PHP ORM example application

Laravel ORM

The following tutorial implements a REST API server using the Laravel web development framework. The scenario is that of an e-commerce application. Database access in this application is managed through Laravel's Eloquent ORM.

The source for this application can be found in the Using ORMs with YugabyteDB repository.

Prerequisites

This tutorial assumes that you have:

YugabyteDB up and running. Download and install YugabyteDB by following the steps in Quick start.
PHP 7.3+
Laravel 8.40+
Composer (Dependency Manager for PHP)

Clone the "orm-examples" repository

$ git clone https://github.com/YugabyteDB-Samples/orm-examples.git

There are a number of options that can be customized in the .env file located in the Laravel project. Given YSQL's compatibility with the PostgreSQL language, the datasource DB_CONNECTION property is set to pgsql.

Build the application

$ cd orm-examples/php/laravel

Set up the database to use Laravel migrations

php artisan migrate:install
php artisan migrate:fresh

Load the tables

php artisan db:seed

Run the application

Start the Laravel application's REST API server at http://localhost:8000.

php artisan serve

Send requests to the application

Create 2 users.

$ curl --data '{ "firstName" : "John", "lastName" : "Smith", "email" : "jsmith@example.com" }' \
   -v -X POST -H 'Content-Type:application/json' http://localhost:8000/users

$ curl --data '{ "firstName" : "Tom", "lastName" : "Stewart", "email" : "tstewart@example.com" }' \
   -v -X POST -H 'Content-Type:application/json' http://localhost:8000/users

Create 2 products.

$ curl \
  --data '{ "productName": "Notebook", "description": "200 page notebook", "price": 7.50 }' \
  -v -X POST -H 'Content-Type:application/json' http://localhost:8000/products

$ curl \
  --data '{ "productName": "Pencil", "description": "Mechanical pencil", "price": 2.50 }' \
  -v -X POST -H 'Content-Type:application/json' http://localhost:8000/products

Create 2 orders.

$ curl \
  --data '{ "userId": "2", "products": [ { "productId": 1, "units": 2 } ] }' \
  -v -X POST -H 'Content-Type:application/json' http://localhost:8000/orders

$ curl \
  --data '{ "userId": "2", "products": [ { "productId": 1, "units": 2 }, { "productId": 2, "units": 4 } ] }' \
  -v -X POST -H 'Content-Type:application/json' http://localhost:8000/orders

Query results

Using the YSQL shell

$ ./bin/ysqlsh

ysqlsh (11.2)
Type "help" for help.

yugabyte=#

List the tables created by the app.

yugabyte=# \d

List of relations
 Schema |          Name           |   Type   |  Owner
--------+-------------------------+----------+----------
 public | orderline               | table    | yugabyte
 public | orders                  | table    | yugabyte
 public | orders_user_id_seq      | sequence | yugabyte
 public | products                | table    | yugabyte
 public | products_product_id_seq | sequence | yugabyte
 public | users                   | table    | yugabyte
 public | users_user_id_seq       | sequence | yugabyte
(7 rows)

Note the 4 tables and 3 sequences.

yugabyte=# SELECT count(*) FROM users;

 count
-------
     2
(1 row)

yugabyte=# SELECT count(*) FROM products;

 count
-------
     2
(1 row)

yugabyte=# SELECT count(*) FROM orders;

 count
-------
     2
(1 row)

yugabyte=# SELECT * FROM orderline;

 order_id                             | product_id | units
--------------------------------------+------------+-------
 45659918-bbfd-4a75-a202-6feff13e186b |          1 |     2
 f19b64ec-359a-47c2-9014-3c324510c52c |          1 |     2
 f19b64ec-359a-47c2-9014-3c324510c52c |          2 |     4
(3 rows)

Note that orderline is a child table of the parent orders table connected using a foreign key constraint.

Using the REST API

$ curl http://localhost:8080/users

{
  "content": [
    {
      "userId": 2,
      "firstName": "Tom",
      "lastName": "Stewart",
      "email": "tstewart@example.com"
    },
    {
      "userId": 1,
      "firstName": "John",
      "lastName": "Smith",
      "email": "jsmith@example.com"
    }
  ],
  ...
}

$ curl http://localhost:8080/products

{
  "content": [
    {
      "productId": 2,
      "productName": "Pencil",
      "description": "Mechanical pencil",
      "price": 2.5
    },
    {
      "productId": 1,
      "productName": "Notebook",
      "description": "200 page notebook",
      "price": 7.5
    }
  ],
  ...
}

$ curl http://localhost:8080/orders

{
  "content": [
    {
      "orderTime": "2019-05-10T04:26:54.590+0000",
      "orderId": "999ae272-f2f4-46a1-bede-5ab765bb27fe",
      "user": {
        "userId": 2,
        "firstName": "Tom",
        "lastName": "Stewart",
        "email": "tstewart@example.com"
      },
      "userId": null,
      "orderTotal": 25,
      "products": []
    },
    {
      "orderTime": "2019-05-10T04:26:48.074+0000",
      "orderId": "1598c8d4-1857-4725-a9ab-14deb089ab4e",
      "user": {
        "userId": 2,
        "firstName": "Tom",
        "lastName": "Stewart",
        "email": "tstewart@example.com"
      },
      "userId": null,
      "orderTotal": 15,
      "products": []
    }
  ],
  ...
}