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<?php
namespace Kanboard\Filter;
use Kanboard\Core\Filter\FilterInterface;
use Kanboard\Model\Link;
use Kanboard\Model\Task;
use Kanboard\Model\TaskLink;
use PicoDb\Database;
use PicoDb\Table;
/**
* Filter tasks by link name
*
* @package filter
* @author Frederic Guillot
*/
class TaskLinkFilter extends BaseFilter implements FilterInterface
{
/**
* Database object
*
* @access private
* @var Database
*/
private $db;
/**
* Set database object
*
* @access public
* @param Database $db
* @return TaskLinkFilter
*/
public function setDatabase(Database $db)
{
$this->db = $db;
return $this;
}
/**
* Get search attribute
*
* @access public
* @return string[]
*/
public function getAttributes()
{
return array('link');
}
/**
* Apply filter
*
* @access public
* @return string
*/
public function apply()
{
$task_ids = $this->getSubQuery()->findAllByColumn('task_id');
if (! empty($task_ids)) {
$this->query->in(Task::TABLE.'.id', $task_ids);
} else {
$this->query->eq(Task::TABLE.'.id', 0); // No match
}
}
/**
* Get subquery
*
* @access protected
* @return Table
*/
protected function getSubQuery()
{
return $this->db->table(TaskLink::TABLE)
->columns(
TaskLink::TABLE.'.task_id',
Link::TABLE.'.label'
)
->join(Link::TABLE, 'id', 'link_id', TaskLink::TABLE)
->ilike(Link::TABLE.'.label', $this->value);
}
}
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