          posts#index
  #            POST   /posts(.:format)          posts#create
  #   new_post GET    /posts/new(.:format)      posts#new
  #  edit_post GET    /posts/:id/edit(.:format) posts#edit
  #       post GET    /posts/:id(.:format)      posts#show
  #            PUT    /posts/:id(.:format)      posts#update
  #            DELETE /posts/:id(.:format)      posts#destroy
  
  
# in app/controllers/posts_controller.rb
class PostsController < ApplicationController
  # GET /posts
  def index
    @posts = Post.all
  end

  # GET /posts/1
  def show
    @post = Post.find(params[:id])
  end

  # GET /posts/new
  def new
    @post = Post.new
  end

  # GET /posts/1/edit
  def edit
    @post = Post.find(params[:id])
  end

  # POST /posts
  def create
    @post = Post.new(params[:post])
    redirect_to @post
  end

  # PUT /posts/1
  def update
    @post = Post.find(params[:id])
  end

  # DELETE /posts/1
  def destroy
    @post = Post.find(params[:id])
    @post.destroy
    redirect_to "/posts"
  end
end