CakePHP 可包含和模型关联

Question

我是 CakePHP 的新手，我在here 发了一篇关于我在关系和查找数据方面遇到的问题。事实证明，我的关系似乎还不错，但可以使用可收容物进行搜索。

假设我有 3 个表：reservations、reservation_details 和具有以下数据的房间

table reservations
id  |  confirmation_number   |   guest_id
1         123                        1

table reservation_details -a reservation can have multiple entries (multiple rooms)
id  |  reservation_id   |   date     |  time   | room_id    |   rate
 2           1            2014-18-04    13:00        1           9.99
 3           1            2014-18-04    13:00        2           4.99

table rooms - an entry in reservation_details has one room_id
id  |       Name       |     Location
 1          Room  1          building A      
 2          Room 2           building A  

这是我的模型/协会

 //Reservation model
 public $actsAs = array('Containable');
 public $hasMany = array('ReservationDetail', 'Payment');

 //ReservationDetail model
 public $actsAs = array('Containable');
 public $belongsTo = array('Reservation');
 public $hasMany = array('Room' => array('foreignKey' = 'id'));

 //Room model
 public $actsAs = array('Containable');
 public $belongsTo = array('ReservationDetail' => array('foreignKey' => 'room_id'));

我正在尝试做的是搜索预订并返回reservation_details 和房间信息。现在所有的数据都被返回了，除了房间信息是一个空数组。这是我正在尝试进行的搜索

$reservation = $this->Reservation->find('all', array(
                                          'conditions' => array(
                                             'Reservation.guest_id' => $guest_id
                                           ),
                                           'contain' => array(
                                               'ReservationDetail' => array(
                                                        'Room'
                                                 )
                                             )
                                       ));

我相信 MySQL 查询会是这样的

SELECT reservations.*, reservation_details.*, rooms.* from reservations
INNER JOIN reservation_details on reservation_details.reservation_id = reservation.id
INNER JOIN rooms on rooms.id = reservation_details.room_id
WHERE reservations.guest_id = '1'

Answer 1

模型之间的关系有误。 将它们替换为：

//Reservation model
public $actsAs = array('Containable');
public $hasMany = array('ReservationDetail', 'Payment');

//ReservationDetail model
public $actsAs = array('Containable');
public $belongsTo = array('Reservation', 'Room');

//Room model
public $actsAs = array('Containable');
public $hasMany = array('ReservationDetail');