Hi I am using http://spreadsheet.rubyforge.org/ in my application..Usage like
book = Spreadsheet::Workbook.new
Sijo Kg wrote:
Hi I am using http://spreadsheet.rubyforge.org/ in my application..Usage like
book = Spreadsheet::Workbook.new -------- book.write "#{RAILS_ROOT}/public/uploads/excel-file.xls" render :file => "#{RAILS_ROOT}/public/uploads/excel-file.xls" headers['Content-Type'] = "application/vnd.ms-excel" headers['Content-Disposition'] = "attachment; filename=excel-file.xls" headers['Cache-Control'] = ''
In the above i am writing to a file in a location and then read. My question is is there any method so that writing to a file can be avoided ..Because if there are some 100 requests the file will be overwritten(Am I right?) or if give seperate names for the files the upload folder will grow..So is there alternative and i can read the same content directly
I didn't test this code, but looking at the api it looks like Workbook#write will take an IO stream.
require 'stringio' require 'spreadsheet'
book = Spreadsheet::Workbook.new blob = StringIO.new("") book.write blob
send_data blob
Be sure to checkout the link below on send_data, it will allow you to transfer the stream of data without writing it to disk first.
http://api.rubyonrails.org/classes/ActionController/Streaming.html#M000402
Michael Guterl
