"X assigned you Y" instead of "X assigned Y"

app/helpers/todos_helper.rb

@@ -7,6 +7,13 @@ module TodosHelper
     current_user.todos.done.count
   end
 
+  def todo_action_name(todo)
+    case todo.action
+    when Todo::ASSIGNED then 'assigned you'
+    when Todo::MENTIONED then 'mentioned you on'
+    end
+  end
+
   def todo_target_link(todo)
     target = todo.target_type.titleize.downcase
     link_to "#{target} #{todo.target.to_reference}", todo_target_path(todo)

app/models/todo.rb

@@ -43,13 +43,6 @@ class Todo < ActiveRecord::Base
     state :done
   end
 
-  def action_name
-    case action
-    when ASSIGNED then 'assigned'
-    when MENTIONED then 'mentioned you on'
-    end
-  end
-
   def body
     if note.present?
       note.note
@@ -57,8 +50,4 @@ class Todo < ActiveRecord::Base
       target.title
     end
   end
-
-  def target_iid
-    target.respond_to?(:iid) ? target.iid : target_id
-  end
 end

app/views/dashboard/todos/_todo.html.haml

@@ -6,7 +6,7 @@
       %span.author_name
         = link_to_author todo
       %span.todo_label
-        = todo.action_name
+        = todo_action_name(todo)
         = todo_target_link(todo)
 
       · #{time_ago_with_tooltip(todo.created_at)}