Class: Date

Inherits:
Object
  • Object
show all
Includes:
Date_locale
Defined in:
lib/date_tools/date_locale.rb,
lib/date_tools/date_creator.rb,
lib/date_tools/date_time_compare.rb

Overview

Adaption to allow comparison of time and date

Constant Summary

Constants included from Date_locale

Date_locale::DATE_TEXTS

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Date_locale

get_language_key, locale?, set_target_encoding, #strftime_locale

Class Method Details

.new_by_mday(year, month, weekday, nr) ⇒ Object

Get the third monday in march 2008: new_by_mday( 2008, 3, 1, 3)

Based on forum.ruby-portal.de/viewtopic.php?f=1&t=6157

Raises:

  • (ArgumentError) 


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# File 'lib/date_tools/date_creator.rb', line 16

def self.new_by_mday(year, month, weekday, nr)
  
  raise( ArgumentError, "No number for weekday/nr") unless weekday.respond_to?(:between?) and nr.respond_to?(:between?)
  raise( ArgumentError, "Number not in Range 1..5: #{nr}") unless nr.between?(1,5)
  raise( ArgumentError,  "Weekday not between 0 (Sunday)and 6 (Saturday): #{nr}") unless weekday.between?(0,6)
  
  day =  (weekday-Date.new(year, month, 1).wday)%7 + (nr-1)*7 + 1
  
  if nr == 5
    lastday = (Date.new(year, (month)%12+1, 1)-1).day # each december has the same no. of days
    raise "There are not 5 weekdays with number #{weekday} in month #{month}" if day > lastday
  end
  
Date.new(year, month, day)
end

Instance Method Details

#strftime(format = '%F', lang = nil) ⇒ Object

Redefine strftime with flexible daynames.



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# File 'lib/date_tools/date_locale.rb', line 251

def strftime(format = '%F', lang = nil )
 return strftime_locale(format, lang )
end

#strftime_orig ⇒ Object 



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# File 'lib/date_tools/date_locale.rb', line 247

alias :strftime_orig :strftime

#to_date ⇒ Object

Returns ‘me’.

Needed like Time#to_date() if you don’t know, if you have a date or a time-object.



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# File 'lib/date_tools/date_time_compare.rb', line 51

def to_date()
	self
end