Question

我是rails的新手并且一直在努力解决以下问题。不幸的是，数小时的搜索还没有找到解决方案，所以我非常乐意接受您的意见。

在创建订单时，我尝试创建客户端（作为父级）和订购商品（作为子级）。后者工作正常。但是，在保存订单时，订单和客户都存储在数据库中，但* client_id *未传递到订单记录。

以下是我的代码：

公司模式

class Company < ActiveRecord::Base

  has_many :orders,     foreign_key: "client_id"
  accepts_nested_attributes_for :orders

  validates :name, 
            :presence => true,
            :uniqueness => { :case_sensitive => false } 

  validates_associated  :users,
                        :orders

  attr_accessible :name, 
                  :account, 
                  :users_attributes,
                  :orders_attributes,  
                  :company_id
end

订单型号

class Order < ActiveRecord::Base

    has_many :order_items
    accepts_nested_attributes_for   :order_items

    belongs_to  :client, class_name: "Company",
                                    foreign_key: "id"
    accepts_nested_attributes_for   :client

    attr_accessible :order_items_attributes,
                    :order_number,
                    :client_attributes,
                    :client_id

    validates_associated    :order_items

    validates_presence_of   :order_number
                            :client_id
end

订单控制器

  def create
    @order = @client.orders.build(params:[orders])
    puts @order.to_yaml

    respond_to do |format|

      if @order.save!
        format.html { redirect_to @order, notice: 'Order was successfully created.' }
        format.json { render json: @order, status: :created, location: @order }
      else
        format.html { render action: "new" }
        format.json { render json: @order.errors, status: :unprocessable_entity }
      end
    end
  end

新订单

<%= simple_form_for @order, :html => { :class => 'form-horizontal' } do |f| %>
    <%= render 'shared/error_messages', :object => @order %> 
  <div class = "span3">
    <%= f.simple_fields_for :client do |client_builder| %>
      <%= client_builder.input  :name, 
                                :label => 'Client' %>
    <% end %>

    <%= f.input :order_number %>
    <%= f.simple_fields_for :order_items do |items_builder| %>
        <%= items_builder.input :reference_number %>
        <%= items_builder.input :item_description %>
    <% end %>

    <%= f.button  :submit,
                  :class => 'btn'%>
    <%= link_to t('.cancel', :default => t("helpers.links.cancel")),
                              orders_path, :class => 'btn' %>
  </div>
<% end %>

提前感谢您的帮助！斯蒂芬

Answer 1

belongs_to  :client, class_name: "Company", foreign_key: "id"

应该是

belongs_to  :client, class_name: "Company", foreign_key: "client_id"

此外，我会更新您的迁移并使该字段不可为空，更好地获得例外而不是保存没有客户的订单

RoR：通过孩子创建父母

1 个答案: