参数out of range date创建操作异常，但更新工作正常

Question

我有一个表单，用户可以输入一个日期(例如03/18/2014):

= f.text_field :purchase_date, class: "form-control", placeholder: "mm/dd/yyyy"

当用户为一个新的Inventory对象提交表单时，我在Create操作中一直得到错误argument out of range。然而，如果我已经有一个现有的对象，我尝试更新它，它工作得很好。奇怪的是，我的put没有在服务器日志中输出任何东西。

def create
  puts "CREATE" # this line is not outputting anything
  purchase_date = inventory_params["purchase_date"].blank? ? Date.today : Date::strptime(inventory_params["purchase_date"], "%m/%d/%Y")
  @inventory = Inventory.create( name: inventory_params["name"],
                          purchase_price: purchase_price,
                          purchase_date: purchase_date,
                          serial: inventory_params["serial"].to_s,
                          description: inventory_params["description"].to_s,
                          product_type: inventory_params["product_type"].to_s,
                          current_location: inventory_params["current_location"].to_s,
                          vendor_id: inventory_params["vendor_id"],
                          team_id: current_team.id)

  redirect_to inventories_path
end
def update
  purchase_date = inventory_params["purchase_date"].blank? ? Date.today : Date::strptime(inventory_params["purchase_date"], "%m/%d/%Y")
  @inventory.update_attributes( name: inventory_params["name"],
                                purchase_price: purchase_price,
                                purchase_date: purchase_date,
                                serial: inventory_params["serial"],
                                description: inventory_params["description"],
                                product_type: inventory_params["product_type"],
                                current_location: inventory_params["current_location"],
                                vendor_id: inventory_params["vendor_id"]
                                )
  redirect_to inventory_path(@inventory)
end
private
def inventory_params
  params.require(:inventory).permit(:purchase_price, :purchase_date, :name, :serial, :description, :product_type, :current_location, :vendor_id)
end

我也设置了CanCan，但我不认为它会影响它:

class Ability
  include CanCan::Ability
  def initialize(user)
    user ||= User.new # guest user (not logged in)
    can [:create, :show, :destroy, :edit, :update], User, id: user.id
    can :create, Inventory
    can [:index, :show, :destroy, :edit, :update], Inventory do |inventory|
      user && (inventory.try(:team_id) == user.teams.first.id)
    end
  end
end

有人知道为什么当我尝试创建Inventory的新实例时，我一直得到一个异常吗?

更新:看起来如果我用两位数的日期，它就坏了。例如，3/1/2014工作，但3/11/2014中断…

Answer 1

只是为了让你下次少写几行。你写的内容相当于@inventory =

Inventory.create(inventory_params.merge({team_id: current_team.id}))

和

@inventory.update_attributes(inventory_params)

另外，我发现了你的错误，你写的是03/18/14(这意味着2003-18-14)，没有月18 !它不是用法语标准书写的:)

顺便说一下，如果你需要使用法语(或类似的)标准:请阅读http://guides.rubyonrails.org/i18n.html

并下载所需文件:https://github.com/svenfuchs/rails-i18n/blob/master/rails/locale/fr.yml

Answer 2

Cancan与Rails 4.0发生了冲突。修复了这个问题:

load_and_authorize_resource :except => [:create]