Ruby on rails NoMethodError at/orders/new未定义的方法'validate_on_create'；

我目前在/orders/new获得了一个

命名错误
未定义的#

的“创建时验证”方法。我的代码似乎很简单，应该是功能性的，但事实并非如此

笔记 在此错误之前，我在/orders/new处得到了错误

NoMethodError
未定义NilClass:Class的方法“model\u name”，因此我将@order的
表单更改为订单的
表单。新的

下面是我的代码：

订单/新订单
错误
NoMethodError at/orders/new
未定义的方法“在创建时验证”#
Order.method_缺失
activerecord（3.2.13）lib/active_record/dynamic_matchers.rb，第55行
app/models/order.rb，第8行
app/models/order.rb，第1行
ActiveSupport:：Dependencies.load\u文件中的块
activesupport（3.2.13）lib/active_support/dependencies.rb，第469行
ActiveSupport:：Dependencies.new_constants_in
activesupport（3.2.13）lib/active_support/dependencies.rb，第639行
ActiveSupport:：Dependencies.load\u文件
activesupport（3.2.13）lib/active_support/dependencies.rb，第468行
ActiveSupport:：Dependencies.require\u或\u load
activesupport（3.2.13）lib/active_support/dependencies.rb，第353行
ActiveSupport:：Dependencies.load\u缺少\u常量
activesupport（3.2.13）lib/active_support/dependencies.rb，第502行
Object.const_中的块丢失
activesupport（3.2.13）lib/active_support/dependencies.rb，第192行
Object.const_丢失
activesupport（3.2.13）lib/active_support/dependencies.rb，第190行
ActiveSupport:：Dependencies.load\u缺少\u常量
activesupport（3.2.13）lib/active_support/dependencies.rb，第514行
ActionView.const_中的块丢失
activesupport（3.2.13）lib/active_support/dependencies.rb，第192行
ActionView.const_缺失
activesupport（3.2.13）lib/active_support/dependencies.rb，第190行
ActiveSupport:：Dependencies.load\u缺少\u常量
activesupport（3.2.13）lib/active_support/dependencies.rb，第514行
ActionView中的块：：CompiledTemplates.const_缺失
activesupport（3.2.13）lib/active_support/dependencies.rb，第192行
ActionView:：CompiledTemplates.const_缺失
activesupport（3.2.13）lib/active_support/dependencies.rb，第190行
##_应用程序查看、订单、新增、html、erb、2575536509094834、41759220
app/views/orders/new.html.erb，第4行
ActionView中的块：：模板#渲染
actionpack（3.2.13）lib/action_view/template.rb，第145行
ActiveSupport:：Notifications.instrument
activesupport（3.2.13）lib/active_support/notifications.rb，第125行
ActionView:：模板#渲染
actionpack（3.2.13）lib/action_view/template.rb，第143行
ActionView:：TemplateRenderer#render_模板中的块（2级）
actionpack（3.2.13）lib/action_view/renderer/template_renderer.rb，第47行
ActionView中的块：：TemplateRenderer#仪器
actionpack（3.2.13）lib/action_view/renderer/abstract_renderer.rb，第38行
ActiveSupport:：Notifications.instrument中的块
activesupport（3.2.13）lib/active_support/notifications.rb，第123行
ActiveSupport:：Notifications:：Instrumenter#instrument
activesupport（3.2.13）lib/active_support/notifications/instrumenter.rb，第20行
ActiveSupport:：Notifications.instrument
activesupport（3.2.13）lib/active_support/notifications.rb，第123行
ActionView:：TemplateRenderer#仪器
actionpack（3.2.13）lib/action_view/renderer/abstract_renderer.rb，第38行
ActionView:：TemplateRenderer#render_模板中的块
actionpack（3.2.13）lib/action_view/renderer/template_renderer.rb，第46行

