Question

我在MongoDB中有json对象。我想为此对象添加值，例如在位置 - ＆gt;机器 - ＆gt;传感器。我知道机器的_id，位置和传感器。这样做最有效的方法是什么？

    array(
    "_id" => '547f2e4cb54b3a96203c9869',
    "name" => Array (
        "nl" => "klant1"
    ),
    "locations" => Array (
        Array (
            "_id" => "1",
            "name" => Array (
                "nl" => "location1",
            ),
            "machines" => Array (
                Array (
                    "_id" => "1",
                    "name" => Array (
                        "nl" => "boot1"
                    ),
                    "sensors" => Array (
                        Array (
                            "_id" => "1",
                            "log" => Array (
                            )
                        ),
                        Array (
                            "_id" => "2",
                            "log" => Array (
                            )
                        )
                    )
                ),
                Array (
                    "_id" => "2",
                    "name" => Array (
                        "nl" => "boot2"
                    ),
                    "sensors" => Array (
                        Array (
                            "_id" => "1",
                            "log" => Array (
                            )
                        ),
                        Array (
                            "_id" => "2",
                            "log" => Array (
                            )
                        )
                    )
                ), 
                Array (
                    "_id" => "3",
                    "name" => Array (
                        "nl" => "boot3"
                    ),
                    "sensors" => Array (
                        Array (
                            "_id" => "1",
                            "log" => Array (
                            )
                        ),
                        Array (
                            "_id" => "2",
                            "log" => Array (
                            )
                        )
                    )
                )
            )
        )
    )

Answer 1

超级简单。您可以拨打findAndModify电话。或者如果你想手动更多一点，你可以这样做：

$collection = $mongo->your_collection;
$obj = $collection->findOne($query);
$obj = $obj['locations']['machines']['sensors'][] = $new_sensor;
$collection->save($obj);

Mongo足够聪明，可以使用_id键识别对象，从而将这些存储视为对现有对象的更新。没有它，你就可以用它创建新的对象。

在MongoDB中为对象添加值

1 个答案: