更新查询对象的解析ACL

Question

In my iOS app I am making a PFObject and saving it to Parse. Later, a user's account is created (which didn't exist before), and tries to modify it but can't because the PFObjects's ACL wasn't set to allow that user to have permission. How can I modify the ACL of an existing object in Parse to allow this user to have access? I do not want to allow public write access.

The following code prints Success! if given the right code query parameter, but when I check the ACL in Parse it has not been updated at all.

let query = PFQuery(className: "Bike")
query.whereKey("bikeID", equalTo: code)
query.findObjectsInBackground { (objects: [PFObject]?, error: Error?) in
    guard let obj = objects?[0], error == nil else {
        print("Error")
        return
    }
    obj.acl?.setWriteAccess(true, for: PFUser.current()!)
    obj.saveInBackground { (success: Bool, error: Error?) in
        if error != nil {
            print(error!.localizedDescription)
        }
        else {
            print("Success!")
        }
    }
}

This post seems to suggest that the ACL cannot be changed through my app's Swift code.

Answer 1

如果知道要授予访问权限的对象，则可以在User类的CloudCode afterSave挂钩中更改其ACL：在afterSave ，测试是否已创建用户（以避免为以后的保存请求重做此工作） ，然后查找对象并使用主密钥设置访问权限。