Recurring Events with Montrose

Introduction to the Montrose gem for modeling recurring events in Ruby. Learn more: http://bit.ly/1U3RDA7

Transcript

1. RECURRING EVENTS
   NYC.rb, every month, 2nd Tuesday, at 7pm
   Ross Kaffenberger
   with Montrose
   

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2. @rossta
   2
   

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4. WEPLAY 2008
   

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5. WEPLAY 2008
   

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6. ESTIMATE 4 days
   

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7. ACTUAL 4 WEEKS
   

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8. HARD PROBLEMS
   

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9. CHALLENGE MODELING RECURRENCE
   “every Friday 13th, forever” # in Ruby
   

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10. CHALLENGE MODELING RECURRENCE
    * ice_cube
    * recurrence
    * runt
    something_better???
    

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11. # enumerable, e.g.
    r.each do |time|
    puts time
    end
    WISH LIST
    

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12. # queryable, e.g.
    r.include?(time)
    r.events
    r.until(time)
    WISH LIST
    

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13. # serializable, e.g.
    r.to_json
    r.to_yml
    r.to_ical
    WISH LIST
    

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14. # easy-to-use
    # ???
    WISH LIST
    

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15. API-DRIVEN
    

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16. INSPIRATION rfc5545 - iCAl Spec
    Every Friday the 13th, forever:
    RRULE:FREQ=MONTHLY;BYDAY=FR;BYMONTHDAY=13
    

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17. INSPIRATION DATA STRUCTURE
    { every: :month, on: { friday: 13 } }
    

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18. INSPIRATION HTTP.rb
    “easy-to-use client library
    for making requests from
    Ruby. It uses a simple method
    chaining system…”
    

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19. INTRODUCING MONTROSE
    “easy-to-use library for
    DEFINING RECURRING EVENTS IN
    Ruby. It uses a simple method
    chaining system…”
    gem install montrose
    

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20. Montrose.minutely
    Montrose.daily
    Montrose.monthly
    # etc.
    MONTROSE EXAMPLES
    github.com/rossta/montrose
    

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21. Montrose.weekly(on: :monday, at: "10:30 am")
    => #
    MONTROSE EXAMPLES
    github.com/rossta/montrose
    

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22. Montrose.monthly.
    starting(1.year.from_now).
    on(friday: 13).
    repeat(5)
    MONTROSE CHAINABLE
    github.com/rossta/montrose
    

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23. # Every 3 hours
    Montrose.hourly.interval(3)
    Montrose.every(3.hours)
    Montrose.r(every: 3.hours)
    Montrose.recurrence(every: :hour, interval: 3)
    MONTROSE FLEXIBLE
    github.com/rossta/montrose
    

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24. r = Montrose.monthly.repeat(3)
    r.map(&:to_date)
    => [Tue, 09 Feb 2016, Wed, 09 Mar 2016, ...]
    MONTROSE ENUMERABLE
    github.com/rossta/montrose
    

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25. r1 = Montrose.every(:week)
    r2 = Montrose.on(:tuesday, :thursday)
    r3 = Montrose.at("12 pm")
    r1.merge(r2).merge(r3).take(4).to_a
    => [2016-02-09 12:00:00 -0500,
    2016-02-11 12:00:00 -0500,
    ...]
    MONTROSE COMPOSABLE
    github.com/rossta/montrose
    

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26. class EventSeries < ActiveRecord::Base
    serialize :recurrence, Montrose::Recurrence
    end
    MONTROSE SERIALIZABLE
    github.com/rossta/montrose
    

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27. MONTROSE NYC.RB
    Montrose.monthly.
    day(tuesday: [2]).
    at("7pm")
    github.com/rossta/montrose
    

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28. NEXT STEPS
    github.com/rossta/montrose
    

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29. rossta/montrose
    @rossta
    http://empex.co
    Empire City Elixir Conf
    rossta.net
    

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