Question

I have this statement:

File.open(some_path, 'w+') { |f| f.write(builder.to_html)  }

Where

some_path = "somedir/some_subdir/some-file.html"

What I want to happen is, if there is no directory called somedir or some_subdir or both in the path, I want it to automagically create it.

How can I do that?

Answer 1

You can use FileUtils to recursively create parent directories, if they are not already present:

require 'fileutils'

dirname = File.dirname(some_path)
unless File.directory?(dirname)
  FileUtils.mkdir_p(dirname)
end

Edit: Here is a solution using the core libraries only (reimplementing the wheel, not recommended)

dirname = File.dirname(some_path)
tokens = dirname.split(/[\/\\]/) # don't forget the backslash for Windows! And to escape both "\" and "/"

1.upto(tokens.size) do |n|
  dir = tokens[0...n]
  Dir.mkdir(dir) unless Dir.exist?(dir)
end