<?php
namespace Illuminate\Database\Eloquent\Concerns;
trait HasUniqueIds
{
/**
* Indicates if the model uses unique ids.
*
* @var bool
*/
public $usesUniqueIds = false;
/**
* Determine if the model uses unique ids.
*
* @return bool
*/
public function usesUniqueIds()
{
return $this->usesUniqueIds;
}
/**
* Generate unique keys for the model.
*
* @return void
*/
public function setUniqueIds()
{
foreach ($this->uniqueIds() as $column) {
if (empty($this->{$column})) {
$this->{$column} = $this->newUniqueId();
}
}
}
/**
* Generate a new key for the model.
*
* @return string
*/
public function newUniqueId()
{
return null;
}
/**
* Get the columns that should receive a unique identifier.
*
* @return array
*/
public function uniqueIds()
{
return [];
}
}