Ip\Internal\Grid\Model\Field\RepositoryFile::searchQuery PHP Method

    public function searchQuery($searchVariables)
    {
        if (isset($searchVariables[$this->field]) && $searchVariables[$this->field] !== '') {
            return '`' . $this->field . '` like ' . ipDb()->getConnection()->quote('%' . $searchVariables[$this->field] . '%') . ' ';
        }
        return null;
    }