send_file issue

Question

I am using send_file to send some CSV data that I generate.

file = "public/text.csv"
File.open(file, "w"){ |f| f << "Hello World!" }
send_file(file, :type => "text/csv; charset=utf-8")

But I get this downloaded via send_file (It should download file with "Hello World" string)

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If I open it through the browser:

http://mydomain.com/test.csv

it opens properly with Hello World text.

Also in development it works fine. Only in production and only with this files.

EDIT

While I don't know the reason of this behavior I switched to send_data that works fine for me.

If you inspect the http response headers... compression? encryption? corruption? — Marc Gravell, May 16 '11 at 11:08
No compression on server side. I am sending a lot of files via send_file. But now this. Maybe it is just about `csv`... Going to check it — fl00r, May 16 '11 at 11:11

score 2 · Answer 1 · answered May 16 '11 at 11:18

2

It looks like you are opening your file as write only. Try changing the mode from w to w+. So: File.open(file, "w"){ |f| f << "Hello World!" } to File.open(file, "w+"){ |f| f << "Hello World!" }

answered May 16 '11 at 11:18

Maran

2,751
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score 1 · Answer 2 · answered Aug 11 '11 at 18:37

1

As you are opening file in write mode and sending file. File is in swap mode. You need to close it before doing export

file = "public/text.csv"
_file = File.open(file, "w"){ |f| f << "Hello World!" }
_file.close()
send_file(file, :type => "text/csv; charset=utf-8")

answered Aug 11 '11 at 18:37

Sandip Ransing

7,583
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Interesting idea, but File should be automatically closed after block is executed. – fl00r Aug 11 '11 at 18:49

score 0 · Answer 3 · answered Jan 30 '12 at 13:48

Actually we dont need to create csv file. Hence more elegant solution

data = CSV.generate do |csv|
          csv << "Hello World"
        end
send_data data,
  :type => 'text/csv; charset=iso-8859-1; header=present',
  :disposition => "attachment; filename=text.csv"

send_file issue

3 Answers3