Adding certifications; messed up adding certification_users so not staging those

app/models/ability.rb

@@ -5,10 +5,14 @@ class Ability
     if !user.nil?
       if user.admin?
         can :manage, :all
-      else
-        can :read, User
-        can :read, Card, :user_id => user.id
       end
+      if user.instructor? 
+        can :manage, Certification
+      end
+
+      can :read, User
+      can :read, Certification
+      can :read, Card, :user_id => user.id
     end 
     # Define abilities for the passed in user here. For example:
     #

app/models/certification.rb

@@ -0,0 +1,4 @@
+class Certification < ActiveRecord::Base
+  attr_accessible :description, :name
+  has_many :users, :through => :certifications_users
+end

app/models/user.rb

@@ -6,7 +6,8 @@ class User < ActiveRecord::Base
          :recoverable, :rememberable, :trackable, :validatable
 
   # Setup accessible (or protected) attributes for your model
-  attr_accessible :email, :password, :password_confirmation, :remember_me, :name, :admin, :active, :emergency_name, :emergency_phone, :current_skills, :desired_skills, :waiver, :emergency_email, :phone, :payment_method, :orientation, :member_level
+  attr_accessible :email, :password, :password_confirmation, :remember_me, :name, :admin, :instructor, :active, :emergency_name, :emergency_phone, :current_skills, :desired_skills, :waiver, :emergency_email, :phone, :payment_method, :orientation, :member_level
 
   has_many :cards
+  has_many :certifications, :through => :certifications_users
 end