Time.zone.parse('2007-02-10 15:30:45')

如下所述：http://api.rubyonrails.org/classes/ActiveSupport/TimeWithZone.html

但即使在需要active_support和active_support / time_with_zone之后,我似乎仍然无法使用Time.zone.注意：

2.2.1 :002 >   require "active_support"
 => true
2.2.1 :003 > Time.zone
NoMethodError: undefined method `zone' for Time:Class
2.2.1 :004 > require "active_support/time_with_zone"
 => true
2.2.1 :005 > Time.zone
NoMethodError: undefined method `zone' for Time:Class

这是怎么回事？