CakePHP HABTM关系保存新关联



我在为正在使用的某些代码保存HABTM关系时遇到了一些问题。我有处于HABTM关系中的PodcastsCategories。下方的代码和问题说明

Model/Podcast.php

class Podcast extends AppModel{
    public $hasMany = 'Episode';
    public $hasAndBelongsToMany = array(
        'Category' =>
            array(
                'className' => 'Category',
                'joinTable' => 'categories_podcasts',
                'foreignKey' => 'podcast_id',
                'associationForeignKey' => 'category_id',
                'unique' => false
            )
        );
}

型号/类别.php

class Category extends AppModel{
    public $hasAndBelongsToMany = array(
        'Podcast' =>
            array(
                'className' => 'Podcast',
                'joinTable' => 'categories_podcasts',
                'foreignKey' => 'category_id',
                'associationForeignKey' => 'podcast_id',
                'unique' => false
            )
        );
}

这就是我传递给saveAll()的数组看起来像

Array
(
    [Podcast] => Array
        (
            [name] => Mohr Stories - FakeMustache.com
            [description] => Join your host Jay Mohr and a rotating cast of his hilarious friends as they regale you with tales and conversation covering every topic imaginable. You haven't heard the half of it until you've heard... Mohr Stories.
            [website] => http://www.FakeMustache.com
        )
    [Category] => Array
    (
        [0] => 1
        [1] => 2
    )
)

这很好——添加了播客,更新了联接表,但我觉得我的Category数组可能如下所示:

 [Category] => Array
        (
            [0] => Array
                (
                    [name] => Test
                )
            [1] => Array
                (
                    [name] => Test2
                )
        )

这将保存新类别"Test"one_answers"Test2",然后用它们新添加的id更新联接表。这是不可能的,还是我错过了这里的一些图片?

您确实可以做到这一点,但使用另一种数据格式,其中每条记录都包含相关数据,如以下代码所示,该代码允许保存2条记录:

array{
    array{
        'Podcast' => array {
             'id' => 25
         },
         'Category' => array {
             'name' => 'Test'
         }
    }
    array{
         'Podcast' => array {
             'id' => 25
         },
         'Category' => array {
             'name' => 'Test2'
         }
    }
}

将此数组传递给某个播客/类别模型上的saveAll方法。

$this->Podcast->saveAll($myData);

但请注意,因为您没有为类别提供任何id,所以它们将被创建,即使存在同名的现有类别。

如果id为25的播客不存在,它将被创建

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