launchkit-codes · December 3, 2014 10:26
diff --git a/_links.html.erb b/_links.html.erb
 <%= link_to "Name", sort: "Name" %>
 <%= link_to "Price", sort: "price" %>
 <%= link_to "Popular", sort: "popular" %>
diff --git a/item.rb b/item.rb
 # Model
 class Item < ActiveRecord::Base
  scope :sort_by, ->(attr) { order(attr) }
 end
diff --git a/items_controller.rb b/items_controller.rb
 class ItemsController < ApplicationController
  def index
    @items = Item.sort_by(params[:sort])
  end
 end
	# Model
	class Item < ActiveRecord::Base
	scope :sort_by, ->(attr) { order(attr) }
	end
	class ItemsController < ApplicationController
	def index
	@items = Item.sort_by(params[:sort])
	end
	end