/**
* Returns a nested tree representation of `'embed'` option.
*
* @return array The corresponding nested tree representation.
*/
public function treeify($embed)
{
if (!$embed) {
return [];
}
if ($embed === true) {
$embed = $this->relations();
}
$embed = Set::expand(array_fill_keys(array_keys(Set::normalize((array) $embed)), null));
$result = [];
foreach ($embed as $relName => $value) {
if (!isset($this->_relations[$relName])) {
continue;
}
if ($this->_relations[$relName]['relation'] === 'hasManyThrough') {
$rel = $this->relation($relName);
$result[$rel->through()] = [$rel->using() => $value];
}
$result[$relName] = $value;
}
return $result;
}
/**
* Sets the relations to retrieve.
*
* @param array $embed The relations to load with the query.
* @return object Returns `$this`.
*/
public function embed($embed = null, $conditions = [])
{
if (!$embed) {
return $this->_embed;
}
if (!is_array($embed)) {
$embed = [$embed => $conditions];
}
$embed = Set::normalize($embed);
$this->_embed = Set::merge($this->_embed, $embed);
return $this;
}
