Add permalink field to enterprise groups

app/models/enterprise_group.rb

@@ -15,6 +15,7 @@ class EnterpriseGroup < ActiveRecord::Base
 
   validates :name, presence: true
   validates :description, presence: true
+  validates :permalink, uniqueness: true, presence: true
 
   attr_accessible :name, :description, :long_description, :on_front_page, :enterprise_ids
   attr_accessible :owner_id

db/migrate/20150527004427_add_permalink_to_groups.rb

@@ -0,0 +1,26 @@
+class AddPermalinkToGroups < ActiveRecord::Migration
+  def up
+    add_column :enterprise_groups, :permalink, :string
+
+    EnterpriseGroup.reset_column_information
+
+    EnterpriseGroup.all.each do |group|
+      counter = 1
+      permalink = group.name.parameterize
+      permalink = "my-group-name" if permalink == ""
+      while EnterpriseGroup.find_by_permalink(permalink) do
+        permalink = group.name.parameterize + counter.to_s
+        counter += 1
+      end
+
+      group.update_column :permalink, permalink
+    end
+
+    change_column :enterprise_groups, :permalink, :string, null: false
+    add_index :enterprise_groups, :permalink, :unique => true
+  end
+
+  def down
+    remove_column :enterprise_groups, :permalink
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20150424151117) do
+ActiveRecord::Schema.define(:version => 20150527004427) do
 
   create_table "adjustment_metadata", :force => true do |t|
     t.integer "adjustment_id"
@@ -236,10 +236,12 @@ ActiveRecord::Schema.define(:version => 20150424151117) do
     t.string   "linkedin",                 :default => "", :null => false
     t.string   "twitter",                  :default => "", :null => false
     t.integer  "owner_id"
+    t.string   "permalink",                                :null => false
   end
 
   add_index "enterprise_groups", ["address_id"], :name => "index_enterprise_groups_on_address_id"
   add_index "enterprise_groups", ["owner_id"], :name => "index_enterprise_groups_on_owner_id"
+  add_index "enterprise_groups", ["permalink"], :name => "index_enterprise_groups_on_permalink", :unique => true
 
   create_table "enterprise_groups_enterprises", :id => false, :force => true do |t|
     t.integer "enterprise_group_id"
@@ -619,9 +621,9 @@ ActiveRecord::Schema.define(:version => 20150424151117) do
     t.string   "email"
     t.text     "special_instructions"
     t.integer  "distributor_id"
-    t.integer  "order_cycle_id"
     t.string   "currency"
     t.string   "last_ip_address"
+    t.integer  "order_cycle_id"
     t.integer  "cart_id"
   end
 

spec/factories.rb

@@ -135,6 +135,7 @@ FactoryGirl.define do
 
   factory :enterprise_group, :class => EnterpriseGroup do
     name 'Enterprise group'
+    sequence(:permalink) { |n| "group#{n}" }
     description 'this is a group'
     on_front_page false
     address { FactoryGirl.build(:address) }