{"id":3574,"date":"2018-11-01T21:14:06","date_gmt":"2018-11-01T21:14:06","guid":{"rendered":"https:\/\/www.codexworld.com\/?p=3574"},"modified":"2020-06-11T18:15:27","modified_gmt":"2020-06-11T18:15:27","slug":"codeigniter-shopping-cart-checkout-implementation","status":"publish","type":"post","link":"https:\/\/www.codexworld.com\/codeigniter-shopping-cart-checkout-implementation\/","title":{"rendered":"Shopping Cart Implementation in CodeIgniter"},"content":{"rendered":"

Shopping Cart<\/b> is a vital part of every e-commerce application that allows the user to select items for purchase. It helps online customers to purchase multiple items at once. Upon checkout, the shopping cart calculates the total amount for the order, handles the shipping, and shows the order preview. The main challenge of e-commerce website development is shopping cart implementation.<\/p>\n

The SESSION is used to build shopping cart in PHP<\/a>. If your application is developed with CodeIgniter, a shopping cart can be easily integrated with Cart Class. CodeIgniter provides Cart library that helps to integrate shopping cart functionality in the CodeIgniter framework. In this tutorial, we will show you how to implement shopping cart in CodeIgniter<\/b>.<\/p>\n

This shopping cart tutorial demonstrates the cart and checkout process in CodeIgniter 3 application. In the example script, the CodeIgniter Cart library<\/b> will be used to implement core cart functionality. Also, the customer and order information will be stored in the MySQL database.<\/p>\n

Before getting started, take a look at the file structure of the CodeIgniter Shopping Cart<\/b>.<\/p>\n

codeigniter_shopping_cart\/<\/span>\r\n\u251c\u2500\u2500 application\/<\/span>\r\n\u2502   \u251c\u2500\u2500 controllers\/<\/span>\r\n\u2502   \u2502   \u251c\u2500\u2500 Products.php\r\n\u2502   \u2502   \u251c\u2500\u2500 Cart.php\r\n\u2502   \u2502   \u2514\u2500\u2500 Checkout.php\r\n\u2502   \u251c\u2500\u2500 models\/<\/span>\r\n\u2502   \u2502   \u2514\u2500\u2500 Product.php\r\n\u2502   \u2514\u2500\u2500 views\/<\/span>\r\n\u2502       \u251c\u2500\u2500 products\/<\/span>\r\n\u2502       \u2502   \u2514\u2500\u2500 index.php\r\n\u2502       \u251c\u2500\u2500 cart\/<\/span>\r\n\u2502       \u2502   \u2514\u2500\u2500 index.php\r\n\u2502       \u2514\u2500\u2500 checkout\/<\/span>\r\n\u2502           \u251c\u2500\u2500 index.php\r\n\u2502           \u2514\u2500\u2500 order-success.php\r\n\u251c\u2500\u2500 uploads\/<\/span>\r\n\u2502   \u2514\u2500\u2500 product_images\/<\/span>\r\n\u2514\u2500\u2500 assets\/<\/span>\r\n    \u251c\u2500\u2500 css\/<\/span>\r\n    \u2502   \u251c\u2500\u2500 bootstrap.min.css\r\n    \u2502   \u2514\u2500\u2500 style.css\r\n    \u2514\u2500\u2500 js\/<\/span>\r\n        \u2514\u2500\u2500 jquery.min.js\r\n<\/pre>\n
Create Database Tables<\/h2>\n
To store the products, customers, and orders information, some tables need to be created in the database.<\/p>\n
The following SQL creates a products<\/code> table in the MySQL database.<\/p>\n
CREATE<\/span> TABLE<\/span> `products`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `image`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `name`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `description`<\/span> text<\/span> COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `price`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `status`<\/span> enum('1'<\/span>,'0'<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span> DEFAULT<\/span> '1'<\/span> COMMENT<\/span> '1=Active | 0=Inactive'<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>)\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\n
The following SQL creates a customers<\/code> table in the MySQL database.<\/p>\n
CREATE<\/span> TABLE<\/span> `customers`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `name`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `email`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `phone`<\/span> varchar<\/span>(15<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `address`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `status`<\/span> enum('1'<\/span>,'0'<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span> DEFAULT<\/span> '1'<\/span> COMMENT<\/span> '1=Active | 0=Inactive'<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>)\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\n
The following SQL creates a orders<\/code> table in the MySQL database.<\/p>\n
CREATE<\/span> TABLE<\/span> `orders`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `customer_id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span>,\r\n `grand_total`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `status`<\/span> enum('1'<\/span>,'0'<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span> DEFAULT<\/span> '1'<\/span> COMMENT<\/span> '1=Active | 0=Inactive'<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>),\r\n KEY<\/span> `customer_id`<\/span> (`customer_id`<\/span>),\r\n CONSTRAINT<\/span> `orders_ibfk_1`<\/span> FOREIGN KEY<\/span> (`customer_id`<\/span>) REFERENCES<\/span> `customers`<\/span> (`id`<\/span>) ON<\/span> DELETE<\/span> CASCADE<\/span> ON<\/span> UPDATE<\/span> NO<\/span> ACTION<\/span>\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\n
The following SQL creates an order_items<\/code> table in the MySQL database.<\/p>\n
CREATE<\/span> TABLE<\/span> `order_items`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `order_id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span>,\r\n `product_id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span>,\r\n `quantity`<\/span> int<\/span>(5<\/span>) NOT<\/span> NULL<\/span>,\r\n `sub_total`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>),\r\n KEY<\/span> `order_id`<\/span> (`order_id`<\/span>),\r\n CONSTRAINT<\/span> `order_items_ibfk_1`<\/span> FOREIGN KEY<\/span> (`order_id`<\/span>) REFERENCES<\/span> `orders`<\/span> (`id`<\/span>) ON<\/span> DELETE<\/span> CASCADE<\/span> ON<\/span> UPDATE<\/span> NO<\/span> ACTION<\/span>\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\n
Config<\/h2>\n
autoload.php<\/code><\/b>
\nSpecify some useful library and helper to loaded by default.<\/p>\n
$autoload<\/span>[<\/span>'libraries'<\/span>] = array(<\/span>'database'<\/span>, <\/span>'session'<\/span>);

<\/span>
$autoload<\/span>[<\/span>'helper'<\/span>] = array(<\/span>'url'<\/span>);<\/span><\/pre>\n
Controllers<\/h2>\n
The following controllers are used to handle the shopping cart, checkout, and order submission process.<\/p>\n
1. Products.php<\/code><\/b>
\nThe Products controller handles the product listing and Add to Cart functionality.<\/p>\n