Not able to export data to an excel sheet - sql

Question

I am using to_xls and spreadsheet gem to export data to excel sheet in rails4
However, I am not able to export the data to excel sheet even if the excel sheet fires open.
I am following this tutorial
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
orders/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'
%>
Here in the link if call
<%= link_to 'Exporting', orders_path(request.parameters.merge({:format
=> :xls})), :class =>'btn btn-primary' %>
it gives a template missing error(Dont know why) .Hence I am not using the above link in the code to get the export button.
This helps me generate an excel sheet, but not able to export all the columns from the index.html.erb page and their values into the sheet. Just gives a blank spreadsheet. How can I export all these data in to sheet? Please help !I am a beginner so kindly elaborate and let me know if more data is needed.

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