12.2 Iteration G2: Atom Feeds 11.5 Iteration F5: Testing AJAX changes
rails generate scaffold Order name:string address:text email:string pay_type:string
invoke active_record
create db/migrate/20100606143729_create_orders.rb
create app/models/order.rb
invoke test_unit
create test/unit/order_test.rb
create test/fixtures/orders.yml
route resources :orders
invoke scaffold_controller
create app/controllers/orders_controller.rb
invoke erb
create app/views/orders
create app/views/orders/index.html.erb
create app/views/orders/edit.html.erb
create app/views/orders/show.html.erb
create app/views/orders/new.html.erb
create app/views/orders/_form.html.erb
invoke test_unit
create test/functional/orders_controller_test.rb
invoke helper
create app/helpers/orders_helper.rb
invoke test_unit
create test/unit/helpers/orders_helper_test.rb
invoke stylesheets
identical public/stylesheets/scaffold.css
edit db/migrate/20100606143729_create_orders.rb
def self.up
create_table :orders do |t|
t.string :name
t.text :address
t.string :email
t.string :pay_type, :limit => 10
t.timestamps
end
end
rails generate migration add_order_id_to_line_item order_id:integer
invoke active_record
create db/migrate/20100606143733_add_order_id_to_line_item.rb
rake db:migrate
mv 20100606143729_create_orders.rb 20100301000006_create_orders.rb
mv 20100606143733_add_order_id_to_line_item.rb 20100301000007_add_order_id_to_line_item.rb
(in /home/rubys/svn/rails4/Book/util/work-193/depot)
== CreateOrders: migrating ===================================================
-- create_table(:orders)
-> 0.0019s
== CreateOrders: migrated (0.0020s) ==========================================
== AddOrderIdToLineItem: migrating ===========================================
-- add_column(:line_items, :order_id, :integer)
-> 0.0010s
== AddOrderIdToLineItem: migrated (0.0011s) ==================================
sqlite3 db/development.sqlite3 .schema
CREATE TABLE "carts" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "created_at" datetime, "updated_at" datetime);
CREATE TABLE "line_items" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "product_id" integer, "cart_id" integer, "created_at" datetime, "updated_at" datetime, "quantity" integer DEFAULT 1, "order_id" integer);
CREATE TABLE "orders" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "name" varchar(255), "address" text, "email" varchar(255), "pay_type" varchar(10), "created_at" datetime, "updated_at" datetime);
CREATE TABLE "products" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "title" varchar(255), "description" text, "image_url" varchar(255), "price" decimal(8,2), "created_at" datetime, "updated_at" datetime);
CREATE TABLE "schema_migrations" ("version" varchar(255) NOT NULL);
CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version");
edit app/models/order.rb
class Order < ActiveRecord::Base
has_many :line_items, :dependent => :destroy
end
edit app/models/line_item.rb
edit app/views/carts/_cart.html.erb
<div class="cart_title">Your Cart</div>
<table>
<%= render(cart.line_items) %>
<tr class="total_line">
<td colspan="2">Total</td>
<td class="total_cell"><%= number_to_currency(cart.total_price) %></td>
</tr>
</table>
<%= button_to "Checkout", new_order_url, :method=>:get %>
<%= button_to 'Empty cart', cart, :method => :delete,
:confirm => 'Are you sure?' %>
edit app/controllers/orders_controller.rb
def new
if find_or_create_cart.line_items.empty?
redirect_to store_url, :notice => "Your cart is empty"
return
end
@order = Order.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @order }
end
end
edit app/views/orders/new.html.erb
<div class="depot_form">
<fieldset>
<legend>Please Enter Your Details</legend>
<%= render 'form' %>
</fieldset>
</div>
edit app/views/orders/_form.html.erb
<%= form_for @order do |f| %>
<% if @order.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@order.errors.count, "error") %>
prohibited this order from being saved:</h2>
<ul>
<% @order.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div>
<%= f.label :name, "Name:" %>
<%= f.text_field :name, :size => 40 %>
</div>
<div>
<%= f.label :address, "Address:" %>
<%= f.text_area :address, :rows => 3, :cols => 40 %>
</div>
<div>
<%= f.label :email, "E-Mail:" %>
<%= f.text_field :email, :size => 40 %>
</div>
<div>
<%= f.label :pay_type, "Pay with:" %>
<%=
f.select :pay_type,
Order::PAYMENT_TYPES,
:prompt => "Select a payment method"
%>
</div>
<%= f.submit "Place Order" %>
<% end %>
edit app/models/order.rb
class Order < ActiveRecord::Base
PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order" ]
# ...
edit public/stylesheets/depot.css
/* Styles for order form */
.depot_form fieldset {
background: #efe;
}
.depot_form legend {
color: #dfd;
background: #141;
font-family: sans-serif;
padding: 0.2em 1em;
}
.depot_form label {
width: 5em;
float: left;
text-align: right;
padding-top: 0.2em;
margin-right: 0.1em;
display: block;
}
.depot_form select, .depot_form textarea, .depot_form input {
margin-left: 0.5em;
}
.depot_form .submit {
margin-left: 4em;
}
.depot_form div {
margin: 0.5em 0;
}
edit app/models/order.rb
class Order < ActiveRecord::Base
PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order" ]
validates :name, :address, :email, :pay_type, :presence => true
validates :pay_type, :inclusion => PAYMENT_TYPES
# ...
edit app/controllers/orders_controller.rb
def create
@order = Order.new(params[:order])
@order.add_line_items_from_cart(find_or_create_cart)
respond_to do |format|
if @order.save
Cart.destroy(session[:cart_id])
session[:cart_id] = nil
format.html { redirect_to(store_url, :notice =>
'Thank you for your order.') }
format.xml { render :xml => @order, :status => :created,
:location => @order }
else
format.html { render :action => "new" }
format.xml { render :xml => @order.errors,
:status => :unprocessable_entity }
end
end
end
edit app/models/order.rb
class Order < ActiveRecord::Base
PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order" ]
# ...
validates :name, :address, :email, :pay_type, :presence => true
validates :pay_type, :inclusion => PAYMENT_TYPES
# ...
has_many :line_items, :dependent => :destroy
def add_line_items_from_cart(cart)
cart.line_items.each do |item|
item.cart_id = nil
line_items << item
end
end
end
get /orders/new
post /orders
sqlite3> select * from orders
sqlite3> select * from line_items
id = 10
product_id = 3
cart_id = 3
created_at = 2010-06-06 14:36:49.301327
updated_at = 2010-06-06 14:36:49.301327
quantity = 1
order_id =
get /orders/new
post /orders
get http://localhost:3000/
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sqlite3> select * from orders
id = 1
name = Dave Thomas
address = 123 Main St
email = customer@example.com
pay_type = Check
created_at = 2010-06-06 14:37:41.822634
updated_at = 2010-06-06 14:37:41.822634
sqlite3> select * from line_items
id = 10
product_id = 3
cart_id =
created_at = 2010-06-06 14:36:49.301327
updated_at = 2010-06-06 14:37:41.838448
quantity = 1
order_id = 1
edit app/views/line_items/create.js.rjs
page.select("div#notice").each { |div| div.hide }
page.replace_html('cart', render(@cart))
page[:cart].visual_effect :blind_down if @cart.total_items == 1
page[:current_item].visual_effect :highlight,
:startcolor => "#88ff88",
:endcolor => "#114411"
12.2 Iteration G2: Atom Feeds 11.5 Iteration F5: Testing AJAX changes