On 2 October 2012 05:00, Nila <[email protected]> wrote: > Hi, > > Is there a way to edit each line in a file, without involving 2 files? Say, > the original file has, > > test01 > test02 > test03 > > I want to edit it like > test01,a > test02,a > test03,a > > Tried something like this, but it replaces some of the characters. > File.open('mytest.csv', 'r+') do |file| > file.each_line do |line| > file.seek(-line.length, IO::SEEK_CUR) > file.puts 'a' > end > end > > Writing it to a temporary file and then replace the original file works, > However, I need to edit the file quite often and therefore prefer to do it > within the file itself .Any pointers are appreciated.
It sounds like you might be better using records in a database for each line and re-generate the file when it is needed as a file. Rails is quite good at modifying records in a database :) Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
