A simple library to handle recurring events.
gem install recurrence
require "rubygems" require "recurrence" # Daily r = Recurrence.new(:every => :day) r = Recurrence.new(:every => :day, :interval => 9) r = Recurrence.new(:every => :day, :repeat => 7) r = Recurrence.daily(options = {}) # Weekly r = Recurrence.new(:every => :week, :on => 5) r = Recurrence.new(:every => :week, :on => :monday) r = Recurrence.new(:every => :week, :on => [:monday, :friday]) r = Recurrence.new(:every => :week, :on => [:monday, :wednesday, :friday]) r = Recurrence.new(:every => :week, :on => :friday, :interval => 2) r = Recurrence.new(:every => :week, :on => :friday, :repeat => 4) r = Recurrence.weekly(:on => :thursday) # Monthly by month day r = Recurrence.new(:every => :month, :on => 15) r = Recurrence.new(:every => :month, :on => 31) r = Recurrence.new(:every => :month, :on => 7, :interval => 2) r = Recurrence.new(:every => :month, :on => 7, :interval => :monthly) r = Recurrence.new(:every => :month, :on => 7, :interval => :bimonthly) r = Recurrence.new(:every => :month, :on => 7, :repeat => 6) r = Recurrence.monthly(:on => 31) # Monthly by week day r = Recurrence.new(:every => :month, :on => :first, :weekday => :sunday) r = Recurrence.new(:every => :month, :on => :third, :weekday => :monday) r = Recurrence.new(:every => :month, :on => :last, :weekday => :friday) r = Recurrence.new(:every => :month, :on => :last, :weekday => :friday, :interval => 2) r = Recurrence.new(:every => :month, :on => :last, :weekday => :friday, :interval => :quarterly) r = Recurrence.new(:every => :month, :on => :last, :weekday => :friday, :interval => :semesterly) r = Recurrence.new(:every => :month, :on => :last, :weekday => :friday, :repeat => 3) # Yearly r = Recurrence.new(:every => :year, :on => [7, 4]) # => [month, day] r = Recurrence.new(:every => :year, :on => [10, 31], :interval => 3) r = Recurrence.new(:every => :year, :on => [:jan, 31]) r = Recurrence.new(:every => :year, :on => [:january, 31]) r = Recurrence.new(:every => :year, :on => [10, 31], :repeat => 3) r = Recurrence.yearly(:on => [:january, 31]) # Limit recurrence # :starts defaults to Date.today # :until defaults to 2037-12-31 r = Recurrence.new(:every => :day, :starts => Date.today) r = Recurrence.new(:every => :day, :until => '2010-01-31') r = Recurrence.new(:every => :day, :starts => Date.today, :until => '2010-01-31') # Generate a collection of events which always includes a final event with the given through date # :through defaults to being unset r = Recurrence.new(:every => :day, :through => '2010-01-31') r = Recurrence.new(:every => :day, :starts => Date.today, :through => '2010-01-31') # Override the next date handler r = Recurrence.new(:every => :month, :on => 1, :handler => Proc.new { |day, month, year| raise("Date not allowed!") if year == 2011 && month == 12 && day == 31 }) # Shift the recurrences to maintain dates around boundaries (Jan 31 -> Feb 28 -> Mar 28) r = Recurrence.new(:every => :month, :on => 31, :shift => true) # Getting an array with all events r.events.each {|date| puts date.to_s } # => Memoized array r.events!.each {|date| puts date.to_s } # => reset items cache and re-execute it r.events(:starts => '2009-01-01').each {|date| puts date.to_s } r.events(:until => '2009-01-10').each {|date| puts date.to_s } r.events(:through => '2009-01-10').each {|date| puts date.to_s } r.events(:starts => '2009-01-05', :until => '2009-01-10').each {|date| puts date.to_s } # Iterating events r.each { |date| puts date.to_s } # => Use items method r.each! { |date| puts date.to_s } # => Use items! method # Check if a date is included r.include?(Date.today) # => true or false r.include?('2008-09-21') # Get next available date r.next # => Keep the original date object r.next! # => Change the internal date object to the next available date
If you’re having problems because already have a class/module called Recurrence that is conflicting with this gem, you can require the namespace and create a class that inherits from SimplesIdeias::Recurrence.
require "recurrence/namespace" class RecurrentEvent < SimplesIdeias::Recurrence end r = RecurrentEvent.new(:every => :day)
If you’re using Rails/Bundler or something like that, remember to override the :require option.
# Gemfile source :rubygems gem "recurrence", :require => "recurrence/namespace"
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Nando Vieira (nandovieira.com.br)
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José Valim (plataformatec.com.br)
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Maxim Chernyak (mediumexposure.com)
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Ricardo H. (github.com/ricardohsd)
(The MIT License)
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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