自定義內使用中可容納查找

Question

我使用CakePHP 2.3.x版本

我有以下的hasMany關係的模型：

class Product extends AppModel { 
    public $name = 'Product'; 
    public $actsAs = array('Containable'); 
    public $findMethods = array('instockinactive' => true); 
    public $hasMany = array(
     'Listing' => array(
       'className'  => 'Listing', 
       'foreignKey' => 'product_id', 
       'dependent'  => false, 
       'order'   => 'Listing.market ASC' 
     ) 

數據庫看起來像下面這樣。我想選擇'Listing.listingstatus'='Inactive'的所有'產品'。我想我應該可以用Contain做到這一點。

array(
    (int) 0 => array(
      'Product' => array(
      'id' => '15', 
      'skutype' => 'Standard', 
      'sku' => 'dba:43253R', 
      'mpn' => '43253R', 
      'brand' => 'Hamilton Beach', 
      'upc' => '040094916559', 
      'isbn' => '', 
      'ean' => '', 
      'gtin' => '', 
      'jan' => '', 
      'stock' => 'Yes', 
      'condition' => 'New', 
      'created' => '1406243817', 
      'modified' => '1406243817' 
     ), 
     'Listing' => array(
      (int) 0 => array(
       'id' => '32', 
       'product_id' => '15', 
       'market_id' => '1', 
       'sku' => 'dba:43253R', 
       'market' => 'jskdistributing', 
       'listingstatus' => 'Active', 
       'itemid' => '191260995302', 
       'created' => '2014-07-24 19:24:50', 
       'modified' => '2014-07-24 19:24:50' 
      ) 
     ) 
    ), 
    (int) 1 => array(
     'Product' => array(
      'id' => '229', 
      'skutype' => 'Standard', 
      'sku' => 'dba:48465', 
      'mpn' => '48465', 
      'brand' => 'Hamilton Beach', 
      'upc' => '040094484652', 
      'isbn' => '', 
      'ean' => '', 
      'gtin' => '', 
      'jan' => '', 
      'stock' => 'Yes', 
      'condition' => 'New', 
      'created' => '1407615778', 
      'modified' => '1407615778' 
     ), 
     'Listing' => array(
      (int) 0 => array(
       'id' => '238', 
       'product_id' => '229', 
       'market_id' => '1', 
       'sku' => 'dba:48465', 
       'market' => 'jskdistributing', 
       'listingstatus' => 'Inactive', 
       'itemid' => '191280736083', 
       'created' => '2014-08-09 16:33:55', 
       'modified' => '2014-08-09 16:33:55' 
      ) 
     ) 
    ) 

定製發現如下：

protected function _findInstockinactive ($state, $query, $results = array()) { 
     if ($state === 'before') { 
      $query['order'] = array('Product.sku' => 'asc'); 
      $query['conditions'] = array('Product.stock' => 'Yes');    
      $query['contain'] = array('Listing' => array(
       'conditions' => array('Listing.listingstatus =' => 'Inactive') 
      ); 
      return $query; 
     }   
     return $results; 
    } 

這一發現的結果是，它會選擇每個產品記錄，並和每一個清單記錄。清單沒有顯示如下所示的內容。

array(  
    (int) 0 => array(
     'Product' => array(
      'id' => '15', 
      'skutype' => 'Standard', 
      'sku' => 'dba:43253R', 
      'mpn' => '43253R', 
      'brand' => 'Hamilton Beach', 
      'upc' => '040094916559', 
      'isbn' => '', 
      'ean' => '', 
      'gtin' => '', 
      'jan' => '', 
      'stock' => 'Yes', 
      'condition' => 'New', 
      'created' => '1406243817', 
      'modified' => '1406243817' 
     ), 
     'Listing' => array() 
     ) 
    ), 
    (int) 1 => array(
     'Product' => array(
      'id' => '229', 
      'skutype' => 'Standard', 
      'sku' => 'dba:48465', 
      'mpn' => '48465', 
      'brand' => 'Hamilton Beach', 
      'upc' => '040094484652', 
      'isbn' => '', 
      'ean' => '', 
      'gtin' => '', 
      'jan' => '', 
      'stock' => 'Yes', 
      'condition' => 'New', 
      'created' => '1407615778', 
      'modified' => '1407615778' 
     ), 
     'Listing' => array() 
     ) 
    ) 

Answer 1

默認情況下，可包含行爲和模型關聯使用「LEFT」連接。 如果您想對相關模型的條件/秒，以減少返回的行主型號，您可以：

1）定義的關係如下：

public $hasMany = array(
    'Listing' => array(
      'className'  => 'Listing', 
      'foreignKey' => 'product_id', 
      'dependent'  => false, 
      'order'   => 'Listing.market ASC' 
      'type'   => 'INNER' 
    ) 

這顯然適用於所有找到（）爲產品模型。

2）適用條件，您的自定義查找：

 $query['order'] = array('Product.sku' => 'asc'); 
     $query['conditions'] = array(
      'Product.stock' => 'Yes', 
      'Listing.listingstatus =' => 'Inactive' 
     ); 
     $query['contain'] = array('Listing'); 
     return $query; 

3）使用自定義查找 '加入'，而不是 '遏制'：

 $query['order'] = array('Product.sku' => 'asc'); 
     $query['conditions'] = array(
      'Product.stock' => 'Yes', 
      'Listing.listingstatus =' => 'Inactive' 
     ); 
     $query['join'] = array(
      'table' => 'listings', 
      'alias' => 'ListingJoin', 
      'type' => 'INNER', 
     ); 
     return $query; 

只生成一個查詢有更好的表現。