The following application represents a typical pre-Rails 2.0 blog application, similar to David Heinemeier Hansson's--the creator and architect of Ruby on Rails-- famous "15 Minute Blog" demonstration. You'll note that many things have been removed for the sake of brevity. Features like pagination, notice messages and so forth have been removed but do not effect the function of the application.
It's assumed that this Rails application was generated with a version of Rails before 2.0. This means features like protect_from_forgery are not enabled and normal routes are used instead of RESTful resources. Though Rails 2.0 and later versions do not generally suffer from such problems, projects ported from earlier versions of Rails often do.
# File: app/controllers/posts_controller.rb
class PostsController < ApplicationController
before_filter :login_required, :except => [ :index, :show ]
def index
@posts = Post.find :all
end
def new
@post = Post.new
end
def create
@post = Post.new(params[:post])
@post.user = current_user
if( @post.save )
flash[:notice] = "Post created."
redirect_to :action => 'show',
:id => @post.id
else
render :action => 'new'
end
end
def edit
@post = Post.find(params[:id])
end
def update
@post = Post.find(params[:id])
if( @post.update_attributes params[:post] )
flash[:notice] = "Post updated."
redirect_to :action => 'show',
:id => @post.id
else
render :action => 'edit'
end
end
def show
@post = Post.find(params[:id])
end
def destroy
@post = Post.find(params[:id])
@post.destroy
flash[:notice] = "Post destroyed."
redirect_to :action => 'index'
end
end
# File: app/controllers/application.rb
class ApplicationController < ActionController::Base
include AuthenticatedSystem
end
# File: app/models/post.rb
class Post < ActiveRecord::Base
belongs_to :user
validates_presence_of :title, :body
validates_length_of :title, :within => 3..100
end
# File: config/routes.rb
ActionController::Routing::Routes.draw do |map|
map.connect ':controller/:action/:id'
end
