protected function insertContent(Content $content, $comment = null)
    {
        $tablename = $this->getContenttypeTablename($content->contenttype);

        // Set creation and update dates
        $content->setValue('datecreated', date('Y-m-d H:i:s'));
        $content->setValue('datechanged', date('Y-m-d H:i:s'));

        // id is set to autoincrement, so let the DB handle it
        unset($content->values['id']);

        // Get the JSON database prepared values and make sure it's valid
        $fieldvalues = $this->getValidSaveData($content->getValues(true), $content->contenttype);

        $this->app['db']->insert($tablename, $fieldvalues);

        $seq = null;
        if ($this->app['db']->getDatabasePlatform() instanceof PostgreSqlPlatform) {
            $seq = $tablename . '_id_seq';
        }

        $id = $this->app['db']->lastInsertId($seq);

        if ($id > 0) {
            $content->setValue('id', $id);
            $this->logInsert($content->contenttype['slug'], $id, $fieldvalues, $comment);

            return true;
        }
    }