update code: product on category page

venshop_app/app/controllers/product_categories_controller.rb

@@ -2,7 +2,7 @@ class ProductCategoriesController < ApplicationController
   add_breadcrumb "Products", :products_path
 
   def show
-    if ProductCategory.exists?(params[:id])
+    if ProductCategory.where(id: params[:id]).exists?
     	term = ProductCategory.find(params[:id])
   		@items = Product.get_products_by_category(product_category_id: params[:id], page: params[:page], limit: 24)
   		@title = term.name

venshop_app/app/models/product.rb

@@ -55,11 +55,10 @@ class Product
     limit = options[:limit]
     product_category_id = options[:product_category_id]
     page = options[:page]
-    return Product.select('id, name, image_medium, price, price_currency')
-    .where(availability: 'instock', product_category_id: product_category_id)
+    return Product.where(availability: 'instock', product_category_id: product_category_id)
       .where(status: true)
+      .desc(:created_at).desc(:updated_at).asc(:name)
       .paginate(:page => page, :per_page => limit)
-    .order('created_at DESC').order('updated_at DESC').order('name')
   end
 
   #Returns other products