Contents

class String
  class << self
    # Build a url/human-friendly random string. Defaults to 25 characters long.
    def friendly(length = 25)
      (1..length).map{ friendly_characters.sample }.join
    end

    # Build a completely unfriendly random string. Defaults to 25 characters long.
    def crazy(length = 25)
      (1..length).map{ crazy_characters.sample }.join
    end

    private

    def friendly_characters
      @friendly_characters ||= ['0'..'9', 'a'..'z', 'A'..'Z'].map(&:to_a).flatten!
    end

    def crazy_characters
      @crazy_characters ||= friendly_characters + ["\\", '(', ')', ' ', '`', '#', '"', "'", '?'] + 
        %w(~ ! @ $ % ^ & * _ - + = [ ] { } | ; : , < . > /)
    end
  end

  # Translate a human-readable representation of an ObjectID instance back to an ObjectID.
  # Requires the all-your-base gem.
  def to_oid
    string = ::AllYourBase::Are.convert_to_base_10(self, :radix => 62).to_s(16)

    # replace leading zeroes that were lost during the hex conversion
    until string.length == 24
      string = '0' + string
    end

    BSON::ObjectID.from_string(string.reverse)
  end

  # For when you want to check for a string in a case-insensitive fashion. Mostly used in Mongo queries.
  def to_regex
    /^#{Regexp.escape(self)}$/i
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
junk_drawer-0.0.7	lib/core_extensions/string.rb
junk_drawer-0.0.6	lib/core_extensions/string.rb
junk_drawer-0.0.5	lib/core_extensions/string.rb
junk_drawer-0.0.4	lib/core_extensions/string.rb
junk_drawer-0.0.3	lib/core_extensions/string.rb