add management of items !

app/models/wow_item_class.rb

@@ -0,0 +1,10 @@
+class WowItemClass < ApplicationRecord
+  extend Mobility
+  translates :name
+
+  has_many :wow_item_sub_classes, dependent: :destroy
+  has_many :wow_items, dependent: :destroy
+
+  validates :name, presence: true
+  validates :item_class_id, presence: true, uniqueness: true
+end