Question

我正在尝试使用每天订购的某个元素的数量制作图表

date       | count
2011-04-22 | 10348
2011-04-23 | 2751

由于我对SQL比较熟悉，我首先就是这样，这就是最终出来的（并且有效）

 SELECT dn.delivery_date, SUM(dnp.count*ep.count) as count
 FROM
 `delivery_notes` AS dn JOIN `delivery_notes_products` AS dnp
    ON dn.id = dnp.delivery_note_id
 JOIN `products` AS p
    ON dnp.product_id = p.id
 JOIN `elements_products` AS ep
    ON p.id = ep.product_id
 JOIN `elements` AS e
    ON ep.element_id = e.id
 WHERE e.id = 4
   AND dn.delivery_date BETWEEN '2011-04-22' AND '2011-05-22'
 GROUP BY dn.delivery_date

现在~~改进我的~~获得一些Cake-find技能，我试图理解如何将其变成find（'list'）或find（'all'）查询，但是我真的不知道我应该如何解决这个......

非常感谢任何帮助。

Answer 1

$this->DeliveryNote->bindModel(array(
    'hasOne'=>array(
        'DeliveryNotesProduct'=>array(
            'conditions'=>array('DeliveryNotesProduct.DeliveryNoteId = DeliveryNote.id')
        ),
        'Product'=>array(
            'conditions'=>array('DeliveryNotesProduct.ProductId = Product.id')
        ),
        'ElementsProduct'=>array(
            'conditions'=>array('ElementsProduct.ProductId  = Product.id')
        ),
        'Element'=>array(
            'conditions'=>array('ElementsProduct.ElementId  = Element.id')
        )

    )
));


$data = $this->DeliveryNote->find('all',array(
    'conditions'=>array(
        'Element.id'=>4,
        'DeliveryNote.DeliveryDate BETWEEN ? AND ?'=>array('2011-04-22','2011-05-22')),
    'fields'=>array('DeliveryNote.DeliveryDate','SUM(DeliveryNotesProduct.Count * ElementsProduct.Count) AS count'),
    'group'=>array('DeliveryNote.DeliveryDate')
));

Cakephp bindModel用于连接表，hasOne是关联类型之一 http://book.cakephp.org/view/1040/Relationship-Types

CakePHP：SQL查询到Cake-＆gt; find（）

1 个答案: