overture8

<%= csrf_meta_tag %>

overture8

:!!

overture8

irb(main):004:0> b = Book.new
irb(main):004:0> b.read
=> "reading book..."
irb(main):004:0> b.go_to_page(101)
=> "Going to page 101"

overture8

class Book
  def read
    puts "reading book..."
  end

  def go_to_page(page_no)
    puts "Going to page #{page_no}"
  end
end

overture8

:! irb -r %

overture8

class Application < Rails::Application
  config.middleware.use Rack::Codehighlighter, :coderay, :element => "pre", :pattern => /\A:::(\w+)\s*\n/
  .
  .
  .
end 

overture8

# Middleware
use Rack::Codehighlighter, :coderay, :element => "pre", :pattern => /\A:::(\w+)\s*\n/

require ::File.expand_path('../config/environment',  __FILE__)
run Test3app::Application

overture8

class CommentsController < ApplicationController
  respond_to :html, :xml, :js

  def create
    post = Post.find(params[:post_id])
    @comment = post.comments.build(params[:comment])
    if @comment.save
      respond_with(@comment)
    end
  end

overture8

$('comments').insert( { bottom: "<%= escape_javascript(render @comment) %>" } ); // Insert the _comment partial at the bottom of the comments list
$$('.comment').last().highlight(); // Highlight the last comment (the one you just inserted!)
$('comment_body').clear(); // Clear the form text area

overture8

<div id="comments">
  <%= render @post.comments %>
</div>

<% form_for [@post, Comment.new], :remote => true do |f| %>
  <%= f.label :body %><br />
  <%= f.text_area :body, :rows => 5 %><br />
  <%= f.submit %>
<% end %>