(feat) clean ghost availabilities and slots

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Fix a bug: unable to start Fab-manager with message: maximum must be a nonnegative Integer
 - Fix a bug: unable to export orders statistics
 - Fix a bug: invalid shell coloring during setup
+- [TODO DEPLOY] `fablab:maintenance:clean_availabilities`
 
 ## v5.7.0 2023 February 17
 

lib/tasks/fablab/maintenance.rake

@@ -139,6 +139,11 @@ namespace :fablab do
       puts '-> Done'
     end
 
+    desc 'Remove ghost availabilities and slots'
+    task clean_availabilities: :environment do
+      Availability.where(available_type: 'unknown').destroy_all
+    end
+
     def dates_from_args(args)
       year = args.year || Time.current.year
       month = args.month || Time.current.month