无法以多步形式批量分配受保护的属性

时间:2013-04-29 12:19:44

标签: ruby-on-rails nested-forms nested-attributes

我正在做一些我认为非常简单的事情,最终变得非常复杂。我已按照此Railscasts创建了一个多步骤表单。现在我正在尝试在Order视图中嵌套表单以创建父Customer(如果其中尚未存在)(请参阅this问题)。

基本上,我希望创建一个客户来拥有订单(如果它们尚不存在)。我是以错误的方式解决这个问题吗?

目前,我得到了

  

无法批量分配受保护的属性:customer_attributes

当我有订单belongs_to :customers时。但那对我来说似乎最合乎逻辑?我把代码放在下面。

客户模式:

class Customer < ActiveRecord::Base
  attr_accessible :address_1, :address_2, :email, :name, :phone, :user_id

  belongs_to :user
end

订单型号:

class Order < ActiveRecord::Base
  attr_accessible :customer_id, :format, :message, :phone, :quantity

  belongs_to :customer
  accepts_nested_attributes_for :customer
  attr_writer :current_step

...

相关订单控制器方法:

  # GET /orders/new
  # GET /orders/new.json
  def new
    session[:order_params] ||= {}
    @order = Order.new(session[:order_params])
    @order.build_customer(session[:order_params])
    @order.current_step = session[:order_step]
  end

  # POST /orders
  # POST /orders.json
  def create
    session[:order_params].deep_merge!(params[:order]) if params[:order]
    @order = Order.new(session[:order_params])
    @order.current_step = session[:order_step]
    if params[:back_button]
      @order.previous_step
    elsif @order.last_step?
      @order.save
    else
      @order.next_step
    end
    session[:order_step] = @order.current_step

    if @order.new_record?
      render 'new'
    else
      session[:order_step] = session[:order_params] = nil
      flash[:notice] = "Order saved."
      redirect_to @order
    end
  end

视图/命令/新

%h1 New order

= form_for(@order) do |f|
  - if @order.errors.any?
    #error_explanation
      %h2
        = pluralize(@order.errors.count, "error")
        prohibited this order from being saved:
      %ul
        - @order.errors.full_messages.each do |msg|
          %li= msg
  = render "#{@order.current_step}_step", :f => f 
  = f.submit "Continue"
  = f.submit "Back", :name => "back_button" unless @order.first_step?

我正在尝试嵌套表单的部分视图:

.field
  = f.label :quantity    
  = f.text_field :quantity

%h3
  Customer details

=f.fields_for :customer do |builder|
  =builder.label :name
  =builder.text_field :name

  =builder.label :email
  =builder.text_field :email

希望这就是一切。我以前做过嵌套表单,但从未与多步表单组合。任何帮助都会非常感激。

1 个答案:

答案 0 :(得分:1)

是的,你需要两个:

attr_accessible :customer_attributes, :customer_id, :format, :message, :phone, :quantity
accepts_nested_attributes_for :customer

attr_accessible告诉Rails允许的属性区域。

accepts_nested_attributes_for告诉rails将属性委托给另一个类。