ruby on rails - Delete values of row when import csv -

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i have import csv file method carrierwave , it's works. , want delete values of row when have been successful imported database.

csv_text = file.read(file_csv.current_path) csv = csv.parse(csv_text) csv.each_with_index |row, index|   @foo = foo.new(bar: row[0])   if @foo.save     # delete values of row   else     next   end end

example have file csv containing : 

lenovo z360, black, 14 asus a46, blue, nil macbook pro, silver

lenovo z360 , macbook pro has been successful import, , end of process import file :

asus a46, blue, nil

is possible ? how able read, write/delete , manipule file many of row?


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