Character encoding issue exporting rails data to CSV

Question

I\'m exporting data to a CSV file in rails and in some of my fields, I\'m getting character encoding issues like this when I open in Excel:

didn’t
<         


        

Answer 1

This worked for me, with Chinese characters!excel csv fromat (BOM + UTF8)

def export_csv_excel
  ....

  # Add BOM to make excel using utf8 to open csv file
  head = 'EF BB BF'.split(' ').map{|a|a.hex.chr}.join()

  csv_str = CSV.generate(csv = head) do |csv|
    csv << [ , , , ...]
    @invoices.each do |invoice|
      csv << [ , , , ...]
    end
  end

  send_data csv_str, filename: "Invoices-#{Time.now.strftime("%y%m%d%H%M%S")}.csv", type: "text/csv"
end

source(Chinese): http://blog.inheart.tw/2013/09/rubyraisl-csv-excel.html