CatalogUrlManager.php
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<?php
namespace common\modules\product;
use common\modules\product\models\CategorySearch;
use common\modules\product\models\ProductSearch;
use Yii;
use yii\helpers\Url;
use yii\web\HttpException;
use yii\web\UrlRuleInterface;
class CatalogUrlManager implements UrlRuleInterface {
public $route_map = [];
/**
* Parses the given request and returns the corresponding route and parameters.
* @param \yii\web\UrlManager $manager the URL manager
* @param \yii\web\Request $request the request component
* @return array|boolean the parsing result. The route and the parameters are returned as an array.
* If false, it means this rule cannot be used to parse this path info.
*/
public function parseRequest($manager, $request)
{
$pathInfo = $request->getPathInfo();
$paths = explode('/', $pathInfo);
if(isset($paths[1])) {
if(strripos($request->url,'catalog/'.$paths[1].'?') && (!strripos($request->url,'?page')) && (!strripos($request->url,'?sort'))){
throw new HttpException(404 ,'Page not found');
}
}
if (!array_key_exists($paths[0], $this->route_map)) {
return false;
}
$params = [];
if ($paths[0] == 'catalog') {
$route = 'catalog/category';
// Category
if (!empty($paths[1])) {
$category = CategorySearch::findByAlias($paths[1]);
if (empty($category)) {
http_redirect(Url::to(['/']));
}
$params['category'] = $category;
}
if (!empty($paths[2])) {
// Filter
if (strpos($paths[2], 'filters:') === 0) {
$this->parseFilter($paths[2], $params);
}
else {
throw new HttpException(404 ,'Page not found');
}
}
} elseif ($paths[0] == 'product') {
if (!empty($paths[2])) {
throw new HttpException(404 ,'Page not found');
}
$product = ProductSearch::findByAlias($paths[1]);
if (empty($product->product_id)) {
throw new HttpException(404 ,'Page not found');
}
$route = 'catalog/product';
$params = [
'product' => $product,
];
}
return [$route, $params];
}
/**
* Creates a URL according to the given route and parameters.
* @param \yii\web\UrlManager $manager the URL manager
* @param string $route the route. It should not have slashes at the beginning or the end.
* @param array $params the parameters
* @return string|boolean the created URL, or false if this rule cannot be used for creating this URL.
*/
public function createUrl($manager, $route, $params)
{
if (!in_array($route, $this->route_map)) {
return false;
}
switch($route) {
case 'catalog/category':
if (!empty($params['category'])) {
$category_alias = is_object($params['category']) ? $params['category']->alias : strtolower($params['category']);
$url = 'catalog/'. $category_alias .'/';
unset($params['category']);
} else {
$url = 'catalog/';
}
$this->setFilterUrl($params, $url);
foreach ($params as $key => $param) {
if (empty($params[$key])) {
unset($params[$key]);
}
}
if (!empty($params) && ($query = http_build_query($params)) !== '') {
$url .= '?' . $query;
}
return $url;
break;
case 'catalog/product':
if (!empty($params['product'])) {
$product_alias = is_object($params['product']) ? $params['product']->alias : strtolower($params['product']);
unset($params['product']);
}
$url = 'product/'. $product_alias;
if (!empty($params) && ($query = http_build_query($params)) !== '') {
$url .= '?' . $query;
}
return $url;
break;
}
}
private function option_value_encode($value) {
return str_replace(array(',', '/'), array('~', '&s;'), $value);
}
private function setFilterUrl(&$params, &$url) {
$filter = [];
if (!empty($params['filters'])) {
foreach ($params['filters'] as $key => $values) {
switch($key) {
case 'prices':
$filter[] = $key .'='. implode(':', $values);
break;
default:
foreach($values as &$value) {
$value = $this->option_value_encode($value);
if (empty($value)) {
unset($value);
}
}
$filter[] = $key .'='. implode(',', $values);
break;
}
}
if (!empty($filter)) {
$url .= 'filters:'. implode(';', $filter);
}
unset($params['filters']);
}
}
private function parseFilter($paths, &$params) {
$params['filters'] = [];
$filter_str = substr($paths, 8);
$filter_options = explode(';', $filter_str);
foreach ($filter_options as $filter_option) {
if (empty($filter_option)) {
continue;
}
list($filter_key, $filter_option) = explode('=', $filter_option);
if($filter_key == 'prices') { // price-interval section
$prices = explode(':', $filter_option);
$params['filters'][$filter_key] = [
'min' => floatval($prices[0]),
'max' => floatval($prices[1]),
];
}
else { // brands and other sections
$params['filters'][$filter_key] = explode(',', $filter_option);
}
}
}
}