Behaviors are shared constructs that several models may adopt in order to re-use code. Although you can use traits to reuse code, behaviors have several benefits that make them more appealing. Traits require you to use exactly the same field names for common code to work. Behaviors are more flexible.
The ORM provides an API to implement behaviors in your models. Also, you can use the events and callbacks as seen before as an alternative to implement behaviors.
A behavior must be added in the model initializer, a model can have zero or more behaviors :
<?php
use Phalcon\Mvc\Model;
use Phalcon\Mvc\Model\Behavior\Timestampable;
class Invoices extends Model
{
/**
* @var int
*/
public $inv_id;
/**
* @var string
*/
public $inv_created_at;
/**
* @var int
*/
public $inv_status_flag;
/**
* @var string
*/
public $inv_title;
public function initialize()
{
$this->addBehavior(
new Timestampable(
[
'beforeCreate' => [
'field' => 'inv_created_at',
'format' => 'Y-m-d',
],
]
)
);
}
}
