Class: Time

Inherits:
Object
  • Object
show all
Defined in:
lib/kuali-sakai-common-lib/core-ext.rb

Class Method Summary collapse

Class Method Details

.random(params = {}) ⇒ Object

Using the :year_range option (or no option), this method creates a Time object of a random value, within the year range specified (default is 5 years in the past).

Using the :series option, this method returns an array containing a randomized Time object as its first element (limited by the specified :year_range value). Subsequent elements will be Time objects with values putting them later than the prior element, within the specified range value (see examples).

Usage Examples:

Examples:

a random date...
?> Time.random
=> Tue Aug 05 00:00:00 EDT 2007

birthdays, anyone?...
5.times { p Time.random(:year_range=>80) }
Wed Feb 06 00:00:00 EDT 1974
Tue Dec 22 00:00:00 EST 1992
Fri Apr 14 00:00:00 EWT 1944
Thu Jul 01 00:00:00 EDT 1993
Wed Oct 02 00:00:00 EDT 2002

A series of dates are useful for account-related info...
?> Time.random(:series=>[20.days, 3.years])
=> [Sat Jan 22 00:00:00 EST 2005,
Sat Jan 29 12:58:45 EST 2005,
Fri Sep 08 09:34:58 EDT 2006]

or maybe to simulate events during an hour?...
?> Time.random(:series=>[1.hour,1.hour,1.hour])
=> [Wed Apr 21 00:00:00 EDT 2004,
Wed Apr 21 00:45:59 EDT 2004,
Wed Apr 21 01:02:47 EDT 2004,
Wed Apr 21 01:31:00 EDT 2004]


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# File 'lib/kuali-sakai-common-lib/core-ext.rb', line 39

def self.random(params={})
  years_back = params[:year_range] || 5
  year = (rand * (years_back)).ceil + (Time.now.year - years_back)
  month = (rand * 12).ceil
  day = (rand * 31).ceil
  series = [date = Time.local(year, month, day)]
  if params[:series]
    params[:series].each do |some_time_after|
      series << series.last + (rand * some_time_after).ceil
    end
    return series
  end
  date
end