Rails:动态地将产品添加到订单中

时间:2013-05-12 16:26:31

标签: javascript mysql ruby ruby-on-rails-3

我希望能够动态地将表单元素添加到我的订单页面,以便用户可以单击按钮并获得另一个元素来选择产品。然后如何使用Rails处理它。这是我目前的文件:

订单型号:

class Order < ActiveRecord::Base
  attr_accessible :client_id, :order_total, :delivery_date
  has_many :orderedproducts
  has_many :products, through: :orderedproducts
  has_one :client

  before_save :generate_total

  def generate_total
    self.order_total = self.products.map(&:product_price).sum
  end
end

订单控制器:

class OrdersController < ApplicationController
  def view
    @orders = Order.all
  end

  def new
    @order = Order.new
  end
end

新订单视图:

<% if current_user %>
    <div id="dashboard">
        <div id="logo"></div>
        <table id="go_back_link_container">
            <tr>
                <td>
                    <div class="go_back_link">
                        <%= link_to "<- Go Back", root_url %>
                    </div>
                </td>
                <td>
                    <div id="user_display">
                        Logged in as <%= current_user.email %>.
                        <%= link_to "Log out", log_out_path %>
                    </div>
                </td>
            </tr>
        </table>
        <%= form_for @order do |f| %>
          <% if @order.errors.any? %>
            <div class="error_messages">
                <% for message in @order.errors.full_messages %>
                    * <%= message %> <br>
                <% end %>
            </div>
          <% end %>
          <p>
            <%= f.label 'Select The Client' %><br />
            <%= select :client, :client, Client.all().collect { |c| [ (c.firstname + " " + c.surname), c.id ] } %>
          </p>
           <p>
            <%= f.label 'Select The Client' %><br />
            <%= f.fields_for :products do |builder| %>
                <%= render '', f: builder %>
            <% end %>
          </p>
          <p class="button"><%= f.submit %></p>
        <% end %>
        <% flash.each do |name, msg| %>
            <%= content_tag :div, "* " + msg, :id => "flash_#{name}" %><br />
        <% end %>
        <div id="copyright-notice"><div id="copyright_border">Copyright © Conner McCabe, all rights reserved.</div></div>
    </div>
<% else %>
    <script type="text/javascript">
        window.location="<%= root_url %>"
    </script>
<% end %>

订购产品型号:

class Orderedproduct < ActiveRecord::Base
  attr_accessible :order_id, :product_id, :quantity_ordered
  belongs_to :order
  belongs_to :product
end

产品型号:

class Product < ActiveRecord::Base
    #This line makes these elements accessible outside of the class.
    attr_accessible :product_name, :product_price, :product_quantity, :product_supplier

    has_many :orderedproducts
    has_many :orders, through: :orderedproducts

    #These attributes ensure that the data entered for each element is valid and present.
    validates_presence_of :product_name
    validates_presence_of :product_price
    validates_numericality_of :product_price
    validates_presence_of :product_quantity
    validates_numericality_of :product_quantity
    validates_presence_of :product_supplier

end

订单与产品之间的关系是通过订购的产品模型。所以我需要能够添加一个包含所有产品下拉列表和数量文本字段的字段,以便输入他们希望添加到订单中的数量。

非常感谢任何帮助,谢谢。

1 个答案:

答案 0 :(得分:0)

你可能想看看这个 - Building Complex Forms in Rails