Hello,
I'm using the spreadsheet/excel gem to generate an excel sheet that I
want user to be able to download it once it's generated. Please take a
look on the below code:
@contacts=Contact.find(:all)
if @contacts.size>0
file="#{Date.today}_Report.xls"
workbook=Spreadsheet::Excel.new("#{RAILS_ROOT}/public/reports/#{file}")
worksheet=workbook.add_worksheet("All Users on Database")
worksheet.write(0, 0, "First Name")
worksheet.write(0, 1, "Last Name")
worksheet.write(0, 2, "Email")
row = 2
@contacts.each do |users|
worksheet.write(row, 0, "#{users.first_name}")
worksheet.write(row, 1, "#{users.last_name}")
worksheet.write(row, 2, "#{users.email}")
row += 1
end
workbook.close
send_file "#{RAILS_ROOT}/public/reports/#{file}", :type =>
'text/xl; charset=utf-8; header=present', :disposition =>
'attachement',:filename=>"#{file}"
The excel sheet is generated correctly, but the last line gives an error
in the server, and no file is downloaded.
Here is the error:
NoMethodError (undefined method `call' for nil:NilClass):
I don't know what is the nill class of the above line.
Can anyone help me?
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