CakePHP 3 DeleteAll其中前4个字母不是http

Question

如何使用cakephp 3创建此SQL语句;

 delete FROM bookmarks WHERE substring(url , 4) != 'http'

我试过了;

$this->Bookmark->deleteAll('substring(Bookmark.url,4) !=' => 'http',false);   

Cakephp不喜欢Substring或LEFT（）函数

Answer 1

这个怎么样：

$this->Bookmark->deleteAll([
    'NOT' => ['SUBSTRING(url, 1, 4)' => 'http'],
]);