LeadDataProvider::prepareListFilterParam

public function prepareListFilterParam(array &$filter, $fieldID)
{
	if($fieldID === 'TITLE'
		|| $fieldID === 'NAME'
		|| $fieldID === 'LAST_NAME'
		|| $fieldID ===  'SECOND_NAME'
		|| $fieldID ===  'POST'
		|| $fieldID ===  'COMMENTS'
		|| $fieldID === 'COMPANY_TITLE'
	)
	{
		$value = isset($filter[$fieldID]) ? trim($filter[$fieldID]) : '';
		if($value !== '')
		{
			$filter["?{$fieldID}"] = $value;
		}
		unset($filter[$fieldID]);
	}
}