Php 哎。CActiveDataProvider与许多关系

我有两个模型：文档和报告。一个文档可以包含0个或多个报告。一个报表属于0或1个文档

class Document extends CActiveRecord {
    public function relations() {
        return array(
            'reports' => array(self::HAS_MANY, 'Report', 'document_id')
        );
    }
}

class Report extends CActiveRecord {
    public function relations() {
        return array(
            'document' => array(self::BELONGS_TO, 'Document', 'document_id')
        );
    }
}

字段文档id可以为空

我想使用CGridView小部件显示表。表中包含“文档名称”和“报告名称”列。如果文档没有报告，则只输入“文档名称”，并将“报告名称”保留为空。若文档有一个或多个报告，则为每个报告放置一行。例如：

+--------+-------------+
|Doc name| Report name |
+--------+-------------+
|doc1    |             |
|doc2    | report1     |
|doc3    | report2     |
|doc3    | report3     |
+--------+-------------+

当我尝试以这种方式创建CActiveDataProvider时：

$criteria = new CDbCriteria();
$criteria->with = [
    'reports' => [
       'together' => true,
]
$params = [
    'criteria' => $criteria,
];
$dataProvider = new CActiveDataProvider('Document', $params);

$criteria = new CDbCriteria();
$params = [
    'criteria' => $criteria,
];
$criteria->with = [
    'document' => [/*...*/],
]
$dataProvider = new CActiveDataProvider('Report', $params);

对于每个文档，我得到一行，即使文档有多个报告

如果我这样做：

$criteria = new CDbCriteria();
$criteria->with = [
    'reports' => [
       'together' => true,
]
$params = [
    'criteria' => $criteria,
];
$dataProvider = new CActiveDataProvider('Document', $params);

$criteria = new CDbCriteria();
$params = [
    'criteria' => $criteria,
];
$criteria->with = [
    'document' => [/*...*/],
]
$dataProvider = new CActiveDataProvider('Report', $params);

缺少包含0个报告的文档

---

如何执行此操作？

使用CSqlDataProvider而不是CActiveDataProvider解决。

使用CSqlDataProvider而不是CActiveDataProvider解决