Add translation key method, should be replaced with separate partials.

app/helpers/notifications_helper.rb

@@ -1,33 +1,31 @@
 module NotificationsHelper
   def object_link(note)
-    target_type = note.class
-    case target_type
-    when Notifications::Mentioned
+    target_type = note.translation_key
+    if note.instance_of?(Notifications::Mentioned)
       post = Mention.find(note.target_id).post
       if post
         "#{translation(target_type)} #{link_to t('notifications.post'), object_path(post)}".html_safe
       else
         "#{translation(target_type)} #{t('notifications.deleted')} #{t('notifications.post')}"
       end
-    when Notifications::RequestAccepted
+    elsif note.instance_of?(Notifications::RequestAccepted)
       translation(target_type)
-    when Notifications::NewRequest
+    elsif note.instance_of?(Notifications::NewRequest)
       translation(target_type)
-    when Notifications::CommentOnPost
+    elsif note.instance_of?(Notifications::CommentOnPost)
       post = Post.where(:id => note.target_id).first
       if post
         "#{translation(target_type)} #{link_to t('notifications.post'), object_path(post)}".html_safe
       else
         "#{translation(target_type)} #{t('notifications.deleted')} #{t('notifications.post')}"
       end
-    when Notifications::AlsoCommented
+    elsif note.instance_of?(Notifications::AlsoCommented)
       post = Post.where(:id => note.target_id).first
       if post
         "#{translation(target_type, post.person.name)} #{link_to t('notifications.post'), object_path(post)}".html_safe
       else
         t('notifications.also_commented_deleted')
       end
-    else
     end
   end
 

app/models/notifications/also_commented.rb

@@ -2,4 +2,7 @@ class Notifications::AlsoCommented < Notification
   def mail_job
     Job::MailAlsoCommented
   end
+  def translation_key
+    'also_commented'
+  end
 end

app/models/notifications/comment_on_post.rb

@@ -2,4 +2,7 @@ class Notifications::CommentOnPost < Notification
   def mail_job
     Job::MailCommentOnPost
   end
+  def translation_key
+    'comment_on_post'
+  end
 end

app/models/notifications/mentioned.rb

@@ -2,4 +2,7 @@ class Notifications::Mentioned < Notification
   def mail_job
     Job::MailMentioned
   end
+  def translation_key
+    'mentioned'
+  end
 end

app/models/notifications/new_request.rb

@@ -2,4 +2,7 @@ class Notifications::NewRequest < Notification
   def mail_job
     Job::MailRequestReceived
   end
+  def translation_key
+    'new_request'
+  end
 end

app/models/notifications/request_accepted.rb

@@ -2,4 +2,7 @@ class Notifications::RequestAccepted < Notification
   def mail_job
     Job::MailRequestAcceptance
   end
+  def translation_key
+    'request_accepted'
+  end
 end