CakePHP Getting Tree Path
In a reversal of yesterday’s post is today’s, getting a path to a node, or nodes. Basically we just use the core getpath() function of the Tree behavior and traverse that path.
function setTreePath(&$data, $path='tree_path', $label='name') {
if (!is_array($data) || !in_array('Tree', $this->actsAs)) {
return $data;
}
if (is_array($data) && is_int(array_shift(array_keys($data)))) {
foreach ($data as $i=>$item) {
$this->_setTreePath($data[$i], $path, $label);
}
} else {
$this->_setTreePath($data, $path, $label);
}
}
function _setTreePath(&$data, $pathField, $label) {
$cats = $this->getpath($data[$this->name][$this->primaryKey]);
$path = array();
foreach ($cats as $cat) {
array_push($path, $cat[$this->name][$label]);
}
$data[$this->name][$pathField] = implode('/', $path);
}
And we can use it simply like in the following test:
function testSetTreePath() {
$result = $this->Category->findById(3);
$this->Category->setTreePath($result, 'tree_id');
$this->assertEqual($result['Category']['tree_id'], 'My Categories/Fun/Sport');
}
It’s mostly useful when working with related models, so the whole path is displayed instead of just the nodes, which may or may not be unique.
