Convert sfruby.info meetup URLs to canonical form

db/migrate/20161206055208_regenerate_canonical_sfruby_meetup_urls.rb

@@ -0,0 +1,21 @@
+class RegenerateCanonicalSfrubyMeetupUrls < ActiveRecord::Migration
+  class Event < ActiveRecord::Base
+    serialize :imported_event_data, JSON
+  end
+
+  def change
+    # The old format stored was like http://www.sfruby.info/events/13311831/,
+    # but those URLs don't work anymore for whatever reason.
+
+    # URLs of the form https://www.meetup.com/sfruby/events/13311831/
+    # still work fine.
+    meetup_events = Event.where.not(imported_event_data: nil)
+      .select { |e| e.imported_event_data['student_event']['url'].match /sfruby/ }
+    meetup_events.each do |e|
+      imported_event_data = e.imported_event_data
+      imported_event_data['volunteer_event']['url'] = "https://www.meetup.com/sfruby/events/#{imported_event_data['volunteer_event']['id']}/"
+      imported_event_data['student_event']['url'] = "https://www.meetup.com/sfruby/events/#{imported_event_data['student_event']['id']}/"
+      e.update_attribute(:imported_event_data, imported_event_data)
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20161204040052) do
+ActiveRecord::Schema.define(version: 20161206055208) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
   enable_extension "unaccent"