hasMany相关模型数据更新/修改中的问题 [英] Issue in hasMany associated model data update/modify

问题描述

 我有两个表，
类别有很多产品
 id 
名称
有效
 
产品属于类别
 id 
名称
 category_id 
有效
  

在编辑类别时，同时，我还将显示与该类别相关的产品，以便我可以更新/修改与该类别相关的产品。

以下是保存代码：-

  $ categoryProducts = $ this-> Categories-> get（1，[
'contain'=>'Products'
]）; 
 
 if（$ this-> request-> is ['post'，'put']）{
 $ entity = $ this-> Categories-> patchEntity（$ categoryProducts，$ this->请求->数据）； 
 
 
this->类别-> save（$ entity）; 
 
} 
  

解决方案

当您设置hasMany关系，添加'saveStrategy'=> ‘替换’。有关详细信息，请参见手册的有很多部分。

I have two table,
categories     hasMany products
id
name
active

products       belongsTo categories
id
name
category_id
active

When I am editing the categories, in the same time I am also displaying the Products related to the category so that I can update/modify products related to the category.

Issue:- When I add more products for the category that works fine but when I remove some products from the category,the removed product does not get deleted from the database. So I want to know that This functionality is supported by CakePHP or not. If yes please help me to find where I am going wrong.

Here is the save code:-

$categoryProducts = $this->Categories->get(1, [
   'contain' => 'Products' 
]);

    if($this->request->is['post', 'put']){
       $entity = $this->Categories->patchEntity($categoryProducts, $this->request->data);


      $this->Categories->save($entity);

}

解决方案

When you set up your hasMany relationship, add 'saveStrategy' => 'replace'. See the hasMany section of the manual for details.

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