class SellersController < ApplicationController
  before_action :set_cookies

  def show
    @seller = Seller.find(params[:id])
    @user = cookies[:user]
    @shop = cookies[:shop]
    @listings = Listing.where(shop: @shop).paginate(page: params[:page])
  end

  private
    def set_cookies
      cookies[:user] = current_user
      cookies[:seller] = Seller.find(params[:id])
      cookies[:shop] = Shop.where(seller: cookies[:seller]).first
    end
end

class TitlesController < ApplicationController
  before_action :find_data

  def index
    @titles = Title.last
  end

  private
    def find_data
      @shop = cookies[:shop]
      @seller = cookies[:seller]
      @user = cookies[:user]
    end
end

@shop
=> "#<Shop:0x00007f433f785dc8>"
>>
@shop.inspect
=> ""#<Shop:0x00007f433f785dc8>""
>>
cookies[:shop].class
=> String