Cakephp 可控制的韩元'；带HABTM&；有许多

我所拥有的：

"A" HABTM "C" HABTM "A" through join table "B"
"A" hasMany "B" belongsTo "A"
"C" is ordered by a "B" field

// result:
[0] => array( 
    A => array( /* single model's fields I still need*/ ),
    C => array(
        [0] => array( C.field1, C.field2, ... /* Model C fields*/ ), 
        [1] => array( C.field1, C.field2, ... )
    )
) 

我想要什么：

"A" HABTM "C" HABTM "A" through join table "B"
"A" hasMany "B" belongsTo "A"
"C" is ordered by a "B" field

// result:
[0] => array( 
    A => array( /* single model's fields I still need*/ ),
    C => array(
        [0] => array( C.field1, C.field2, ... /* Model C fields*/ ), 
        [1] => array( C.field1, C.field2, ... )
    )
) 

我所尝试的：

// this gives me data I don't need:
A->find('all', array( 'conditions' => array( 'id' => $id ) ) )
// result:
[0] => array( 
    A => array( /* single model's fields I need*/ ),
    B => array( /* I DON'T NEED */
        [0] => array( ... )
        [1] => array( /* ... etc, tons records I don't need */ )
    ),
    C => array(
        [0] => array( C.field1, C.field2, ... /* I need these fields*/ 
            [B] => array( /* I DON'T NEED */ )
        ),
        [1] => array( C.field1, C.field2, ...  )
            [B] => array( /* ... etc, each has a model B I don't need ... */)
        )
    )
)

使用Containable，我可以大大减少查询，但仍然存在相关的模型问题：

// this is a little better
A->find('all', array( 
    'conditions' => array( 'id' => $id ),
    'contain' => array( 'C' )
))
// result:
[0] => array( 
    A => array( /* single model's fields I still need*/ ),
    C => array(
        [0] => array( C.field1, C.field2, ... /* I still need Model C fields*/ 
            [B] => array( /* I still DON'T need this Model's fields */ )
        ),
        [1] => array( C.field1, C.field2, ... 
            [B] => array( /* ... still has unneeded model B */)
        )
    )
)

NB1：我读过，从书中，以及

NB2：我也试过了

C->recursive = -1 // no effect

C->unbindModel(array('hasAndBelongsToMany'=>A)) // no effect

A->find('all', array(                    // not what I want, but it's still 
    'conditions' => array('id' => $id),  // odd that this doesn't filter C's 
    'contain' => array('A.B')));         // fields out. same as second result

A->find('all', array(                    // also not what I want, but it's 
    'conditions' => array('id' => $id),  // weird that this doesn't filter B's 
    'contain' => array('A.B.field')));   // fields at all; 

---

ContaineableBehavior将自动返回映射结果所需的字段

引用您已经阅读过的一篇文章：

$this->Post->find('all', array('contain' => 'Comment.author'));

... // data returned:

[Comment] => Array
    (
        [0] => Array
            (
                [author] => Daniel
                [post_id] => 1
            )
...

如您所见，注释数组 仅包含作者字段（加上 CakePHP需要的post_id 以映射结果）

---

在HABTM关系的情况下，返回带有相关外键的联接模型，因为Containable需要

a_id

和

c_id

字段。我的建议是忽略它，接受你需要的价值观。如果您愿意，您可以查看一下，因为Containable有时会多次查询数据库。但是，关联模型的数据不会像可包含的那样返回。

对于那些寻求相同内容的人，我最终用$A=$data['A']格式化数组$B=Set:：classicExtract（$data，'B.{n}.{field1 | field2 | field3 | field4}'）$数据=数组（'A'=>A$B'=>B$B）；