12.4 Playtime 12.2 Iteration G2: Atom Feeds
demonstrate streaming with ActionController::Live
add a route for downloading a product
edit config/routes.rb
Rails.application.routes.draw do
resources :orders
resources :line_items
resources :carts
get 'store/index'
resources :products do
get :download, :on => :member
get :who_bought, on: :member
end
# For details on the DSL available within this file, see
# http://guides.rubyonrails.org/routing.html
# Serve websocket cable requests in-process
# mount ActionCable.server => '/cable'
root 'store#index', as: 'store'
end
mock streaming implementation for download
edit app/controllers/products_controller.rb
include ActionController::Live
def download
response.headers['Content-Type'] = 'text/plain'
40.times do |i|
response.stream.write "Line #{i}\n\n"
sleep 0.10
end
response.stream.write "Fini.\n"
ensure
response.stream.close
end
add order to the session
edit app/controllers/orders_controller.rb
def create
@order = Order.new(order_params)
@order.add_line_items_from_cart(@cart)
respond_to do |format|
if @order.save
Cart.destroy(session[:cart_id])
session[:cart_id] = nil
session[:order_id] = @order.id
format.html { redirect_to store_url, notice:
'Thank you for your order.' }
format.json { render :show, status: :created,
location: @order }
else
format.html { render :new }
format.json { render json: @order.errors,
status: :unprocessable_entity }
end
end
end
render order in the side bar
edit app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title>Pragprog Books Online Store</title>
<%= stylesheet_link_tag "application", media: "all",
"data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>
</head>
<body class="<%= controller.controller_name %>">
<div id="banner">
<%= image_tag("logo.png") %>
<span class="title"><%= @page_title || "Pragmatic Bookshelf" %></span>
</div>
<div id="columns">
<div id="side">
<% if @cart %>
<%= hidden_div_if(@cart.line_items.empty?, id: 'cart') do %>
<%= render @cart %>
<% end %>
<% end %>
<%= render Order.find(session[:order_id]) if session[:order_id] -%>
<ul>
<li><a href="http://www....">Home</a></li>
<li><a href="http://www..../faq">Questions</a></li>
<li><a href="http://www..../news">News</a></li>
<li><a href="http://www..../contact">Contact</a></li>
</ul>
</div>
<div id="main">
<%= yield %>
</div>
</div>
</body>
</html>
implement order partial
edit app/views/orders/_order.html.erb
<div id="order">
<h2>Your Downloads</h2>
<table data-no-turbolink>
<% order.line_items.each do |item| %>
<tr>
<td><%= link_to item.product.title, download_product_path(item.product) %></td>
</tr>
<% end %>
</table>
</div>
css tweaks
edit app/assets/stylesheets/application.scss
#side {
padding: 1em 2em;
background: #141;
form, div {
display: inline;
}
input {
font-size: small;
}
#cart, #order {
font-size: smaller;
color: white;
a, a:hover {
color: white;
background-color: #141;
}
table {
border-top: 1px dotted #595;
border-bottom: 1px dotted #595;
margin-bottom: 10px;
}
}
ul {
padding: 0;
li {
list-style: none;
a {
color: #bfb;
font-size: small;
}
}
}
}
place an order
get /
Pragmatic Bookshelf
CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code.
Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox.
Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.
post /line_items?product_id=2
get http://localhost:3000/
Pragmatic Bookshelf
CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code.
Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox.
Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.
get /orders/new
post /orders
get http://localhost:3000/
Pragmatic Bookshelf
| CoffeeScript |
Thank you for your order.
CoffeeScript is JavaScript done right. It provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax. In the first book on this exciting new language, CoffeeScript guru Trevor Burnham shows you how to hold onto all the power and flexibility of JavaScript while writing clearer, cleaner, and safer code.
Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox.
Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.
click download
get /products/2/download
cleanup - precompile assets for inclusion in results
rails assets:precompile
I, [2016-05-06T21:44:44.968243 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/cs-f56ef62bc41b040664e801a38f068082a75d506d9048307e8096737463503d0b.jpg
I, [2016-05-06T21:44:44.969304 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/logo-c6cc13d09c4262e637d9af74fa20f7cc0ba8cb57864863b3ce3135f37cbf308c.png
I, [2016-05-06T21:44:44.970128 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/rails-5ad6d454af23f597c4c39dbe4ec6e12784f8e382997a4bc04944ab8547d48881.png
I, [2016-05-06T21:44:44.971137 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/rtp-d3d2240713cce773840785de837acf822d235d1b77040a3e1ed9d8c014cff086.jpg
I, [2016-05-06T21:44:44.971906 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/ruby-836fee16e3757bcd4e2c21d064eee4fa81d7f93e4e9a44b1ffcd6c1d41c92a88.jpg
I, [2016-05-06T21:44:45.030824 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/application-c3bf8f6f4fe2195a9e9e6ab386624ea1ad8c0ba319310b5bb657f18d4a82c9cd.js
I, [2016-05-06T21:44:45.030970 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/application-c3bf8f6f4fe2195a9e9e6ab386624ea1ad8c0ba319310b5bb657f18d4a82c9cd.js.gz
I, [2016-05-06T21:44:45.053969 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/application-eb0662fc4ec6d1bf2c876be25e4007dfc57bdbf1ff75633b227250b68d818115.css
I, [2016-05-06T21:44:45.054136 #4904] INFO -- : Writing /home/rubys/git/awdwr/edition4/work-224-500beta3/depot/public/assets/application-eb0662fc4ec6d1bf2c876be25e4007dfc57bdbf1ff75633b227250b68d818115.css.gz
make sure that nothing is broken
rails test
Run options: --seed 33969
# Running:
........................................
Finished in 0.653140s, 61.2426 runs/s, 140.8580 assertions/s.
40 runs, 92 assertions, 0 failures, 0 errors, 0 skips