Recurring Events with Montrose

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

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@rossta 2

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WEPLAY 2008

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WEPLAY 2008

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ESTIMATE 4 days

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ACTUAL 4 WEEKS

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HARD PROBLEMS

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

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

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

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

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

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

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API-DRIVEN

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

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

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

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

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

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

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

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