ruby on rails - Why do none of the instance methods work on DateTime object? - 


require 'date' = datetime.now sunday = - now.wday  >> sunday = - now.wday => #<datetime: 53058180361250947/21600000000,-5/24,2299161>

since sunday datetime object, should able call instance methods such to_date or midnight, both of listed in rails documentation.

however, get

>> sunday.to_time nomethoderror: undefined method `to_time' #<datetime: 53058180361250947/21600000000,-5/24,2299161>         (irb):17

actually none of these instance methods work on it. i'm using irb mode, , not know what's going on. can 1 tell me how fix problem?

they're not ruby methods, they're rails methods, in active support. and, in irb, active support not loaded default.

http://api.rubyonrails.org/classes/datetime.html#method-i-to_time


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