Question

如何使用以下条件在cakePHP中构建find（）查询：

Find where 
MyModel.x = 1 and MyModel.y = 2 OR 
MyModel.x = 1 and MyModel.y value does not exist (or is equal to empty string)

有人可以告诉我如何构建这样的查询查询吗？

Answer 1

我会给你一些指示，但你需要尝试这样做，因为它非常基本，而且练习总是好的。

蛋糕中的基本发现是

$this->ModelName->find('all');

这是默认形式的SELECT * from model_names（约定是多个表名的单数ModelName - model_names）

添加条件：

$this->ModelName->find('all', array('conditions' => array('ModelName.x' => 1));

添加AND条件

$this->ModelName->find('all', array('conditions' => array(
   'ModelName.x' => 1, 'ModelName.y' => 2
));

添加OR条件

$this->ModelName->find('all', array('conditions' => array(
   'OR' => array(
      'ModelName.x' => 1, 'ModelName.y' => 2
    )
));

将两者结合起来

$this->ModelName->find('all', array('conditions' => array(
   'ModelName.y is not' => null,
   'OR' => array(
      'ModelName.x' => 1, 'ModelName.y' => 2
    )
));

// where y is not null and (x = 1 or y = 2)

http://book.cakephp.org/1.3/view/1030/Complex-Find-Conditions

（顺便说一下，我确信会有用户给你准确的答案，所以请把我的答案作为参考:)）

Answer 2

$this->MyModel->find('all', array('conditions' => array(
    'OR' => array(
         array(
             'MyModel.x' => 1,
             'MyModel.y' => 1
         ),
         array(
             'MyModle.x' => 1,
             'OR' => array(
                  array('MyModel.y' => NULL),
                  array('MyModel.y' => '')
             )
         )
    )
)));

cakePHP复杂查找查询

2 个答案: