adding forgotten files

common/behaviors/Slug.php

@@ -0,0 +1,79 @@
+<?php
+
+
+namespace common\behaviors;
+
+
+use dosamigos\transliterator\TransliteratorHelper;
+use yii;
+use yii\base\Behavior;
+use yii\db\ActiveRecord;
+use yii\helpers\Inflector;
+
+class Slug extends Behavior
+{
+    public $in_attribute = 'name';
+    public $out_attribute = 'slug';
+    public $translit = true;
+
+    public function events()
+    {
+        return [
+            ActiveRecord::EVENT_BEFORE_VALIDATE => 'getSlug'
+        ];
+    }
+
+    public function getSlug($event)
+    {
+        if (empty($this->owner->{$this->out_attribute})) {
+            $this->owner->{$this->out_attribute} = $this->generateSlug($this->owner->{$this->in_attribute});
+        } else {
+            $this->owner->{$this->out_attribute} = $this->generateSlug($this->owner->{$this->out_attribute});
+        }
+    }
+
+    private function generateSlug($slug)
+    {
+        $slug = $this->slugify($slug);
+        if ($this->checkUniqueSlug($slug)) {
+            return $slug;
+        } else {
+            for ($suffix = 2; !$this->checkUniqueSlug($new_slug = $slug . '-' . $suffix); $suffix++) {
+            }
+            return $new_slug;
+        }
+    }
+
+    private function slugify($slug)
+    {
+        if ($this->translit) {
+            return Inflector::slug(TransliteratorHelper::process($slug), '-', true);
+        } else {
+            return $this->slug($slug, '-', true);
+        }
+    }
+
+    private function slug($string, $replacement = '-', $lowercase = true)
+    {
+        $string = preg_replace('/[^\p{L}\p{Nd}]+/u', $replacement, $string);
+        $string = trim($string, $replacement);
+        return $lowercase ? strtolower($string) : $string;
+    }
+
+    private function checkUniqueSlug($slug)
+    {
+        $pk = $this->owner->primaryKey();
+        $pk = $pk[0];
+
+        $condition = $this->out_attribute . ' = :out_attribute';
+        $params = [':out_attribute' => $slug];
+        if (!$this->owner->isNewRecord) {
+            $condition .= ' and ' . $pk . ' != :pk';
+            $params[':pk'] = $this->owner->{$pk};
+        }
+
+        return !$this->owner->find()
+            ->where($condition, $params)
+            ->one();
+    }
+}