created subcategories

app/controllers/sub_categories_controller.rb

@@ -0,0 +1,5 @@
+class SubCategoriesController < ApplicationController
+  active_scaffold :"sub_category" do |conf|
+    conf.columns = [:name]
+  end
+end

app/helpers/sub_categories_helper.rb

@@ -0,0 +1,2 @@
+module SubCategoriesHelper
+end

app/models/Category.rb

@@ -1,2 +1,3 @@
 class Category < ActiveRecord::Base  
+  has_many :sub_categories
 end

app/models/sub_category.rb

@@ -0,0 +1,3 @@
+class SubCategory < ActiveRecord::Base
+  belongs_to :category
+end