typo3 - How to omit empty (optional) segment in realurl? -

currently i'm trying create nice looking url's custom extension.

i using plugin on page "products" (uid: 3) list categories.

for example there following categories:

• men
  • shirts
  • sweatshirts
• women
  • shoes
  • dresses

i'd have these corresponding url's:

www.mydomain.com/products/men.html

www.mydomain.com/products/men/shirts.html

this is, get:

www.mydomain.com/products//men.html

www.mydomain.com/products/men/shirts.html

the category "men" on first level not have parent category, segment remains empty. there parent category, fine.

typo3 version: 7.6.15

realurl version: 2.1.6

this current configuration fixedpostvars:

'fixedpostvars' => array (  // ext: productsdb start            'productsdbconfiguration' => array(     array(         'getvar' => 'tx_productsdb_categories[action]',         'valuemap' => array(         ),         'nomatch' => 'bypass'     ),     array(         'getvar' => 'tx_productsdb_categories[controller]',         'valuemap' => array(         ),         'nomatch' => 'bypass'     ),     array(         'getvar' => 'tx_productsdb_categories[parent]',         'lookuptable' => array(             'table' => 'tx_productsdb_domain_model_category',             'id_field' => 'uid',             'alias_field' => 'title',             'addwhereclause' => ' , not deleted',             'useuniquecache' => 1,             'useuniquecache_conf' => array(                 'strtolower' => 1,                 'spacecharacter' => '-'             ),             'languagegetvar' => 'l',             'languageexceptionuids' => '',             'languagefield' => 'sys_language_uid',             'transorigpointerfield' => 'l10n_parent',             //'autoupdate' => 1,             //'expiredays' => 180,         ),        // 'valuedefault' => '',     ),     array(         'getvar' => 'tx_productsdb_categories[category]',         'lookuptable' => array(             'table' => 'tx_productsdb_domain_model_category',             'id_field' => 'uid',             'alias_field' => 'title',             'addwhereclause' => ' , not deleted',             'useuniquecache' => 1,             'useuniquecache_conf' => array(                 'strtolower' => 1,                 'spacecharacter' => '-'             ),             'languagegetvar' => 'l',             'languageexceptionuids' => '',             'languagefield' => 'sys_language_uid',             'transorigpointerfield' => 'l10n_parent',             //'autoupdate' => 1,             //'expiredays' => 180,         )     ), ), '3' => 'productsdbconfiguration', // ext: productsdb end 

),

so, here question: there way , need do, skip optional path segment, if empty?

thanks in advance having @ it.

here's code used realurl encodespurl_postproc hook:

public function encodeurl(&$params) {     $originalparameters = $params['pobj']->getoriginalurlparameters();      if(array_key_exists('tx_productsdb_categories[category]', $originalparameters)===true) {         if (strpos($params['url'], '//')) {             $encodedsegments = explode('/', $params['url']);             $modifiedsegments = array_filter($encodedsegments, 'strlen');             $params['url'] = implode('/', $modifiedsegments);         }     } } 

let me know, if got other ideas improvement.