Question

我使用to_xls和spreadsheet gem将数据导出到rails4中的excel表

但是，即使excel表格打开，我也无法将数据导出到Excel工作表。

我正在学习本教程

http://code.dblock.org/2011/09/01/exporting-data-to-excel-in-ruby-on-rails-w-spreadsheet-and-toxls.html

orders_controller.rb

def index
  @orders = Order.all.includes(:status,:document,:platform, payment: 
            [:status]).where(status_id: Orders::Status.where(name: 
            ['INPROGRESS', 'COMPLETED']).pluck(:id)).paginate(:page => 
            params[:page], :per_page => 30).order('id Desc')

  @order_statuses = Orders::Status.all

  @delivery_statuses = Orders::DeliveryStatus.all 
                       respond_to do |format|  
                       format.html
                       format.xls do
                       send_data( 
                                  Order.where(status_id:         
                                  Orders::Status.where(name: 
                                  ['COMPLETED',
                                 'INPROGRESS' ]).pluck(:id))
                                 .includes(:status, :platform,
                                          :payment).map{
                                          |order|
                                          {  
                                   id: order.id, txnid: order.txnid,
                                   created_at: order.created_at,
                                   product: order.product,
                                   payment:                    
                                          order.payment.status.name, 
                                  status: order.status.name,   
                                  total_amount: order.total_amount,     
                                  discount: order.discount, 
                                  platform: order.platform.name 
                                  }}.to_xls,
                       content_type: 'application/vnd.ms-excel',
                       filename: 'orders.xls' )
                    end
                  end
                end

订单/ index.html.erb

<table id='myOrdersTable'class="table table-bordered">
<thead>
<tr>
  <th>Trans ID</th>
  <th>Date(dd/mm/yy)</th>
  <th>Product</th>
  <th>Payment</th>
  <th>Status</th>
  <th>Total amount</th>
  <th>Discount</th>
  <th>Platform</th>
  <th>Draft</th> 
  <th>Edit Draft</th>
  <th>Upload Soft Copy</th>
  <th colspan="3"></th>
</tr>
</thead>

<tbody>
<% @orders.each do |order| %>
  <tr>
    <td><%= order.txnid %></td>
    <td><%= order.created_at.strftime('%d-%b-%Y') %></td>
    <td><%= order.product %></td>
    <td><%= order.payment.status.name if order.payment %></td>
    <td><%= order.status.name %></td>
    <td><%= order.total_amount %></td>
    <td><%= order.discount %></td>
    <td><%= order.platform.name %></td>
    <td
        :
        :
        :

  <% end %>
  </tbody>
  </table>
  <%= will_paginate @orders %>
        :
        :
 <%#= link_to 'New Order', new_order_path %>
 <%= link_to 'Exporting', "/admin/orders.xls", :class =>'btn btn-primary' 
  %>

此处在链接中，如果调用

 <%= link_to 'Exporting', orders_path(request.parameters.merge({:format
  => :xls})), :class =>'btn btn-primary' %>

它给出了一个模板缺失错误（不知道为什么）.Hence我没有在代码中使用上面的链接来获取导出按钮。这有助于我生成Excel工作表，但无法将index.html.erb页面中的所有列及其值导出到工作表中。只需提供一个空白电子表格。如何将所有这些数据导出到工作表？请帮助！我是一个初学者，如此精心准备，如果需要更多数据，请告诉我。

Answer 1

My choice is to just manually generate CSV file like this :

@orders = Order.all

header = ["id", "status" // put your header field ]

csv = CSV.generate do |csv|
    csv << header
    @orders.each do |order|
      row = [ordrer.id, order.total_amount //mention your fields here  ]  
    end 
 csv << row

end

无法将数据导出到Excel工作表

1 个答案: