ruby - undefined method `zone` for Time:Class after requiring active_support/time_with_zone -

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i'm on ruby 2.2.1 , have active_support 4.2 installed want use 

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

as described here: http://api.rubyonrails.org/classes/activesupport/timewithzone.html

but after requiring active_support , active_support/time_with_zone, doesn't seem time.zone still doesn't work. observe:

2.2.1 :002 >   require "active_support"  => true 2.2.1 :003 > time.zone nomethoderror: undefined method `zone' time:class 2.2.1 :004 > require "active_support/time_with_zone"  => true 2.2.1 :005 > time.zone nomethoderror: undefined method `zone' time:class

what's going on?

the zone class method time class in active_support/core_ext/time/zones. can require class if want use time.zone better approach might require active_support/all

suggested solution

require "active_support/all"

if want check out source code fort active_support @ github repo


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