more before_destroy and after_create

app/controllers/ajax/comment_controller.rb

@@ -35,10 +35,7 @@ class Ajax::CommentController < ApplicationController
       return
     end
 
-    comment.user.decrement! :commented_count
-    comment.answer.decrement! :comment_count
-    Notification.denotify comment.answer.user, comment
-    @count = comment.answer.comment_count
+    @count = comment.answer.comment_count - 1
     comment.destroy
 
     @status = :okay

app/models/comment.rb

@@ -6,6 +6,18 @@ class Comment < ActiveRecord::Base
 
   validates :content, length: { maximum: 160 }
 
+  after_create do
+    Notification.notify answer.user, self unless answer.user == self.user
+    user.increment! :commented_count
+    answer.increment! :comment_count
+  end
+
+  before_destroy do
+    Notification.denotify answer.user, self unless answer.user == self.user
+    user.decrement! :commented_count
+    answer.decrement! :comment_count
+  end
+
   def notification_type(*_args)
     Notifications::Commented
   end

app/models/question.rb

@@ -5,10 +5,13 @@ class Question < ActiveRecord::Base
 
   validates :content, length: { maximum: 255 }
 
+  before_destroy do
+    user.decrement! :asked_count unless self.author_is_anonymous
+  end
+
   def can_be_removed?
     return false if self.answers.count > 0
     return false if Inbox.where(question: self).count > 1
-    self.user.decrement! :asked_count unless self.author_is_anonymous
     true
   end
 end

app/models/user.rb

@@ -107,10 +107,7 @@ class User < ActiveRecord::Base
   end
 
   def comment(answer, content)
-    comment = Comment.create!(user: self, answer: answer, content: content)
-    Notification.notify answer.user, comment unless answer.user == self
-    increment! :commented_count
-    answer.increment! :comment_count
+    Comment.create!(user: self, answer: answer, content: content)
   end
 
   # @return [Boolean] is the user a moderator?