| public calculate ( Model $Model, string $func, array $params = [] ) : string | ||
| $Model | Model | The model to get a calculated field for. |
| $func | string | Lowercase name of SQL function, i.e. 'count' or 'max' |
| $params | array | Function parameters (any values must be quoted manually) |
| 리턴 | string | An SQL calculation function |
public function calculate(Model $Model, $func, $params = array())
{
$params = (array) $params;
switch (strtolower($func)) {
case 'count':
if (!isset($params[0])) {
$params[0] = '*';
}
if (!isset($params[1])) {
$params[1] = 'count';
}
if ($Model->isVirtualField($params[0])) {
$arg = $this->_quoteFields($Model->getVirtualField($params[0]));
} else {
$arg = $this->name($params[0]);
}
return 'COUNT(' . $arg . ') AS ' . $this->name($params[1]);
case 'max':
case 'min':
if (!isset($params[1])) {
$params[1] = $params[0];
}
if ($Model->isVirtualField($params[0])) {
$arg = $this->_quoteFields($Model->getVirtualField($params[0]));
} else {
$arg = $this->name($params[0]);
}
return strtoupper($func) . '(' . $arg . ') AS ' . $this->name($params[1]);
}
} /**
* test calculate to generate claculate statements on virtual fields
*
* @return void
*/
function testVirtualFieldsInCalculate()
{
$Article = ClassRegistry::init('Article');
$Article->virtualFields = array('this_moment' => 'NOW()', 'two' => '1 + 1', 'comment_count' => 'SELECT COUNT(*) FROM ' . $this->Dbo->fullTableName('comments') . ' WHERE Article.id = ' . $this->Dbo->fullTableName('comments') . '.article_id');
$result = $this->Dbo->calculate($Article, 'count', array('this_moment'));
$expected = 'COUNT(NOW()) AS `count`';
$this->assertEqual($expected, $result);
$result = $this->Dbo->calculate($Article, 'max', array('comment_count'));
$expected = 'MAX(SELECT COUNT(*) FROM comments WHERE `Article`.`id` = `comments`.`article_id`) AS `comment_count`';
$this->assertEqual($expected, $result);
}
