使用 CakePHP 以相同形式 Update/Add/Delete 多条记录的最佳方法是什么

Question

我有这个主题 table，它链接到 table Post，模型中有许多。

这是我的 $this->request->data

Array
(
[Topic] => Array
    (
        [id] => 1
        [topic_title] => This is my topic
    )

[Post] => Array
    (
        [1] => Array
            (
                [id] => 1
                [title] => Blah
                [message] => My message
            )

        [2] => Array
            (
                [id] => 2
                [title] => Second Blah
                [message] => Second My message
            )

    )

)

我用 :

更新它

$this->Topic->saveAssociated($this->request->data);

但是，如果我还想能够添加和删除该主题的帖子，我该怎么办？

Answer 1

来自 CakePHP 2 书

delete(integer $id = null, boolean $cascade = true);

Deletes the record identified by $id. By default, also deletes records dependent on the record specified to be deleted.

For example, when deleting a User record that is tied to many Recipe records (User ‘hasMany’ or ‘hasAndBelongsToMany’ Recipes):

• if $cascade is set to true, the related Recipe records are also deleted if the model’s dependent-value is set to true.
• if $cascade is set to false, the Recipe records will remain after the User has been deleted.

http://book.cakephp.org/2.0/en/models/deleting-data.html

Answer 2

保持相同的结构，您可以执行 $this->Topic->saveAssociated($this->request->data);，它会在数据数组中添加任何新的（'id' => NULL 或未设置的）项目。

关于删除，我知道唯一会同时删除的情况是标记为 'unique' => true 的 HABTM。否则，您需要执行 $this->Post->deleteAll(array('Post.topic_id' => $unwanted_topic_id), false);

我可以考虑制作一个新数组来保留您要删除的数组并将它们作为 deleteAll 函数的条件发送。