refactored login process, added remember option for login

app/logical/session_creator.rb

@@ -0,0 +1,28 @@
+class SessionCreator
+  attr_reader :session, :cookies, :name, :password, :remember
+  
+  def initialize(session, cookies, name, password, remember)
+    @session = session
+    @cookies = cookies
+    @name = name
+    @password = password
+    @remember = remember
+  end
+  
+  def authenticate
+    if User.authenticate(name, password)
+      user = User.find_by_name(name)
+      user.update_column(:last_logged_in_at, Time.now)
+      
+      if remember.present?
+        cookies[:user_name] = {:expires => 1.year.from_now, :value => user.name}
+        cookies[:cookie_password_hash] = {:expires => 1.year.from_now, :value => user.cookie_password_hash}
+      end
+      
+      session[:user_id] = user.id
+      return true
+    else
+      return false
+    end
+  end
+end