CakePHP: SaveAll()和hasMany数据替换问题

Question

我做了一个有很多关联的大表格hasMany/HABTM。一切都在创造(!)。当更新所有工作也很好，但在关联是hasMany的表中，数据不会更新或替换，而只是插入。这将带来许多带有垃圾数据的行。我如何使saveAll()做更新/替换在hasMany字段:

模型:

class MainModel extends AppModel {
  var $hasAndBelongsToMany = array(
    'HABTMModel1',
    ...
    'HABTMModeln',
  );
  var $hasMany = array(
    'Model1' => array(
      'dependent' => true
     ),
     ...
    'Modeln' => array(
      'dependent' => true
    ),
  );
}

问题之一是许多模型看起来像:

class Model1 extends AppModel {
  var $belongsTo = array(
    'MainModel'
  );
}

和他的表有:

id <- Primary key, auto increment, int (11)
main_model_id <- Foreign_key int (11)
name <- text field, string

$this->数据如下:

array(
  [MainModel] => array(
    'id' => 123
    *** aditional data named identicaly to table fields (working great)***
  ),
  [Model1] => array(
    [0] => array(
      [name] => Test1
    ),
    [2] => array(
      [name] => Test2
    ),
  ),
  *** all other models ***
);

第一次创建和更新后的Model1表结果:

id        main_model_id        name
--------------------------------------------------------------
11        306                 Test1
12        306                 Test2
13        306                 Test1  (Thease are dublicates)
14        306                 Test2  (Thease are dublicates)

我能做些什么来更新/替换hasMany中的数据，而不是使用saveAll在编辑中插入新值?

谢谢。

Answer 1

在视图中，只需为所有Model1、Model2 id添加隐藏输入

echo $form->create('MainModel');
echo $form->hidden('Model1.0.id');
// more stuffs...
echo $form->end('Save');

您可能指定Model1, Model2的'fields'只有'name'。这就是$this->data看起来像这样的原因。所以只要加上" id "

Answer 2

所以我做得不那么漂亮，但很好用:

// If edit, then delete data from hasMany tables based on main_model_id
if(isset($this->data['MainModel']['id']) && !empty($this->data['MainModel']['id'])) {
  $conditions = array('main_model_id' => $this->data['MainModel']['id']);
  // Delete Model1
  $this->MainModel->Model1->deleteAll($conditions, false);
  ...
  all other models
  ...
}
$this->MainModel->saveAll($this->data);

Answer 3

您需要为您的hasMany模型设置id字段，例如

array(  
 [MainModel] => array(
    [id] => 123
    *** aditional data named identicaly to table fields (working great)***   ), 
  [Model1] => array(
    [0] => array(
      [id] => 1,
      [name] => Test1
    ),
    [2] => array(
      [id] => 2
      [name] => Test2
    ),   ),   *** all other models *** );