尝试使用 sql 数据提供程序在 Yii 2 中创建分页系统时出现问题

我正在尝试使用 Yii 2 实现分页系统并使用 SQL 数据提供程序，但出现以下错误：

Invalid argument supplied for foreach()

这是由sort类中的getOrders Yii方法中的line 215引起的;这是由下面的代码中的这个位引起的$models = $dataProvider->getModels();。

下面是通用代码：

$sql = $this->db->createCommand("SELECT COUNT(*) FROM some_table WHERE some_id=:some_id");
$sql->bindValue(':some_id', $this->some_id);
$count = $sql->queryScalar();
$dataProvider = new SqlDataProvider([
    'sql' => 'SELECT * FROM some_table WHERE some_id=:some_id',
    'params' => [':some_id' => $this->some_id],
    'totalCount' => $count,
    'sort' => [
        'attributes' => [
            'sort_way_1' => [
                'asc' => ['col_1' => SORT_DESC, 'col_2' => SORT_ASC, 'col_3' => SORT_ASC],
                'desc' => ['col_1' => SORT_DESC, 'col_2' => SORT_DESC, 'col_3' => SORT_DESC],
                'default' => SORT_DESC,
                'label' => 'Sort Way 1',
            ],
            'sort_way_2' => [
                'asc' => ['col_1' => SORT_DESC, 'col_4' => SORT_ASC, 'col_3' => SORT_ASC],
                'desc' => ['col_1' => SORT_DESC, 'col_4' => SORT_DESC, 'col_3' => SORT_DESC],
                'default' => SORT_DESC,
                'label' => 'Sort Way 2',
            ],
            'sort_way_3' => [
                'asc' => ['col_1' => SORT_DESC, 'col_5' => SORT_ASC, 'col_3' => SORT_ASC],
                'desc' => ['col_1' => SORT_DESC, 'col_5' => SORT_DESC, 'col_3' => SORT_DESC],
                'default' => SORT_DESC,
                'label' => 'Sort Way 3',
            ],
            'sort_way_4' => [
                'asc' => ['col_1' => SORT_DESC, 'col_6' => SORT_ASC, 'col_3' => SORT_ASC],
                'desc' => ['col_1' => SORT_DESC, 'col_6' => SORT_DESC, 'col_3' => SORT_DESC],
                'default' => SORT_DESC,
                'label' => 'Sort Way 4',
            ],
        ],
        'enableMultiSort' => false,
        'defaultOrder' => [
                           'col_1' => SORT_DESC,
                           'col_2' => SORT_DESC,
                           'col_3' => SORT_DESC,
                           ],
    ],
    'pagination' => [
        'pageSize' => $this->per_page,
        'page' => $this->page,
        'pageSizeLimit' => [5,100],
        'pageSizeParam' => 'per_page',
        'totalCount' => $count,
    ],
]);
$models = $dataProvider->getModels();

谁能告诉我我在这里做错了什么？