Pas de cache, pas assez utiles :)

app/admin/region.rb

@@ -1,7 +1,3 @@
 ActiveAdmin.register Region do
   permit_params :name
-
-  after_update do
-    expire_fragment 'regions'
-  end
 end

app/views/events/index.html.haml

@@ -1,7 +1,6 @@
 -# Seems necessary, for the time being, to ensure calendar is changing days correctly
 - Time.zone = 'Paris'
 
-- cache 'regions' do
 = render '/regions/selector'
 = render '/lugs/search'
 
@@ -22,7 +21,8 @@
         root_url(start_date: start_date), class: 'month_selector' } do |date, events|
       .day_number= date.day
       %ul.events
-        - events.select { |e| e.start_time.to_date <= date and date <= e.end_time.to_date }.sort_by { |e| e.city }.each do |event|
+        - events.select { |e| e.start_time.to_date <= date and date <= e.end_time.to_date }
+        -   .sort_by { |e| e.city }.each do |event|
           %li.event
             = link_to event do
               %strong.city= event.city.gsub '-', ' '
@@ -40,7 +40,8 @@
       { param => (date_range.last + 1.day).beginning_of_month, tag: params[:tag], region: params[:region] } } do |date, events|
     .day_number= date.day
     %ul.events
-      - events.select { |e| e.start_time.to_date <= date and date <= e.end_time.to_date }.sort_by { |e| e.city }.each do |event|
+      - events.select { |e| e.start_time.to_date <= date and date <= e.end_time.to_date }
+      -   .sort_by { |e| e.city }.each do |event|
         %li.event
           = link_to event do
             %strong.city= event.city.gsub '-', ' '