From: Phrogz <phrogz@...>
Date: 2007-11-07T13:55:02+09:00
Subject: Re: Is there a "||" that treats "" also as false?

On Nov 6, 6:31 pm, Joshua Muheim <fo...@josh.ch> wrote:
> The problem is, in my Rails app I sometimes have a variable set to ""
> (empty user input) or nil.

This is why ActiveSupport has the #blank? method:

irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'active_support'
=> true
irb(main):003:0> nil.blank?
=> true
irb(main):004:0> "".blank?
=> true
irb(main):005:0> "foo".blank?
=> false
irb(main):006:0> false.blank?
=> true
irb(main):007:0> 0.blank?
=> false