(bug) event image update not shown

CHANGELOG.md

@@ -4,6 +4,7 @@
 - Export external ID and private notes in the members excel export
 - Ability to buy a new prepaid pack from the user's dashboard
 - Improved public calendar loading time
+- Fix a bug: event image updates are not reflected unless the browser's cache is purged
 - Fix a bug: schedules jobs are not launched at the right time
 - [TODO DEPLOY] `rails fablab:fix_availabilities` THEN `rails fablab:setup:build_places_cache`
 - [TODO DEPLOY] `\curl -sSL https://raw.githubusercontent.com/sleede/fab-manager/master/scripts/rename-supporting-document.sh | bash`

app/views/api/events/_event.json.jbuilder

@@ -5,7 +5,7 @@ if event.event_image
   json.event_image_attributes do
     json.id event.event_image.id
     json.attachment_name event.event_image.attachment_identifier
-    json.attachment_url event.event_image.attachment_url
+    json.attachment_url "#{event.event_image.attachment_url}?#{event.event_image.updated_at.to_i}"
   end
 end
 json.event_files_attributes event.event_files do |f|

app/views/api/events/index.json.jbuilder

@@ -4,7 +4,7 @@ total = @events.except(:offset, :limit, :order).count
 
 json.array!(@events) do |event|
   json.partial! 'api/events/event', event: event
-  json.event_image_small event.event_image.attachment.small.url if event.event_image
+  json.event_image_small "#{event.event_image.attachment.small.url}?#{event.event_image.updated_at.to_i}" if event.event_image
 
   json.nb_total_events total
 end