Railscasts Episode #362 - Exporting to Excel: How to avoid the warning message given by Excel 2010 when opening the file?

Question

When using the example app from Ryan Bates\' Railscasts Episode #362 about exporting to Excel (https://github.com/railscasts/362-exporting-csv-and-excel), I\'ve noticed that

Answer 1

In fact, the code generated:

  
    
        ID
        Name
        Release Date
        Price
      
    <% @products.each do |product| %>
      
        <%= product.id %>
        <%= product.name %>
        <%= product.released_on %>
        <%= product.price %>
      
    <% end %>
    
  

is XML (XLS is a binary format, XLST a zipped format)

Renaming the file to .xml should work