问题
I need to parse a date string mentioned below to std date format.
Is there a built in function in ruby that would parse something like,
December 09, 2011 to 2011-12-09
回答1:
Date.parse is already mentioned.
I prefer Date.strptime. This methods is a reverse strftime.
Date.parse is a (maybe good) guess, with Date.strptime you can parse each date, when you know which format you expect.
Example:
require 'date'
puts Date.strptime('December 09, 2011', '%B %d, %Y')
Or if you have another format where Date.parse fails:
require 'date'
puts Date.strptime("28-May-10", "%d-%b-%y") #2010-05-28
回答2:
Do as below using Date::parse:
require 'date'
Date.parse('December 09, 2011').to_s # => "2011-12-09"
来源：https://stackoverflow.com/questions/21391953/ruby-parse-date-string