Add flash

app/controllers/settings/contacts/security_notification_switches_controller.rb

@@ -11,7 +11,13 @@ class Settings::Contacts::SecurityNotificationSwitchesController \
     @contact.send_security_notifications = !@contact.send_security_notifications
     @contact.save!
 
-    redirect_to settings_contacts_url
+    redirect_to(
+      settings_contacts_url,
+      notice: translate_flash(
+        @contact.send_security_notifications,
+        value: @contact.value,
+      ),
+    )
   end
 
 private

config/locales/flash/en.yml

@@ -8,5 +8,9 @@ en:
       create:
         true: 'Contact "%{value}" was made public.'
         false: 'Contact "%{value}" was made private.'
+    settings/contacts/security_notification_switches:
+      create:
+        true: 'Contact "%{value}" was subscribed to security notifications.'
+        false: 'Contact "%{value}" was unsubscribed from security notifications.'
     settings/profiles:
       update: 'Public profile was successfully updated.'

config/locales/flash/ru.yml

@@ -8,5 +8,9 @@ ru:
       create:
         true: 'Контакт "%{value}" сделан публичным.'
         false: 'Контакт "%{value}" сделан приватным.'
+    settings/contacts/security_notification_switches:
+      create:
+        true: 'Контакт "%{value}" подписан на уведомления безопасности.'
+        false: 'Контакт "%{value}" отписан от уведомлений безопасности.'
     settings/profiles:
       update: 'Публичный профиль успешно изменён.'