Replaced negative operator in line 15

app/helpers/sessions_helper.rb

@@ -12,7 +12,7 @@ module SessionsHelper
 
 
   # Return true if the user is logged in, false otherwise . 
   # Return true if the user is logged in, false otherwise . 
   def logged_in?
   def logged_in?
-    !current_user.nil?
+   current_user.present?
   end
   end
 
 
   # Logs out the current user
   # Logs out the current user