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Treepaths
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public static function getTreeByParent($ids) | |
{ | |
$ids = (array) $ids; | |
$ids = implode($ids, ','); | |
// @todo see http://stackoverflow.com/questions/8252323/mysql-closure-table-hierarchical-database-how-to-pull-information-out-in-the-c/8288201#8288201 for visual | |
// the whole tree | |
// http://karwin.blogspot.be/2010/03/rendering-trees-with-closure-tables.html | |
// build query | |
$query = 'SELECT d.id, d.child_of, c.name, d.sequence, | |
CONCAT(REPEAT("-- ", p.length), c.name) as hier, | |
p.length, p.ancestor, p.descendant, | |
GROUP_CONCAT(DISTINCT crumbs.ancestor ORDER BY crumbs.ancestor) AS breadcrumbs | |
FROM shop_categories AS d | |
JOIN shop_categories_treepaths AS p ON d.id = p.descendant | |
JOIN shop_categories_treepaths AS crumbs ON crumbs.descendant = p.descendant | |
LEFT JOIN shop_categories_content as c ON c.category_id = d.id | |
WHERE p.ancestor IN (' . $ids . ') AND c.language = ? | |
GROUP BY d.id | |
ORDER BY breadcrumbs'; | |
// execute the query | |
return BackendModel::get('database')->getRecords($query, array(Language::getWorkingLanguage())); | |
} |
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array(6) { | |
[0] => array(9) { | |
["id"] => string(1) "2" | |
["child_of"] => NULL | |
["name"] => string(8) "Parent B" | |
["sequence"] => string(1) "2" | |
["hier"] => string(8) "Parent B" | |
["length"] => string(1) "0" | |
["ancestor"] => string(1) "2" | |
["descendant"] => string(1) "2" | |
["breadcrumbs"] => string(1) "2" | |
} | |
[1] => array(9) { | |
["id"] => string(1) "5" | |
["child_of"] => string(1) "2" | |
["name"] => string(16) "first child of B" | |
["sequence"] => string(1) "2" | |
["hier"] => string(19) "-- first child of B" | |
["length"] => string(1) "1" | |
["ancestor"] => string(1) "2" | |
["descendant"] => string(1) "5" | |
["breadcrumbs"] => string(3) "2,5" | |
} | |
[2] => array(9) { | |
["id"] => string(1) "6" | |
["child_of"] => string(1) "2" | |
["name"] => string(36) "second child of B but first in order" | |
["sequence"] => string(1) "1" | |
["hier"] => string(39) "-- second child of B but first in order" | |
["length"] => string(1) "1" | |
["ancestor"] => string(1) "2" | |
["descendant"] => string(1) "6" | |
["breadcrumbs"] => string(3) "2,6" | |
} | |
[3] => array(9) { | |
["id"] => string(2) "20" | |
["child_of"] => NULL | |
["name"] => string(8) "Parent A" | |
["sequence"] => string(1) "1" | |
["hier"] => string(8) "Parent A" | |
["length"] => string(1) "0" | |
["ancestor"] => string(2) "20" | |
["descendant"] => string(2) "20" | |
["breadcrumbs"] => string(2) "20" | |
} | |
[4] => array(9) { | |
["id"] => string(1) "3" | |
["child_of"] => string(1) "1" | |
["name"] => string(17) "second child of A" | |
["sequence"] => string(1) "2" | |
["hier"] => string(20) "-- second child of A" | |
["length"] => string(1) "1" | |
["ancestor"] => string(2) "20" | |
["descendant"] => string(1) "3" | |
["breadcrumbs"] => string(4) "3,20" | |
} | |
[5] => array(9) { | |
["id"] => string(1) "4" | |
["child_of"] => string(1) "1" | |
["name"] => string(16) "first child of A" | |
["sequence"] => string(1) "1" | |
["hier"] => string(19) "-- first child of A" | |
["length"] => string(1) "1" | |
["ancestor"] => string(2) "20" | |
["descendant"] => string(1) "4" | |
["breadcrumbs"] => string(4) "4,20" | |
} | |
} |
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