model search filter

app/models/product.rb

@@ -1,6 +1,7 @@
 class Product < ActiveRecord::Base
     has_paper_trail
     self.table_name = 'products'
+    Product = Product.where("id = ?", 1).first
     belongs_to :product_cat, :foreign_key => :category_id
     belongs_to :merchant, :foreign_key => :merchant_id
     validates :name,:buy_price,:price,:category_id,:count,:robo_balance_price, presence: true