Use Eloquent In CodeIgniter2

This is a demo of use eloquent in CodeIgniter2. You don't do much change to use Eloquent in your origin project.

The Eloquent ORM provides a beautiful, simple ActiveRecord implementation for working with your database. Each database table has a corresponding "Model" which is used to interact with that table. Models allow you to query for data in your tables, as well as insert new records into the table.

Let's Start

Require

PHP version >= 5.4 Composer

Step 1 Install Eloquent

Use Composer to Install Eloquent. so you need to create a composer.json file.

{
    "require": {
        "php": ">=5.4.0",
        "illuminate/database": "*"
    },
}

after create composer.json in your project, then run composer update, this command will help you to install Eloquent in the /vendor directory

Step 2 Load Eloquent Into Project

create application/third_party/eloquent.php file after finish the command composer update, a autoload.php will generate in the vendor directory. require the autoload.php && database.php into the project, then you can boot Eloquent

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

use Illuminate\Database\Capsule\Manager as Capsule;
// Autoload
require BASEPATH.'../vendor/autoload.php';
//database config
require_once APPPATH.'config/database.php';
// Eloquent ORM
$capsule = new Capsule;
$capsule->addConnection($db['eloquent']);
$capsule->bootEloquent();

Step 3 Load eloquent.php while the CI project init

//load Eloquent to CI
require APPPATH.'third_party/eloquent.php';

add the line before require_once BASEPATH.'core/CodeIgniter.php

Step 4 Create Model

Create Model file; create application/models/Article.php file

<?php

defined('BASEPATH') OR exit('No direct script access allowed');
/**
* Article Model
*/
class Article extends Illuminate\Database\Eloquent\Model
{
    public $timestamps = false;
}

Step 5 Create Table && Insert test record

use database/Articles.sql to create a Article table and add some record for test.

DROP TABLE IF EXISTS `articles`;

CREATE TABLE `articles` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `title` varchar(255) DEFAULT NULL,
  `content` longtext,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

LOCK TABLES `articles` WRITE;
/*!40000 ALTER TABLE `articles` DISABLE KEYS */;

INSERT INTO `articles` (`id`, `title`, `content`)
VALUES
    (1,'This is artice 1','This is the first Article Content'),
    (2,'This is artice 2','This is the second Article Content');

/*!40000 ALTER TABLE `articles` ENABLE KEYS */;
UNLOCK TABLES;

Step 6 Use Composer autoload Model file

update composer.php,

{
    "require": {
        "php": ">=5.4.0",
        "illuminate/database": "*"
    },
    "autoload": {
        "classmap": [
            "application/models"
        ]
    }
}

after update composer.php, then run the command composer dump-autoload to generate new autoload.php file.

Step 7 Enjoy Eloquent In your Project

Create those file in the project

application\controller\home.php
application\views\list.php
application\views\detail.php

##It's easy to use Eloquent in the CodeIgniter2, right? If your project is hard to upgrade to Laravel, or you don't like Laravel, this is a good way for you to use Eloquent.

#Thanks

WillZWL / CodeIgniter-with-Eloquent