非常感谢您提供的任何见解。
在rails 2.0.3参考后，已删除创建上的验证

使用
validate:method\u name，：on=>：create

因此，对于您的情况，以下操作应该有效

validate :validate_card, :on => :create

class OrdersController < ApplicationController
  def new
          @order = Order.new
  end

  def create
          @order = current_cart.build_order(params[:order])
          @order.ip_address = request.remote_ip
          if @order.save
                  if @order.purchase
                          render :action => "success"
                  else
                          render :action => "failure"
                  end
          else
                  render :action => 'new'
          end
  end
end

class Order < ActiveRecord::Base
  attr_accessible :card_expires_on, :card_type, :cart_id, :first_name, :ip_address, :last_name
  belongs_to :cart
  has_many :transactions, :class_name => "OrderTransaction"

  attr_accessor :card_number, :card_verification

  validate_on_create :validate_card

  def purchase
          response = GATEWAY.purchase(price_in_cents, credit_card, purchase_options)
          transactions.create!(:action => "purchase", :amount => price_in_cents, :response => response)
          cart.update_attribute(:purchased_at, Time.now) if response.success?
          response.success?
  end

  def price_in_cents
          (cart.total_price*100).round
  end

  private

  def purchase_options
          {
                  :ip => ip_address,
                  :billing_address => {
                    :name     => "",
                    :address1 => "",
                    :city     => "",
                    :state    => "",
                    :country  => "",
                    :zip      => ""
                  }
          }
  end

  def validate_card
          unless credit_card.valid?
                  credit_card.errors.full_messages.each do |message|
                          errors.add_to_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

resources :carts
  resources :orders

  get 'cart' => 'carts#show', :as => 'current_cart'

NoMethodError at /orders/new
undefined method `validate_on_create' for #<Class:0x00000005104ca8>

Order.method_missing
activerecord (3.2.13) lib/active_record/dynamic_matchers.rb, line 55
<class:Order>
app/models/order.rb, line 8
<top (required)>
app/models/order.rb, line 1
block in ActiveSupport::Dependencies.load_file
activesupport (3.2.13) lib/active_support/dependencies.rb, line 469
ActiveSupport::Dependencies.new_constants_in
activesupport (3.2.13) lib/active_support/dependencies.rb, line 639
ActiveSupport::Dependencies.load_file
activesupport (3.2.13) lib/active_support/dependencies.rb, line 468
ActiveSupport::Dependencies.require_or_load
activesupport (3.2.13) lib/active_support/dependencies.rb, line 353
ActiveSupport::Dependencies.load_missing_constant
activesupport (3.2.13) lib/active_support/dependencies.rb, line 502
block in Object.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 192
Object.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 190
ActiveSupport::Dependencies.load_missing_constant
activesupport (3.2.13) lib/active_support/dependencies.rb, line 514
block in ActionView.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 192
ActionView.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 190
ActiveSupport::Dependencies.load_missing_constant
activesupport (3.2.13) lib/active_support/dependencies.rb, line 514
block in ActionView::CompiledTemplates.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 192
ActionView::CompiledTemplates.const_missing
activesupport (3.2.13) lib/active_support/dependencies.rb, line 190
#<Class:0x00000004d71be0>#_app_views_orders_new_html_erb___2575536509094394834_41759220
app/views/orders/new.html.erb, line 4
block in ActionView::Template#render
actionpack (3.2.13) lib/action_view/template.rb, line 145
ActiveSupport::Notifications.instrument
activesupport (3.2.13) lib/active_support/notifications.rb, line 125
ActionView::Template#render
actionpack (3.2.13) lib/action_view/template.rb, line 143
block (2 levels) in ActionView::TemplateRenderer#render_template
actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb, line 47
block in ActionView::TemplateRenderer#instrument
actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb, line 38
block in ActiveSupport::Notifications.instrument
activesupport (3.2.13) lib/active_support/notifications.rb, line 123
ActiveSupport::Notifications::Instrumenter#instrument
activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb, line 20
ActiveSupport::Notifications.instrument
activesupport (3.2.13) lib/active_support/notifications.rb, line 123
ActionView::TemplateRenderer#instrument
actionpack (3.2.13) lib/action_view/renderer/abstract_renderer.rb, line 38
block in ActionView::TemplateRenderer#render_template
actionpack (3.2.13) lib/action_view/renderer/template_renderer.rb, line 46

validate :validate_card, :on => :create