Cakephp-HABTM记录不会被删除且唯一性设置为true [英] Cakephp - HABTM record won't delete with unique set to true

问题描述

CakePHP的默认值unique设置为true，我对此进行了编码以确保同样。
因此，我具有以下数据库结构：
项目HABTM操作，其唯一性设置为true。

CakePHP has the default of unique set to true, I've coded it just to make sure as well. So I have the following DB structure: Item HABTM Action, with unique set to true.

情况如下：

如果ATLEAST 1记录保持活动状态，则删除1条或多条记录时，删除后可以正常工作

Deletion works fine upon save when I delete 1 or more records, if ATLEAST 1 record stays 'alive'

当我删除所有记录（或1条记录，如果那是唯一一条）时，在保存时将无法工作。

Deletion doesn't work upon save when I delete all records ( or 1 record, if that's the only one). It simply keeps all existing records that way.

我已经确保在不包含任何动作的情况下使用debug（$ this-> request-> data）进行调试。 。

I've made sure with debug($this->request->data) right before save that it contained Nothing of Action.

推荐答案

从您对帖子的评论中的讨论中，我仍然感到困惑，但据我了解，您正在尝试至：
以类似以下格式保存POST：
array（
'Item'=> array（
'id'=>'3'
）
使用：

From the discussion in the comments on your post I am still confused, but what I understand is that you're trying to: Save a POST in a format similar to this: array( 'Item' => array( 'id' => '3' ) With:

 $this->Item->SaveAll($this->request->data);

您的POST应包含操作键：

Your POST should contain a 'Action' key:

array(
    'Item' => array(
        'id' => '3'
    ),
    'Action' => array(
        'Action' => array()
    )

设置了动作键后，Cake知道它必须移过该关系并且是魔术。
然后它将删除。

When the "Action" key is set, Cake knows that it has to go "over" the relation and to it's magic. Then it will delete.

我刚刚测试过在我正在开发的应用中发现实际上是一个错误。 ：D问题
是，对于特定的HATBM关系，我必须使用手动生成的表单，因此在不包含任何内容的发布中，未设置关系键，并且未删除记录。我想表单助手可以解决这个问题。

I just tested this on a App that I'm developing and actually found it to be a bug. :D The problem was that for the specific HATBM relation I had to use manually generated forms and thus when posting with nothing included the relation key was not set and the records, weren't deleted. I suppose that the Form Helper deals with this.

如果您遇到类似的问题，可以用两种不同的方式来管理它：

If you have a similar problem you can manage this in two different manners:

1. 使用JavaScript放置隐藏的输入

1. Put a hidden input with JavaScript

在Controller中，检查 Action键是否为设置，如果没有添加（作为一个空数组）：

In the Controller check if the 'Action' key is set, and if not add it (as an empty array):

$ this-> request-> data ['Action'] ['Action'] = array（ ）;

$this->request->data['Action']['Action'] = array();

这可能是一种侵入性，但可以完成工作。

This may be kind of intrusive, but It'll do the job.

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