gistfile1.php

namespace common\components;

use \yii\web\UrlManager as BaseUrlManager;

class UrlManager extends BaseUrlManager {
    
    protected $choice;
    
    public function init() {
        Component::init();
    
        if ($this->choice === null) {
            $this->choice = $this->rulesChooser();
        }
        
        // ugly, we'll clean this up in a bit
        $this->rules = $this->rules[$this->choice];

        if (!$this->enablePrettyUrl || empty($this->rules)) {
            return;
        }
        if (is_string($this->cache)) {
            $this->cache = Yii::$app->get($this->cache, false);
        }
        if ($this->cache instanceof Cache) {
            $cacheKey = __CLASS__ . $this->choice;
            $hash = md5(json_encode($this->rules));
            if (($data = $this->cache->get($cacheKey)) !== false && isset($data[1]) && $data[1] === $hash) {
                $this->rules = $data[0];
            } else {
                $this->rules = $this->buildRules($this->rules);
                $this->cache->set($cacheKey, [$this->rules, $hash]);
            }
        } else {
            $this->rules = $this->buildRules($this->rules);
        }
    }

    protected function rulesChooser() {
        ...
    }
    
    public function parseRequest($request) {
        // .. not sure it's needed
    }
    
    public function createUrl($params) {
        // we will need this
    }
}