Formal\Form::postValue PHP Method

    function postValue($sPropName)
    {
        $aData = \Flake\Util\Tools::POST("data");
        if (is_array($aData) && array_key_exists($sPropName, $aData)) {
            return $aData[$sPropName];
        }
        return "";
    }

 function morphologyHook(\Formal\Form $oForm, \Formal\Form\Morphology $oMorpho)
 {
     if ($oForm->submitted()) {
         $bMySQL = intval($oForm->postValue("PROJECT_DB_MYSQL")) === 1;
     } else {
         $bMySQL = PROJECT_DB_MYSQL;
     }
     if ($bMySQL === true) {
         $oMorpho->remove("PROJECT_SQLITE_FILE");
     } else {
         $oMorpho->remove("PROJECT_DB_MYSQL_HOST");
         $oMorpho->remove("PROJECT_DB_MYSQL_DBNAME");
         $oMorpho->remove("PROJECT_DB_MYSQL_USERNAME");
         $oMorpho->remove("PROJECT_DB_MYSQL_PASSWORD");
     }
 }