Question

我在模型中遇到HABTM关系问题。我在这个网站和其他许多网站上搜索了一些示例和参考资料，但却没有成功。有条不紊的帖子HABTM标签官方文档效果很好，但推断到我的模型失败了。找到的所有信息都不包含复合主键的示例或引用（我怀疑由于复合主键，关系不起作用，我不能更改此模式）

我的目标是获得关系：

 Customer HABTM Products.

所以，用

$ customers = $ this-＆gt; Customer-＆gt; find（'all'）;

获取Customer对象中与客户相关的所有产品的数组。

目前我无法解决此问题： $ customer 没有指定的产品数组。

我感谢任何帮助或参考，以帮助我解决这个问题。

这是我的数据库：

CREATE TABLE `customers` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `lang` varchar(2) NOT NULL,
  `name` varchar(145) NOT NULL,
  `logo` varchar(145) NOT NULL,
  `description` text,
  PRIMARY KEY (`id`,`lang`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8

CREATE TABLE `products` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `lang` varchar(2) NOT NULL,
  `category_id` int(11) NOT NULL,
  `service_id` int(11) NOT NULL,
  `description` text,
  `picture` varchar(145) NOT NULL,
  PRIMARY KEY (`id`,`category_id`,`service_id`,`lang`),
  KEY `fk_products_services1` (`service_id`,`lang`),
  KEY `fk_products_categories1` (`category_id`,`lang`),
  CONSTRAINT `fk_products_categories1` FOREIGN KEY (`category_id`, `lang`) REFERENCES `categories` (`id`, `lang`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `fk_products_services1` FOREIGN KEY (`service_id`, `lang`) REFERENCES `services` (`id`, `lang`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=29 DEFAULT CHARSET=utf8


CREATE TABLE `customer_products` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `customer_id` int(11) NOT NULL,
  `product_id` int(11) NOT NULL,
   PRIMARY KEY (`id`,`customer_id`,`product_id`),
   KEY `fk_customer_products_products1` (`product_id`),
   KEY `fk_customer_products_customers` (`customer_id`),
   CONSTRAINT `fk_customer_products_customers` FOREIGN KEY (`customer_id`) REFERENCES `customers` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
   CONSTRAINT `fk_customer_products_products1` FOREIGN KEY (`product_id`) REFERENCES `products` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8

这是我的客户模式：

<?php
App::uses('AppModel', 'Model');
/**
 * Customer Model
 *
 * @property CustomerProduct $CustomerProduct
 * @property Product $AllProducts
 */
class Customer extends AppModel {
/**
 * Display field
 *
 * @var string
 */
    public $displayField = 'name';

    //The Associations below have been created with all possible keys, those that are not needed can be removed


/**
 * hasAndBelongsToMany associations
 *
 * @var array
 */
    public $hasAndBelongsToMany = array(
        'Products' => array(
            'className' => 'Product',
            'joinTable' => 'customer_products',
            'foreignKey' => 'customer_id',
            'associationForeignKey' => 'product_id',
            'unique' => true,
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'finderQuery' => '',
            'deleteQuery' => '',
            'insertQuery' => ''
        )
    );

}

这是我的索引客户控制器方法：

public function index() {
    $this->layout = 'header_chico';
    $this->Customer->recursive = 0;
    $customers = $this->Customer->find('all');
    $this->set('customers', $customers);
}

Answer 1

您的HABTM表应为customers_products（不是customer_products）。这可能会解决它。请记住格式是按字母顺序复数。因此，如果它是客户HABTM产品，那么它就是customers_products。如果是用户HABTM产品，那将是products_users。

<强>更新

如果您希望HABTM记录显示在索引中，您还需要删除：

$this->Customer->recursive = 0;

这将阻止相关记录出现。

CakePHP：HABTM和Recursive属性获取所有相关数据

1 个答案: