无法在CDbCriteria中进行内部联接

Question

这是mysqli查询

SELECT DISTINCT t.company_id,t.image,t.text,t.date, t.title AS c_title
FROM news t
INNER JOIN companies c ON c.company_id=t.company_id ORDER BY t.date DESC
LIMIT 20" or die ("ERROR ". mysqli_error($link));

我想写CDbCriteria

$Criteria = new CDbCriteria();
$Criteria->join = 'INNER JOIN companies c ON t.company_id=c.company_id';
if ($place>0){
    $Criteria->condition = "t.company_id = :place";
    $Criteria->params = array(':place'=>$place);
}
$Criteria->order = "t.date DESC";
$Criteria->limit = 20;
$Criteria->select='t.company_id,t.image,t.text,t.date,c.title AS c_title';
$dataProvider = new CActiveDataProvider('News',
    array(
        'criteria'=>$Criteria,
        'pagination'=>false
    )
);

错误属性＆＃34; News.c_title＆＃34;未定义

Answer 1

新闻模型中未定义属性c_title（新闻表中的字段将自动作为属性提供，但c_title是标题的别名，而不是表格的字段）。

将其放入您的新闻模型中：

public $c_title;