`

app/models/article.rb

@@ -1,7 +1,8 @@
 class Article < ActiveRecord::Base
   
+  belongs_to :user, :foreign_key => 'created_by'
+  
   before_create :b_create
-  before_update :b_update
   before_destroy :b_destroy
   
   def b_create
@@ -12,7 +13,7 @@ class Article < ActiveRecord::Base
     #ToDo destroy comments
   end
   
-  def self.created
-    "#{self.email} (#{self.created_at})"
+  def created
+    "#{self.user.email} (#{self.created_at})"
   end
 end

app/models/user.rb

@@ -1,4 +1,6 @@
 class User < ActiveRecord::Base
+  
+  has_many :articles, :foreign_key => 'created_by'
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable, :registerable,