confirmation on event filter deletion

app/assets/javascripts/controllers/admin/events.coffee

@@ -129,8 +129,8 @@ class EventsController
 ##
 # Controller used in the events listing page (admin view)
 ##
-Application.Controllers.controller "AdminEventsController", ["$scope", "$state", 'Event', 'Category', 'EventTheme', 'AgeRange', 'eventsPromise', 'categoriesPromise', 'themesPromise', 'ageRangesPromise'
-, ($scope, $state, Event, Category, EventTheme, AgeRange, eventsPromise, categoriesPromise, themesPromise, ageRangesPromise) ->
+Application.Controllers.controller "AdminEventsController", ["$scope", "$state", 'dialogs','Event', 'Category', 'EventTheme', 'AgeRange', 'eventsPromise', 'categoriesPromise', 'themesPromise', 'ageRangesPromise', '_t'
+, ($scope, $state, dialogs, Event, Category, EventTheme, AgeRange, eventsPromise, categoriesPromise, themesPromise, ageRangesPromise, _t) ->
 
 
 
@@ -191,8 +191,14 @@ Application.Controllers.controller "AdminEventsController", ["$scope", "$state",
   # @param index {number} element index in the $scope[model] array
   ##
   $scope.removeElement = (model, index) ->
-    getModel(model)[0].delete getModel(model)[1][index]
-    getModel(model)[1].splice(index, 1)
+    dialogs.confirm
+      resolve:
+        object: ->
+          title: _t('confirmation_required')
+          msg: _t('do_you_really_want_to_delete_this_ELEMENT_used_NUMBER_times', {ELEMENT:model, NUMBER:getModel(model)[1][index].related_to}, "messageformat")
+    , -> # delete confirmed
+      getModel(model)[0].delete getModel(model)[1][index]
+      getModel(model)[1].splice(index, 1)
 
 
 
@@ -203,6 +209,7 @@ Application.Controllers.controller "AdminEventsController", ["$scope", "$state",
   $scope.addElement = (model) ->
     $scope.inserted[model] =
       name: ''
+      related_to: 0
     getModel(model)[1].push($scope.inserted[model])
 
 

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

@@ -1,3 +1,6 @@
+user_is_admin = (current_user and current_user.is_admin?)
+
 json.array!(@age_ranges) do |ar|
   json.extract! ar, :id, :name
+  json.related_to ar.events.count if user_is_admin
 end

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

@@ -1,3 +1,6 @@
+user_is_admin = (current_user and current_user.is_admin?)
+
 json.array!(@categories) do |category|
   json.extract! category, :id, :name
+  json.related_to category.events.count if user_is_admin
 end

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

@@ -1,3 +1,6 @@
+user_is_admin = (current_user and current_user.is_admin?)
+
 json.array!(@event_themes) do |theme|
   json.extract! theme, :id, :name
+  json.related_to theme.events.count if user_is_admin
 end

config/locales/app.admin.en.yml

@@ -84,6 +84,7 @@ en:
         add_a_theme: "Add a theme"
         age_ranges: "Age ranges"
         add_a_range: "Add a range"
+        do_you_really_want_to_delete_this_ELEMENT_used_NUMBER_times: "Do you really want to delete this {ELEMENT, select, category{category} theme{theme} age_range{age range} other{element}}? {NUMBER, plural, =0{It is not currently associated with any events} one{Currently, it is associated with only one event} other{Currently, it is associated with {NUMBER} events}}."  # messageFormat interpolation
 
       events_new:
         # add a new event

config/locales/app.admin.fr.yml

@@ -84,6 +84,7 @@ fr:
         add_a_theme: "Ajouter une thématique"
         age_ranges: "Tranches d'âge"
         add_a_range: "Ajouter une tranche"
+        do_you_really_want_to_delete_this_ELEMENT_used_NUMBER_times: "Voulez-vous vraiment supprimer cette {ELEMENT, select, category{catégorie} theme{thématique} age_range{tranche d'âge} other{élément}} ? {NUMBER, plural, =0{Elle n'est actuellement associée à aucun évènement} one{Elle est actuellement associée à un seul évènement} other{Elle est actuellement associée à {NUMBER} évènements}}."  # messageFormat interpolation
 
       events_new:
         # ajouter un nouveau atelier/stage