87 lines
2.2 KiB
PHP
87 lines
2.2 KiB
PHP
<?php
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namespace Httpcb\Mvc\Model\Behavior;
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use Phalcon\Mvc\Model\Behavior,
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Phalcon\Mvc\Model\BehaviorInterface,
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Phalcon\Mvc\Model\Exception;
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/**
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* Generates a unique base64 url-safe id for the field specified.
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*
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* Class RandomId
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* @package Mvc\Model\Behavior
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*/
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class RandomId extends Behavior implements BehaviorInterface
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{
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/**
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* Constructor.
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*
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* @param array|null $options
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* @throws Exception
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*/
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public function __construct($options = null)
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{
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if (!isset($options['field']) || strlen($options['field']) < 1) {
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throw new Exception("'field' must be set in the option array.");
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}
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if (isset($options['length'])) {
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if (!is_numeric($options['length'])) {
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throw new Exception("'length' must be a number.");
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}
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} else {
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$options['length'] = 32;
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}
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parent::__construct($options);
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}
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/**
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* @param string $type
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* @param \Phalcon\Mvc\ModelInterface $model
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* @throws \Phalcon\Security\Exception
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*/
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public function notify($type, \Phalcon\Mvc\ModelInterface $model)
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{
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switch($type) {
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case 'beforeValidationOnCreate' :
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$this->generateId($model);
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break;
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}
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}
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/**
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* @param \Phalcon\Mvc\ModelInterface $model
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* @throws \Phalcon\Security\Exception
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*/
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public function generateId(\Phalcon\Mvc\ModelInterface $model)
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{
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$field = $this->options['field'];
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$len = $this->options['length'];
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if (isset($this->options['expression'])) {
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$expr = 'AND ' . $this->options['expression'];
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} else {
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$expr = '';
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}
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if ($model->$field === null) {
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$random = new \Phalcon\Security\Random();
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for($i = 0; $i < 3; $i++) {
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$id = substr($random->base64Safe(), 0, $len);
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$count = $model->count(array(
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"$field = ?0 $expr",
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'bind' => array($id)
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));
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if ($count < 1) {
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$model->$field = $id;
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break;
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}
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}
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}
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}
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}
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