Question

我有3个表，categories，products和seller_products，他们的关联就像的 CategoriesTable.php

$this->hasMany('Products', [
   'foreignKey' => 'category_id'
]);

ProductsTable.php

$this->hasMany('SellerProducts', [
    'foreignKey' => 'product_id'
]);

$this->belongsTo('Categories', [
    'foreignKey' => 'category_id',
    'joinType' => 'INNER'
]);

SellerProductsTable.php

$this->belongsTo('Products', [
    'foreignKey' => 'product_id',
    'joinType' => 'INNER'
]);

现在，在view categories（site.com/categories/view/2）的products中，我必须从sellerProducts和products.category_id = $id AND sellerProducts.product_id = Products.id中选择产品所属的所有产品数据id也存在于sellerProducts中。即，

view()

CakePHP 3中有没有简单的方法来获得结果？

编辑2

这就是我正在尝试的。在CategoriesController.php

的

$this->loadModel('Products');
        $sellerProducts = $this->Products->find('all', [
          'conditions' => [
            'category_id' => $id
          ],
          'joins' => [
              'table' => 'SellerProducts',
              'alias' => 'SellerProducts',
              'type' => 'INNER',
              'conditions' => [
                'SellerProducts.product_id' => 'Products.id',
                'stock >' => 0
              ]
            ]
        ]);
        debug($sellerProducts);
        foreach($sellerProducts as $a) {
          debug($a);
        }

行动中

debug

在Products上，它仅提供来自SellerProducts表的数据，但不提供来自Login 11:30, Login 11:30, Logout 11:30, Login 11:30, Logout 09:30, Login 09:30的数据

Answer 1

代替加入，您只需包含SellerProducts

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                1
On-line CPU(s) list:   0
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 62
Model name:            Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Stepping:              4
CPU MHz:               2500.046
BogoMIPS:              5000.09
Hypervisor vendor:     Xen
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              25600K
NUMA node0 CPU(s):     0

RAM = 2 GB

如果您想查询来自卖方产品的数据，您可以

$this->Products->find()
    ->where(['category_id' => $id])
    ->contain(['SellerProducts' => function($q) {
        return $q->where(['stock >' => 0])
    }]);

CakePHP 3：多级关联

1 个答案: