Rails Session Use Examples

session_example.rb

class Counter
  def self.counter(session)
    session[:hit_counter] ||= 0
    session[:hit_counter] += 1
  end
end

# access with
class ItemsController < ApplicationController
  before_action :load_counter
  
  def load_counter
    session[:counter] ||= 0
    session[:counter] += 1
    @visits_count = session[:counter]
  end
end

def load_cart
  @cart = Cart.new(session[:cart]
end