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<?php
namespace Kanboard\Model;
use Kanboard\Core\Base;
/**
* Class TaskTagModel
*
* @package Kanboard\Model
* @author Frederic Guillot
*/
class TaskTagModel extends Base
{
/**
* SQL table name
*
* @var string
*/
const TABLE = 'task_has_tags';
/**
* Get all tags associated to a task
*
* @access public
* @param integer $task_id
* @return array
*/
public function getAll($task_id)
{
return $this->db->table(TagModel::TABLE)
->columns(TagModel::TABLE.'.id', TagModel::TABLE.'.name')
->eq(self::TABLE.'.task_id', $task_id)
->join(self::TABLE, 'tag_id', 'id')
->findAll();
}
/**
* Get dictionary of tags
*
* @access public
* @param integer $task_id
* @return array
*/
public function getList($task_id)
{
$tags = $this->getAll($task_id);
return array_column($tags, 'name', 'id');
}
/**
* Add or update a list of tags to a task
*
* @access public
* @param integer $project_id
* @param integer $task_id
* @param string[] $tags
* @return boolean
*/
public function save($project_id, $task_id, array $tags)
{
$task_tags = $this->getList($task_id);
return $this->addTags($project_id, $task_id, $task_tags, $tags) &&
$this->removeTags($task_id, $task_tags, $tags);
}
/**
* Associate a tag to a task
*
* @access public
* @param integer $task_id
* @param integer $tag_id
* @return boolean
*/
public function associate($task_id, $tag_id)
{
return $this->db->table(self::TABLE)->insert(array(
'task_id' => $task_id,
'tag_id' => $tag_id,
));
}
/**
* Dissociate a tag from a task
*
* @access public
* @param integer $task_id
* @param integer $tag_id
* @return boolean
*/
public function dissociate($task_id, $tag_id)
{
return $this->db->table(self::TABLE)
->eq('task_id', $task_id)
->eq('tag_id', $tag_id)
->remove();
}
private function addTags($project_id, $task_id, $task_tags, $tags)
{
foreach ($tags as $tag) {
$tag_id = $this->tagModel->findOrCreateTag($project_id, $tag);
if (! isset($task_tags[$tag_id]) && ! $this->associate($task_id, $tag_id)) {
return false;
}
}
return true;
}
private function removeTags($task_id, $task_tags, $tags)
{
foreach ($task_tags as $tag_id => $tag) {
if (! in_array($tag, $tags)) {
if (! $this->dissociate($task_id, $tag_id)) {
return false;
}
}
}
return true;
}
}
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