Exporting CSV data from Rails

Question

I\'m working to export csv data from rails. I\'m following the tutorial here: http://railscasts.com/episodes/362-exporting-csv-and-excel?view=asciicast

In my control

Answer 1

I also met this problem, which was already solved by this answer: https://stackoverflow.com/a/17311372/3458781

Shortly, you have to restart your server. Hope it works for you.