God messing with Date Operations

This is a weired think. Follow my steps:

With开发者_如何转开发out god, on console:

> d=Date.parse("2010-02-01")
=> Mon, 01 Feb 2010
> d+1.day
=> Tue, 02 Feb 2010

Perfect.

Then, I go to my Gemfile and add

gem 'god'

and run

bundle install

After that, on console again:

> d=Date.parse("2010-02-01")
=> Mon, 01 Feb 2010 
> d+1.day
=> Sun, 23 Aug 2246

Do you know what could be happening?

Odd that this is happening in a console. I could have understood it in other scenarios, where 1.day is being used as an input in one place and extracted for use somewhere else, since 1.day is the Fixnum 86400, with some special metadata (#steps) mixed into it.

Date treats, for example, + 1 to mean "add one day". Rails adds some behaviour so that it understands the 1.day thing (86400 "seconds", but with a step of [1, :days]) to actually mean + 1 instead of + 86400. This is what you're losing:

ruby-1.9.2-p290 :171 > d = Date.parse("2010-02-01")
 => #<Date: 2010-02-01 (4910457/2,0,2299161)> 
ruby-1.9.2-p290 :172 > d + 86400
 => #<Date: 2246-08-23 (5083257/2,0,2299161)> 
ruby-1.9.2-p290 :173 > 

So the value 1.day is being interpreted as a Fixnum, rather than a Fixnum with ActiveSupport::Duration.

irb(main):001:0> Date.parse("2010-02-01") + 1.day.to_i
=> Sun, 23 Aug 2246

So if you're using this 1.day value in a context where it is not being immediately consumed, don't... use the Fixnum 1 instead ;)

"god" makes a mess of Dates. This is a problem with "god". A gem used with Rails should not alter Rails conventions. If Date.current - 4.days does one thing without "god", then it should do that with "god". Period.

According to the GitHub open issue, i tried this solution :

Gemfile

gem 'god', :require => false

Instead of :

gem 'god'

The everything seem to work again :

1.9.3p0 :001 > d = Date.parse('2012-04-16')
 => Mon, 16 Apr 2012 
1.9.3p0 :002 > d + 1.day
 => Tue, 17 Apr 2012