Rails3 CSV putting "" instead of actual quotes
问题 Similar to this question except I don't use html_safe anywhere in the whole project. I generate a CSV file in index.csv.erb like this: <%= response.content_type = 'application/octet-stream' CSV.generate do |csv| @persons.each do |person| csv << [ person[:name], person[:nickname] ] end end %> PROBLEM: If nickname is NULL in the database (ActiveRecord/MySQL) then the CSV file associated element becomes "" . I would expect "" , or even nothing at all. Result file sample: Nicolas, Nico Joe, ""