object - 更改 cakephp 3 中的对象属性值

Question

我的索引操作就像

public function index() {
    $acos = $this->Acos->find('threaded');
    foreach ($acos as $aco) {
        $aco->children = doSomeOperations($aco->children);
    }
}

我想用新值替换 $acos->$aco->children 值，但我不能这样做

Answer 1

您只需要使用引用运算符

public function index() {
    $acos = $this->Acos->find('threaded');
    foreach ($acos as &$aco) {
        $aco->children = doSomeOperations($aco->children);
    }
}

另一种方法是在结果集中使用集合方法:

$acos = $this->Acos->find('threaded')
    ->map(function ($aco) {
        $aco->children = doSomeOperations($aco->children);
        return $aco;
    });