[ongoing] rake task to fix existing recursive events

CHANGELOG.md

@@ -12,6 +12,7 @@
 - Updated puma for compatibility with openSSL > 1.0
 - Documented installation on ArchLinux
 - [TODO DEPLOY] `rake db:seed` then `rake fablab:fix:migrate_admins_group`
+- [TODO DEPLAY] `rake fablab:fix:recursive_events_over_DST`
 
 ## v2.5.10 2017 August 16
 

lib/tasks/fablab/fix.rake

@@ -57,5 +57,20 @@ namespace :fablab do
         end
       end
     end
+
+    task recursive_events_over_DST: :environment do
+      #TODO intensive testing before release
+      include ApplicationHelper
+      groups = Event.group(:recurrence_id).count
+      groups.keys.each do |recurrent_event_id|
+        initial_event = Event.find(recurrent_event_id)
+        Event.where(recurrence_id: recurrent_event_id).where.not(id: recurrent_event_id).each do |event|
+          availability = event.availability
+          availability.start_at = dst_correction(initial_event.availability.start_at, availability.start_at)
+          availability.end_at = dst_correction(initial_event.availability.end_at, availability.end_at)
+          availability.save!
+        end
+      end
+    end
   end
 end