.@each on leafs is deprecated in favor of .[]

app/assets/javascripts/admin/controllers/admin-api.js.es6

@@ -63,6 +63,6 @@ export default Ember.ArrayController.extend({
   **/
   hasMasterKey: function() {
     return !!this.get('model').findBy('user', null);
-  }.property('model.@each')
+  }.property('model.[]')
 
 });

app/assets/javascripts/admin/controllers/admin-user-badges.js.es6

@@ -40,7 +40,7 @@ export default Ember.ArrayController.extend({
     return _(expanded).sortBy(group => group.granted_at).reverse().value();
 
 
-  }.property('model', 'model.@each', 'model.expandedBadges.@each'),
+  }.property('model', 'model.[]', 'model.expandedBadges.[]'),
 
   /**
     Array of badges that have not been granted to this user.
@@ -62,7 +62,7 @@ export default Ember.ArrayController.extend({
     });
 
     return _.sortBy(badges, badge => badge.get('name'));
-  }.property('badges.@each', 'model.@each'),
+  }.property('badges.[]', 'model.[]'),
 
   /**
     Whether there are any badges that can be granted.

app/assets/javascripts/admin/controllers/admin-user-index.js.es6

@@ -27,7 +27,7 @@ export default Ember.Controller.extend(CanCheckEmails, {
       });
     }
     return [];
-  }.property('model.user_fields.@each'),
+  }.property('model.user_fields.[]'),
 
   actions: {
     toggleTitleEdit() {

app/assets/javascripts/admin/views/admin-backups-logs.js.es6

@@ -27,7 +27,7 @@ export default Ember.View.extend({
       // force rerender
       this.rerender();
     }
-  }, 150).observes("controller.model.@each"),
+  }, 150).observes("controller.model.[]"),
 
   render(buffer) {
     const formattedLogs = this.get("formattedLogs");