Question

我的发票型号包含many_invoice商品

class Invoice < ActiveRecord::Base
  belongs_to :customer, :inverse_of => :invoices
  attr_accessible :approved_by, :due_date, :invoice_date, :reading_ids, :terms, :customer_id, :customer, :status

  validates :invoice_date, presence: true
  validates :due_date, presence: true
  validates :customer, presence: true
  has_many :invoice_items
  accepts_nested_attributes_for :invoice_items
end

发票项目模型

class InvoiceItem < ActiveRecord::Base
  belongs_to :invoice
  attr_accessible :amount, :description, :rate, :tax_amount
end

我现在在我的Invoices_controller中有一个show动作

def show
@invoice = Invoice.find(params[:id])
respond_to do |format|
    format.html
end
end

我希望能够在发票的显示页面中显示invoice_items，例如描述，税额和费率，但它给了我相当大的挑战。我是否必须在那里创建一个处理发票项目的部分？以下是我的展示页面

<p id="notice"><%= notice %></p>
<div class="row">
<div class="span12">
    <h3> Customer Invoices </h3>
<table class="table table-striped">
  <thead>
    <tr>
      <th>Invoice ID </th>
      <th>Customer Name </th>
      <th>Invoice Date </th>
      <th>Due Date </th>
      <th>Amount</th>     
   </tr>
</thead>
<tbody>
  <tr>
    <td><%= @invoice.customer.name %></td>
    <td><%= @invoice.invoice_date %></td>
    <td><%= @invoice.due_date %></td>   
  </tr>
</tbody>
</table>
</div>
</div>

Answer 1

使用partial不是必须的，但你可以用任何一种方式执行此操作

1 - 没有部分

in your show.html.erb

#your invoice code
<% invoice_items = @invoice.invoice_items %>
<% invoice_items.each to |invoice_item|%>
<tr>
  <td><%= invoice_item.amount%></td>
</tr>
<% end %>

2）部分

in your show.html.erb

#your invoice code
    <% invoice_items = @invoice.invoice_items %>
    <% invoice_items.each to |invoice_item|%>
    <tr>
      <td>
         <%= render :partial => 'invoice_item', :locals => {:item => invoice_item}%>
      </td>
    </tr>
    <% end %>

 in your _invoice_item.html.erb

 <%= item.name %>

HTH

Answer 2

您可以使用partial来保持整洁，但没有理由不能在您的节目视图模板中执行此操作。

<% @invoice.invoice_items.each do |item| %>
 <td><%= item.amount %></td>
 <td><%= item.description %></td>
 # etc
<% end %>

发票项目与您在视图中的@invoice对象相关，因此您可以访问发票invoice_items。

显示两个以上模型的动作

2 个答案: