codesnips

ecommerce

ruby 
class Cart < ApplicationRecord
  has_many :cart_items, dependent: :destroy

  EXPIRY_WINDOW = 2.hours

  scope :active, -> { where(state: :active) }

Expire Stale Shopping Carts With a Rails Scope and a Recurring Reaper Job

rails activerecord background-jobs
by codesnips 3 tabs
php 
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

Apply and Validate Coupon Codes with a Cart Totals Service in Laravel

laravel eloquent service-layer
by codesnips 4 tabs
javascript 
import { useState, useEffect, useCallback } from 'react';

export function useLocalStorage(key, initialValue) {
  const readValue = useCallback(() => {
    if (typeof window === 'undefined') return initialValue;
    try {

Persist a React Shopping Cart to localStorage with a Context Provider

javascript react context
by codesnips 3 tabs
ruby 
require 'sinatra/base'
require_relative 'cart'
require_relative 'cart_helpers'

class StoreApp < Sinatra::Base
  enable :sessions

Session-Backed Shopping Cart with Sinatra Helpers and a Cart Value Object

sinatra sessions shopping-cart
by codesnips 3 tabs