initial commit

app/library/Mvc/Model/Behavior/RandomId.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace Mvc\Model\Behavior;
+
+use \Phalcon\Mvc\Model\Behavior;
+use \Phalcon\Mvc\Model\BehaviorInterface;
+use \Phalcon\Exception;
+
+/**
+ * Generates a unique base64 url-safe id for the field specified.
+ *
+ * Class RandomId
+ * @package Mvc\Model\Behavior
+ */
+class RandomId extends Behavior implements BehaviorInterface
+{
+    public function __construct($options = null)
+    {
+        $field = null;
+        if (isset($options['field'])) {
+            $field = $options['field'];
+        }
+
+        if (isset($options['length'])) {
+            if (!is_numeric($options['length'])) {
+                throw new Exception("'length' must be a number.");
+            }
+        } else {
+            $options['length'] = 32;
+        }
+
+        if (strlen($field) < 1) {
+            throw new Exception("'field' must be set in the option array.");
+        }
+        parent::__construct($options);
+    }
+
+    public function notify($type, \Phalcon\Mvc\ModelInterface $model)
+    {
+        switch($type) {
+        case 'beforeValidationOnCreate' :
+            $this->generateId($model);
+            break;
+        }
+    }
+
+    public function generateId(\Phalcon\Mvc\ModelInterface $model)
+    {
+        $field = $this->_options['field'];
+
+        if ($model->$field === null) {
+
+            $random = new \Phalcon\Security\Random();
+            for($i = 0; $i < 3; $i++) {
+                $id = $random->base64Safe();
+                $id = substr($id, 0, $this->_options['length']);
+
+                $count = $model->count(array(
+                    "$field = ?0",
+                    'bind' => array($id)
+                ));
+
+                if ($count < 1) {
+                    $model->$field = $id;
+                    break;
+                }
+            }
+        }
+    }
+}