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If I have a datetime value of something like 1/10/2011 9:00:00, how do I get the 9:00 am from that datetime?
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Ruby | DateTime parse() function DateTime#parse() : parse() is a DateTime class method which parses the given representation of date and time, and creates a DateTime object. Return: given representation of date and time, and creates a DateTime object.
DateTime#now() : now() is a DateTime class method which returns a DateTime object denoting the given calendar date. Return: DateTime object denoting the given calendar date.
For most cases, the Time with the time zone class from Rails’ ActiveSupport is sufficient. But sometimes, when you just need a string format of year, month and day, Dateclass still worth a try. Remember to add require 'date'when you encounter undefined methoderror, when trying to use Dateclass.
Date and DateTime classes are both from date library. And Time class from its own time library. Tech Notes from Steven Home About Date, Time, DateTime in Ruby and Rails Mar 23, 2013• Steven Yue There are 3 different classes in Ruby that handle date and time. Dateand DateTimeclasses are both from datelibrary. And Timeclass from its own timelibrary.
There are 3 different classes in Ruby that handle date and time. Date and DateTime classes are both from date library. And Time class from its own time library. Tech Notes from Steven
For Rails application, you can set the default time zone under /config/application.rb # /config/application.rbconfig.time_zone='Central Time (US & Canada)' To get a list of time zone names supported by Rails, you can use ActiveSupport::TimeZone.zones_map(&:name)
strftime will do it.
t = Time.now t.strftime("%I:%M%p") All other attributes here:
http://www.wetware.co.nz/blog/2009/07/rails-date-formats-strftime/
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DateTime.new(2011,10,1,9).to_s(:time) #=> "09:00" DateTime.now.to_s(:time) #=> "11:58" From Time docs
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