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我正在嘗試與活動商家創建結帳。我正在使用Ryan Bates Active商業教程/和敏捷web開發書。OrdersController中的NameError＃創建未定義的本地變量或方法`line_items'
我得到以下錯誤，我不確定如何解決它以創建成功的訂單。任何幫助深表感謝。
NameError in OrdersController#create
undefined local variable or method `line_items' for #<Order:0x007fcc467134b8>
Rails.root: /Users/macuser/rails_projects/listpro-a
Application Trace | Framework Trace | Full Trace
app/models/order.rb:33:in `block in add_line_items_from_cart'
app/models/order.rb:31:in `add_line_items_from_cart'
app/controllers/orders_controller.rb:33:in `create'
OrdersController
class OrdersController < ApplicationController
def index
@orders = Order.paginate :page=>params[:page], :order=>'created_at desc',
:per_page => 10
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @orders }
end
end
def new
@cart = current_cart
@order_total = current_cart.total_price
if @cart.line_items.empty?
redirect_to services_path, :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
def create
@order = current_cart.build_order(params[:order])
@order.ip_address = request.remote_ip
@order.add_line_items_from_cart(current_cart)
respond_to do |format|
if @order.save
if @order.purchase
Cart.destroy(session[:cart_id])
session[:cart_id] = nil
format.html { redirect_to(redirect_to new_listing_path, :notice => 'Thank you for your order.') }
format.xml { render :xml => @order, :status => :created, :location => @order }
else
render :action => "failure"
end
else
format.html { render :action => "new" }
format.xml { render :xml => @order.errors,
:status => :unprocessable_entity }
end
end
end
end
訂貨型號
class Order < ActiveRecord::Base
# PAYMENT_TYPES = [ "visa", "master card", "Amex", "Discover" ] Controll the payment options via Model
attr_accessible :card_expires_on, :card_type, :first_name, :ip_address, :last_name, :cart_id, :card_number, :card_verification
# belongs_to :user
# belongs_to :house
belongs_to :cart
has_many :transactions, :class_name => "OrderTransaction"
# has_many :line_items, :dependent => :destroy
attr_accessor :card_number, :card_verification
validate :validate_card, :on => :create
def purchase
response = GATEWAY.purchase(price_in_cents, credit_card)
transactions.create!(:action => "purchase", :amount => price_in_cents, :response => response)
# cart.update_attribute(:purchased_at, Time.now) if response.success?
response.success?
end
# Issue is here
def price_in_cents
(cart.total_price*100).round
end
def add_line_items_from_cart(cart)
cart.line_items.each do |item|
item.cart_id = nil
line_items << item
end
end
private
def validate_card
unless credit_card.valid?
credit_card.errors.full_messages.each do |message|
errors[:base] << message
end
end
end
def credit_card
@credit_card ||= ActiveMerchant::Billing::CreditCard.new(
:type => card_type,
:number => card_number,
:verification_value => card_verification,
:month => card_expires_on.month,
:year => card_expires_on.year,
:first_name => first_name,
:last_name => last_name
)
end
end
車型號
class Cart < ActiveRecord::Base
attr_accessible :purchased_at, :house_id, :user_id
has_many :line_items # , :dependent => :destroy
has_one :order
# has_many :services, :through => :line_items
# belongs_to :user
def total_price
# convert to array so it doesn't try to do sum on database directly
line_items.to_a.sum { |line_item| line_item.total_price }
end
def add_service(service_id)
current_item = line_items.find_by_service_id(service_id)
if current_item
# render current cart with flash " you already have this service"
else
current_item = line_items.build(:service_id => service_id)
end
current_item
end
end
應用控制器
class ApplicationController < ActionController::Base
protect_from_forgery
rescue_from CanCan::AccessDenied do |exception|
redirect_to root_path, :alert => exception.message
end
helper :all
private
def current_cart
Cart.find(session[:cart_id])
rescue ActiveRecord::RecordNotFound
cart = Cart.create(:user_id => current_user.id)
session[:cart_id] = cart.id
cart
end
DB模式
create_table "carts", :force => true do |t|
t.integer "user_id"
t.datetime "purchased_at"
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
end
create_table "order_transactions", :force => true do |t|
t.integer "order_id"
t.string "action"
t.integer "amount"
t.boolean "success"
t.string "authorization"
t.string "message"
t.text "params"
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
end
create_table "orders", :force => true do |t|
t.integer "cart_id"
t.string "ip_address"
t.string "first_name"
t.string "last_name"
t.string "card_type"
t.integer "house_id"
t.integer "user_id"
t.date "card_expires_on"
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
end